Re: [music-dsp] Trapezoidal and other integration methods applied tomusical resonant filters

2011-05-16 Thread Vadim Zavalishin
an additional 1 division, 1 add, 1 mult, and 1 tan approximation: http://dl.dropbox.com/u/14219031/Chat/TrapezoidalSvfResponses.pdf Andy -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin

Re: [music-dsp] Trapezoidal and other integration methodsappliedtomusical resonant filters

2011-05-17 Thread Vadim Zavalishin
-pole components of the moog vcf IIRC, but that's less critical, although does change matters to an extent). Regards Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http

Re: [music-dsp] Trapezoidal and other integration methods applied tomusical resonant filters

2011-05-17 Thread Vadim Zavalishin
intuitively, this could affect the time-variant stability a little bit more)? If the stability is of larger concern, OTOH, maybe the BLT integrators should be used exactly as they are: cutoff_gain-FIR-IIR Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30

Re: [music-dsp] Trapezoidal and other integrationmethodsappliedtomusical resonant filters

2011-05-17 Thread Vadim Zavalishin
. I'm not sure how critical the difference would be, one needs a really sensitive musical ear to judge that. Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http

Re: [music-dsp] Trapezoidal and other integration methods applied tomusical resonant filters

2011-05-18 Thread Vadim Zavalishin
integrator. You can also do the same using backward- or forward-difference integrators if you wish, although there is probably not much point in that. Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische

Re: [music-dsp] Trapezoidal and otherintegrationmethodsappliedtomusical resonant filters

2011-05-18 Thread Vadim Zavalishin
-- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http://www.native-instruments.com Registergericht: Amtsgericht Charlottenburg Registernummer: HRB 72458 UST.-ID.-Nr. DE 20 374 7747

Re: [music-dsp] Trapezoidal and otherintegrationmethodsappliedtomusical resonant filters

2011-05-18 Thread Vadim Zavalishin
is the HP numerator while cutoff^2 is the LP numerator. Consider the limit of H(s) when s-inf or s-0. Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http://www.native

Re: [music-dsp] Trapezoidal and otherintegrationmethodsappliedtomusical resonant filters

2011-05-18 Thread Vadim Zavalishin
)/(g^2+g*k*s+s^2) :-) I'm not sure about your peak filter. How did you build it? I would think peak = 1 + boost*k*bandpass (boost = -1) Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28

Re: [music-dsp] Trapezoidal and otherintegrationmethodsappliedtomusical resonant filters

2011-05-18 Thread Vadim Zavalishin
a continuous-time counterpart of the familiar DF2 (canonical) filter structure. Just try replacing unit delays with integrators in the DF2. As such, in principle, it can be generalized to arbitrary-order multimode filter, capable of realizing any s-domain transfer function. Regards, Vadim -- Vadim

Re: [music-dsp] Trapezoidal and other integration methodsappliedtomusical resonant filters

2011-05-23 Thread Vadim Zavalishin
to the details of the filter response. Many people would be fully happy with the Chamberlin SVF as it is. Also, BLT filters require division (once the parameters change), which was quite expensive, especially those days, I think. Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel

Re: [music-dsp] Trapezoidal and other integrationmethodsappliedtomusical resonant filters

2011-05-23 Thread Vadim Zavalishin
the sound to an extent. When comparing the models, one also shouldn't forget the time-variant (modulated parameters) behavior of the structures (which I guess is the primary reason to use SVF instead of DF), but this is much more difficult to theoretically analyse. Regards, Vadim -- Vadim

Re: [music-dsp] Trapezoidal andotherintegrationmethodsappliedtomusical resonant filters

2011-05-23 Thread Vadim Zavalishin
. Regards, Vadim -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 28 10997 Berlin, Germany http://www.native-instruments.com Registergericht: Amtsgericht Charlottenburg Registernummer: HRB 72458 UST.-ID.-Nr. DE

Re: [music-dsp] Noise performance of f32 iir filters

2011-09-27 Thread Vadim Zavalishin
, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp -- Vadim Zavalishin Senior Software Developer | RD Tel +49-30-611035-0 Fax +49-30-611035-2600 NATIVE INSTRUMENTS GmbH Schlesische Str. 29-30 10997 Berlin, Germany

[music-dsp] ANN: Book: The Art of VA Filter Design

2012-05-25 Thread Vadim Zavalishin
/downloads/pdf/VAFilterDesign.pdf http://www.discodsp.net/VAFilterDesign.pdf (thanks to george for mirroring) There is a discussion thread at http://www.kvraudio.com/forum/viewtopic.php?t=350246 Regards, Vadim -- Vadim Zavalishin Software Integration Architect | RD Tel +49-30-611035-0 Fax +49-30

Re: [music-dsp] IIR Coefficient Switching Issues

2013-11-04 Thread Vadim Zavalishin
-- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http

Re: [music-dsp] IIR Coefficient Switching Issues

2013-11-04 Thread Vadim Zavalishin
) On 04-Nov-13 11:07, Vadim Zavalishin wrote: Hi Chris Direct forms are not good for coefficient modulation, plus IIRC they tend to have precision issues at low cutoffs. I guess, the TPT (ZDF) approach can solve your problem completely: http://www.native-instruments.com/fileadmin/ni_media/downloads/pdf

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-08 Thread Vadim Zavalishin
On 08-Nov-13 12:13, Urs Heckmann wrote: No offense meant, I wasn't aware that your book was considered a standard dsp lecture. If you know of any university that uses it in their curriculum, please let me know and I'll recommend that university. Damn, you got me there ;-) -- Vadim Zavalishin

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
there (although I don't have a rigorous proof). Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book

Re: [music-dsp] Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
suspicious is that your coordinate transformation matrix is built for the smallest damping, while the more problematic case seems to occur at the larger damping. But, as I said, I didn't finish that research and I could have been wrong. So just take my input FWIW. Regards, Vadim -- Vadim Zavalishin

Re: [music-dsp] R: Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
-- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
design. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http

Re: [music-dsp] Time Varying BIBO Stability Analysis of Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
at the first thought. It's just contradicting the *unverified* results of my earlier research, that's why I expressed my suspiciousness. Hopefully, I'll find time to check your research in more detail. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-11 Thread Vadim Zavalishin
loops, the filters were called delay-free feedback filters or zero delay feedback filters (which was further shortened to zdf filters or 0df filters). Then someone thought that 0df stands for zero-delay filter rather than zero-delay feedback and there you are :D Regards, Vadim -- Vadim Zavalishin

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-12 Thread Vadim Zavalishin
some source which caused him to remark single precision? What is this? 1980?. One word: SIMD Regards, Vadim PS. Time-varying performance is another word. Nonlinearities is the third one. -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-12 Thread Vadim Zavalishin
of properly hosting the nonlinearities present in the original analog prototype. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-12 Thread Vadim Zavalishin
channels with SSE if you use doubles. If 2 channels are sufficient for you, then you might not care, of course. -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-12 Thread Vadim Zavalishin
. YMMV ;-) -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu

Re: [music-dsp] Trapezoidal integrated optimised SVF v2

2013-11-12 Thread Vadim Zavalishin
, switching from float to double halves the number of available SIMD channels, which means you need to run your code twice as many times. On the other hand, in my experience, most of the DSP algorithms are quite tolerant to using 32-bit floats (DF filters being one exception). -- Vadim Zavalishin

Re: [music-dsp] Frequency bounded DSP

2014-01-03 Thread Vadim Zavalishin
:09, Wen Xue wrote: Why not just inverse-transform any band-limited spectrum? (or have I got the question wrong?) Now, can we do better, can we make, say, some form of other envelope that is still frequency limited ? T.V. -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-06-30 Thread Vadim Zavalishin
ADC. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-01 Thread Vadim Zavalishin
integration in the construction of the Taylor series, which is somewhat bothering). However, it would still be interesting to get a consistent look at the same problem from the virtual ADC point of view, if only for the sake of understanding. Regards, Vadim -- Vadim Zavalishin Reaktor

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-01 Thread Vadim Zavalishin
On 01-Jul-14 10:17, Vadim Zavalishin wrote: This addresses my original motivation to a large extent: applying BLXX not only to waveforms of stable frequencies, but also to their modulated versions. Although, not completely. Particularly, self-FM sawtooth produces an exponential signal. I wonder

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-01 Thread Vadim Zavalishin
terms. For a non-symmetrical window you just get another DC term from the convolution with the second term of the sum. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-02 Thread Vadim Zavalishin
the wavetables, BLIT, etc, they might provide superior performance (wavetables), total absence of inharmonic aliasing (BLIT) etc., but, AFAIK they tend to fail in extreme situations like heavy audio-rate FM, ring modulation etc. BLEP, OTOH, should still perform equally good. Regards, Vadim -- Vadim

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-02 Thread Vadim Zavalishin
, whether we are getting a bandlimited signal in the limit). Maybe if a is small enough, the derivative discontinuities will decay sufficiently fast for that? Oh, and could you also give the link to the other thread you mentioned? Thanks Vadim -- Vadim Zavalishin Reaktor Application Architect

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-02 Thread Vadim Zavalishin
(2*pi*f*t) is bandlimited iff f1/2T a=2*pi*f a*Tpi iff 2*pi*f*Tpi iff 2*f*Tpi iff f1/2T Thus, it seems exp(a*t) is bandlimited exactly under the same condition. -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-03 Thread Vadim Zavalishin
On 03-Jul-14 08:00, Nigel Redmon wrote: On Jul 2, 2014, at 1:12 AM, Vadim Zavalishin vadim.zavalis...@native-instruments.de wrote: As for using the wavetables, BLIT, etc, they might provide superior performance (wavetables), total absence of inharmonic aliasing (BLIT) etc., but, AFAIK they tend

Re: [music-dsp] On the theoretical foundations of BLEP, BLAMP etc

2014-07-03 Thread Vadim Zavalishin
). Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http

[music-dsp] Instant frequency recognition

2014-07-10 Thread Vadim Zavalishin
and use some other (yet undeveloped) approach for the short-time frequency detection. Any further thoughts? Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website

Re: [music-dsp] Instant frequency recognition

2014-07-16 Thread Vadim Zavalishin
On Thu, Jul 10, 2014 at 4:02 PM, Vadim Zavalishin vadim.zavalis...@native-instruments.de wrote: Hi all, a recent question to the list regarding the frequency analysis and my recent posts concerning the BLEP led me to an idea, concerning the theoretical possibility of instant recognition

Re: [music-dsp] Instant frequency recognition

2014-07-17 Thread Vadim Zavalishin
of sines of different frequencies? Each sine corresponding to 3 degrees of freedom. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info

Re: [music-dsp] Instant frequency recognition

2014-08-01 Thread Vadim Zavalishin
analysis sense. This must be a dual of Laplace transform of a bandlimited signal being analytic (entire). Although I could be missing something here. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop

Re: [music-dsp] Instant frequency recognition

2014-08-01 Thread Vadim Zavalishin
Sorry, I meant Laplace transform of a timelimited signal. On 01-Aug-14 10:06, Vadim Zavalishin wrote: On 01-Aug-14 05:22, colonel_h...@yahoo.com wrote: On Fri, 18 Jul 2014, Sampo Syreeni wrote: Well, theoretically, all you have to know is that the signal is bandlimited. When

Re: [music-dsp] Instant frequency recognition

2014-08-04 Thread Vadim Zavalishin
there.) Ron -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc

Re: [music-dsp] Efficiently modulate filter coefficients without artifacts?

2015-02-04 Thread Vadim Zavalishin
at any finite time. but if there is vibrato connected to a filter's control parameters, i can see how a filter can go unstable an never settle down. This is exactly the point of the time-varying stability analysis. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments

Re: [music-dsp] Efficiently modulate filter coefficients without artifacts?

2015-02-02 Thread Vadim Zavalishin
links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ

Re: [music-dsp] Efficiently modulate filter coefficients without artifacts?

2015-02-03 Thread Vadim Zavalishin
with nonzero initial conditions than with zero initial conditions. I took a glance at the proof and it doesn't look very convincing. If there's interest, we could further discuss the details. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0

Re: [music-dsp] Efficiently modulate filter coefficients without artifacts?

2015-02-04 Thread Vadim Zavalishin
that such structures have the best time-varying performance in cases of cutoff modulation. Although, whether this is equivalent to the choice of the energy-based state variables in real-world physics systems is not fully clear to me yet. Regards, Vadim -- Vadim Zavalishin Reaktor Application

Re: [music-dsp] Efficiently modulate filter coefficients without artifacts?

2015-02-04 Thread Vadim Zavalishin
variables of the mass-spring system will be equivalent to the state variables of the SVF, which would then be a sign that your idea might be correct. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com

Re: [music-dsp] SVF and SKF with input mixing

2015-01-06 Thread Vadim Zavalishin
, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website

[music-dsp] Sampling theorem extension

2015-06-09 Thread Vadim Zavalishin
where I was asking the same question: http://music.columbia.edu/pipermail/music-dsp/2014-June/072679.html -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription

Re: [music-dsp] Did anybody here think about signal integrity

2015-06-08 Thread Vadim Zavalishin
for these signals. -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp -- Vadim Zavalishin Reaktor Application

Re: [music-dsp] Did anybody here think about signal integrity

2015-06-08 Thread Vadim Zavalishin
, I guess, creating a new thread could be an appropriate way to go. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source

Re: [music-dsp] Sampling theorem extension

2015-06-10 Thread Vadim Zavalishin
small time region? I am specifically interested in the functions on the entire real axis. Further in my original email there is an explanation of the reasons. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com

Re: [music-dsp] Sampling theorem extension

2015-06-10 Thread Vadim Zavalishin
] and see what you get. it ain't BIBO. Interesting observation. I might need to think a little bit more about this :) However I'm not sure how this is related to the convergence of the BLEPs in the context which we are talking about. Regards, Vadim -- Vadim Zavalishin Reaktor Application

Re: [music-dsp] Sampling theorem extension

2015-06-22 Thread Vadim Zavalishin
' exists (BLEPs converge), then y'=BL[y] If the BLEP convergence is only given within some interval of the time axis (don't know if such cases can exist), then we can speak of signals bandlimited on an interval. -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49

Re: [music-dsp] The Art of VA Filter Design book revision 1.1.0

2015-06-22 Thread Vadim Zavalishin
and n(N+1)/2 for N odd. I plan to release a bugfix update, but want to wait for possibly more bugs being discovered. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list

Re: [music-dsp] Sampling theorem extension

2015-06-24 Thread Vadim Zavalishin
for the convergence of the BLEPs. So, there seems to be a strong correspondence between the convergence of the BLEPs and the bandlimitedness of the base signal. -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com

Re: [music-dsp] Sampling theorem extension

2015-06-23 Thread Vadim Zavalishin
On 22-Jun-15 21:59, Sampo Syreeni wrote: On 2015-06-22, Vadim Zavalishin wrote: After some googling I rediscovered (I think I already found out it one year ago and forgot) the Paley-Wiener-Schwartz theorem for tempered distributions, which is closely related to what I was aiming at. It'll

Re: [music-dsp] Sampling theorem extension

2015-06-11 Thread Vadim Zavalishin
, based on the derivative rolloff speed, was that it's bandlimited if a is below the Nyquist). Could you tell us how does its spectrum look like? Thanks, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop

Re: [music-dsp] Sampling theorem extension

2015-06-12 Thread Vadim Zavalishin
of the Taylor series terms (derivative rolloff). Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list

Re: [music-dsp] Sampling theorem extension

2015-06-12 Thread Vadim Zavalishin
in the above? Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http

Re: [music-dsp] Sampling theorem extension

2015-06-11 Thread Vadim Zavalishin
function being bandlimited and for the BLEP sum to converge is one and the same and has to do with the rolloff speed of the function's derivatives as the derivative order increases. -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native

Re: [music-dsp] Sampling theorem extension

2015-07-07 Thread Vadim Zavalishin
On 06-Jul-15 04:03, Sampo Syreeni wrote: On 2015-06-30, Vadim Zavalishin wrote: I would say the whole thread has been started mostly because of the exponential segments. How are they out of the picture? They are for *now* out, because I don't yet see how they could be bandlimited

Re: [music-dsp] The Art of VA Filter Design book revision 1.1.0

2015-08-10 Thread Vadim Zavalishin
impressions. i hope you don't mind the review (that was not explicitly asked for). Would be highly appreciated. And thanks for the comments which you already made. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native

[music-dsp] List settings after the switch

2015-08-10 Thread Vadim Zavalishin
, trying it now (I wonder why does it work for other people, who manage to write to the list?) Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ music-dsp

Re: [music-dsp] List settings after the switch

2015-08-10 Thread Vadim Zavalishin
, the new list page is not pointing to the old archives. Regards, Vadim On 10-Aug-15 10:46, Vadim Zavalishin wrote: Hi Douglas and all, it seems that after the switching of the list server there are a few issues, which I just noticed: - the reply-to field in the list mails is configured

Re: [music-dsp] The Art of VA Filter Design book revision 1.1.0

2015-07-24 Thread Vadim Zavalishin
Released the promised bugfix http://www.native-instruments.com/fileadmin/ni_media/downloads/pdf/VAFilterDesign_1.1.1.pdf On 22-Jun-15 10:51, Vadim Zavalishin wrote: Didn't realize I was answering a personal rather than a list email, so I'm forwarding here the piece of information which

Re: [music-dsp] Sampling theorem extension

2015-07-13 Thread Vadim Zavalishin
a solid proof for that yet, but it looks pretty easy. How about the equation u''=-w*u+g where v is sinc and w is above the sampling frequency? -- Vadim Zavalishin Reaktor Application Architect | RD Native Instruments GmbH +49-30-611035-0 www.native-instruments.com -- dupswapdrop -- the music-dsp

Re: [music-dsp] how to derive spectrum of random sample-and-hold noise?

2015-11-06 Thread Vadim Zavalishin
e. w[n] = x[n] - x[n-1]). Either way, any hints would be appreciated. Thanks in advance, Ross. -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupswapdrop: music-dsp mailin

Re: [music-dsp] how to derive spectrum of random sample-and-hold noise?

2015-11-06 Thread Vadim Zavalishin
On 06-Nov-15 11:03, Vadim Zavalishin wrote: Apologies if this question has already been answered, I didn't read the entire thread, just wanted to share the following idea off the top of my head FWIW. Oops, nevermind, I didn't realize that the SnH period is also random in the original question

Re: [music-dsp] how to derive spectrum of random sample-and-hold noise?

2015-11-06 Thread Vadim Zavalishin
distributed according to your specs. The distribution of box lengths must be IIRC one of the commonly known distributions, don't remember which one. On 06-Nov-15 11:06, Vadim Zavalishin wrote: On 06-Nov-15 11:03, Vadim Zavalishin wrote: Apologies if this question has already been answered, I didn't

Re: [music-dsp] Delays: sampling rate modulation vs. buffer size modulation

2016-03-23 Thread Vadim Zavalishin
) this can be solved only numerically. For a predefined v(t) this can be done analytically. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupswapdrop: music-dsp

Re: [music-dsp] ± 45° Hilbert transformer using pair of IIR APFs

2017-02-06 Thread Vadim Zavalishin
Funny that no one mentioned this https://www.native-instruments.com/fileadmin/ni_media/downloads/pdf/VAFilterDesign_1.1.1.pdf Particularly, formula 7.43 Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com

[music-dsp] Book: The Art of VA Filter Design 2.0.0alpha

2018-06-11 Thread Vadim Zavalishin
of the material had only surface checking and to an extent is a bit of a "work in progress". Best regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupsw

Re: [music-dsp] Book: The Art of VA Filter Design 2.0.0alpha

2018-06-21 Thread Vadim Zavalishin
, although, on the other hand, changing the title, under which the book is already known, might be not necessarily the best thing to do. I'll give it a thought though, thanks! Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native

Re: [music-dsp] Elliptic filters coefficients

2018-02-02 Thread Vadim Zavalishin
design? Thanks to you too, Shannon. Best, Dario On 1 February 2018 at 11:16, Vadim Zavalishin <vadim.zavalis...@native-instruments.de <mailto:vadim.zavalis...@native-instruments.de>> wrote: Hmm, the Wikipedia article on elliptic filters has a formula to calculate the poles

Re: [music-dsp] What is resonance?

2018-07-23 Thread Vadim Zavalishin
have lots of freedom in the implementation structure. You could look into the latest revision of my book for more details (where I also explain the problems with the lowpass feedback). Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0

Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-11-01 Thread Vadim Zavalishin
selling this book for money, but so far I don't really want to do that. One of the reasons, it'd be prohibitively difficult to release small updates such as this one. Best regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native

Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-10-31 Thread Vadim Zavalishin
chance aware of this structure being discussed elsewhere? Haven't encountered anything like that so far (not that it's difficult to derive ;) ), just wanted to build a nonlinear 2nd kind Butterworth filter of 4th order, so needed something like that ;) Best regards, Vadim -- Vadim Zavalishin

Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-11-01 Thread Vadim Zavalishin
e industry experts. I wish I cuold have it printed as a proper book for more relaxed reading. Hmmm, 500 A4 pages would be rather heavy ;) Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instr

[music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-10-31 Thread Vadim Zavalishin
Announcing a small update to the book https://www.native-instruments.com/fileadmin/ni_media/downloads/pdf/VAFilterDesign_2.1.0.pdf New additions: - Generalized ladder filters - Elliptic filters of order 2^N - Steepness estimation of elliptic shelving filters Regards, Vadim -- Vadim Zavalishin

Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-11-02 Thread Vadim Zavalishin
raudio.com/forum/viewtopic.php?p=6844470#p6844470 Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia

Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0

2018-11-02 Thread Vadim Zavalishin
from academia happy with a proper DOI reference. Nobody complained so far, but I will consider your suggestion, thank you! Best regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instrumen

Re: [music-dsp] zero delay feedback for phase modulation synthesis?

2018-11-16 Thread Vadim Zavalishin
music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.co

Re: [music-dsp] variations on exponential curves

2018-10-01 Thread Vadim Zavalishin
On 01-Oct-18 14:12, Vadim Zavalishin wrote: In principle IIRC the same rule applies for multiplier < 1, but there the losses are not too large. This also manifests at multiplier = 1 by having the "best offset" so that the curve's middle is at zero. Sorry, I

Re: [music-dsp] variations on exponential curves

2018-10-01 Thread Vadim Zavalishin
position is zero (which means that that the "output" value is current + offset). In principle IIRC the same rule applies for multiplier < 1, but there the losses are not too large. This also manifests at multiplier = 1 by having the "best offset" so that the curve's middle

Re: [music-dsp] variations on exponential curves

2018-10-01 Thread Vadim Zavalishin
will not fully converge. Regards, Vadim -- Vadim Zavalishin Reaktor Application Architect Native Instruments GmbH +49-30-611035-0 www.native-instruments.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu

Re: [music-dsp] The art of VA filter design - video

2018-11-28 Thread Vadim Zavalishin
On 28-Nov-18 11:07, Jean-Baptiste Thiebaut wrote: I'm proud to share this video of Vadim Zavalishin, who came to ADC in London last week to share his DSP knowledge. I came across Vadim's work on this list and invited him to ADC a few months ago, and thought I'd share this with you. (I hope