[music-dsp] Roland AX-Synth
� do you folks know if the Roland AX-Synth has a real-time vocal pitch shift function like the Digitech Vocalist or the TC-Helicon VoiceTone?� i know that Korg and Roland and Novation had/have other synths with a vocoder of some sort in it.� i know that, back in the olden daze, Roland had a similar cheapie Voice Transformer. it's just that Imogen Heap is playing an AX and doing vocal shifting in this video: https://www.youtube.com/watch?v=Th0qY3d6oHA .� but there is nothing about this function in any of the descriptions of the AX-Synth.� the AX was meant to be totally portable and battery powered.� does that mean there is a remote box that can output MIDI from what she plays on the keyboard?� it appears she has some kinda transmitter taped to the bottom of her AX. i was just curious what she uses to do vocal pitch shifting and can't quite figure it out what it is. -- r b-j� � � � � � � � � � � � �r...@audioimagination.com "Imagination is more important than knowledge." � � � � ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
On Thu, 1 Nov 2018 at 16:24, Vadim Zavalishin < vadim.zavalis...@native-instruments.de> wrote: > On 31-Oct-18 18:19, Stefan Stenzel wrote: > > Vadim, > > > > I was more refering to the analog multimode filter based on the moog > cascade I did some years ago, and found it amusing to find a warning > against it. > > Ah, you mean the one at the beginning of Section 5.5? Well, that's an > artifact of the older revision 1, where the ladder filter was introduced > before the SVF (I still believe it's better didactically, unfortunately > new material dependencies made me switch the order). The modal mixtures > of the transistor ladder are asymmetric (HP is not symmetric to LP and > has the resonance peak kind of "in the middle of its slope" and BP is > not symmetric on its own). I felt that it might be confusing for a > beginner if their first encounter with resonating HP and BP is with this > kind of special-looking filters, hence the warning. With revision 2 this > warning becomes less important, since the 2-pole LP and BP were > discussed already before, but I still believe it's informative. After > all, it doesn't say that these filters are bad, it says that they are > special ;) > > If you prize symmetry then you can use a cascade with 2 x one pole HP and 2 x one pole LP to make a 4 pole BP (band pass) then you can use the same old FIR based output tap mixing to generate all the different responses. It may not be so easy to do in a real circuit, but in software we're not bound by what is easy to build :) https://cytomic.com/files/dsp/cascade-all-to-all-responses.pdf > > > Anyway, excellent writeup, > > Thank you! I'm glad my book is appreciated not only by newbies, but also > by the 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 > > Stefan: This sounds like the prefect excuse to get a HiDPI tablet to store and read all your PDFs, much lighter actual books and easier to search :) I've gone paper free now and write notes in PDF format and annotate directly on published papers in PDF format, which is great since it's easier to find things and it's all backed up. I lost a paper notebook and was always losing conference papers I printed out and annotated, which is quite frustrating. Digital has it's own challenges, but overall I'm happy with the move and love that everything is backed. Cheers, Andy ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Antialiased OSC
Well you definitely want a monotonic, equal-amplitude crossfade, and probably also time symmetry. So I think raised sinc is right out. In terms of finer design considerations it depends on the time scale. For longer crossfades (>100ms), steady-state considerations apply, and you can design for frequency domain characteristics. I.e., raised cosine, half of your favorite analysis window, etc. But for shorter crossfades (particularly 20ms and below), time domain considerations dominate and you want to minimize the max slope of the crossfade curve. So a linear crossfade is indicated here. Of course linear crossfade is also the cheapest option, so you really need a reason *not* to use it. Ethan (D) On Thu, Nov 1, 2018 at 12:18 PM robert bristow-johnson < r...@audioimagination.com> wrote: > > > Original Message > Subject: Re: [music-dsp] Antialiased OSC > From: "Sampo Syreeni" > Date: Wed, October 31, 2018 9:35 pm > To: philb...@mobileer.com > "A discussion list for music-related DSP" > Cc: "robert bristow-johnson" > -- > > > On 2018-08-06, Phil Burk wrote: > > > >> I crossfade between two adjacent wavetables. > > > > Yes. Now the question is, how to fade between them, optimally. > > > > I once again don't have any math to back this up, but intuition says the > > mixing function ought to be something like a sinc function or a raised > > cosine, at the lower rate. Because off the inherent bandlimit. And then > > the ability of such linear phase thingies to be turned into one-off > > interpolation thingies. > > > > Doing it at the lower rate, for the lower wavetable, would seem to be > > the easiest, while holding to band limitation. > > interpolating between samples of a wavetable and crossfading between > wavetables are different issues. > > if this wavetable synthesis is for the purpose of synthesizing a > bandlimited saw, square, triangle, PWM, sync saw, sync square, then you > adjacent wavetables going up and down the keyboard should be identical > except on will have more harmonics at the top set to zero. > > i think a linear crossfade, mixing only the two adjacent wavetables, is > the correct way to do it. > > > -- > > r b-j r...@audioimagination.com > > "Imagination is more important than knowledge." > > > > > > > > ___ > dupswapdrop: music-dsp mailing list > music-dsp@music.columbia.edu > https://lists.columbia.edu/mailman/listinfo/music-dsp ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Antialiased OSC
Original Message Subject: Re: [music-dsp] Antialiased OSC From: "Sampo Syreeni" Date: Wed, October 31, 2018 9:35 pm To: philb...@mobileer.com "A discussion list for music-related DSP" Cc: "robert bristow-johnson" -- > On 2018-08-06, Phil Burk wrote: > >> I crossfade between two adjacent wavetables. > > Yes. Now the question is, how to fade between them, optimally. > > I once again don't have any math to back this up, but intuition says the > mixing function ought to be something like a sinc function or a raised > cosine, at the lower rate. Because off the inherent bandlimit. And then > the ability of such linear phase thingies to be turned into one-off > interpolation thingies. > > Doing it at the lower rate, for the lower wavetable, would seem to be > the easiest, while holding to band limitation. interpolating between samples of a wavetable and crossfading between wavetables are different issues. if this wavetable synthesis is for the purpose of synthesizing a bandlimited saw, square, triangle, PWM, sync saw, sync square, then you adjacent wavetables going up and down the keyboard should be identical except on will have more harmonics at the top set to zero. i think a linear crossfade, mixing only the two adjacent wavetables, is the correct way to do it. -- r b-j� � � � � � � � � � � � �r...@audioimagination.com "Imagination is more important than knowledge." � � � � ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
5 copies works out at £25 each :) On 2018-11-01 17:18, pa...@synth.net wrote: FWIW, I found somewhere you can get printed copies of PDFs bound in a hardback for £40 + postage :) Paula On 2018-11-01 16:09, pa...@synth.net wrote: You could also do a kickstarter, like the push turn move and patch books? Or just self publish, where they print say 5 books and sell them, when they drop below 2 they print a few more. Just some random thoughts, but I will probably find somewhere I can get it printed/bound :) Paula On 2018-11-01 15:04, Vadim Zavalishin wrote: On 01-Nov-18 15:18, pa...@synth.net wrote: Hmmm, 500 A4 pages would be rather heavy ;) I'd willingly pay for a copy. Quite pleased to hear that, thank you ;) Still, you could ask a copy shop to print and bind a copy for yourself (the book license allows it). I have been considering 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 ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
FWIW, I found somewhere you can get printed copies of PDFs bound in a hardback for £40 + postage :) Paula On 2018-11-01 16:09, pa...@synth.net wrote: You could also do a kickstarter, like the push turn move and patch books? Or just self publish, where they print say 5 books and sell them, when they drop below 2 they print a few more. Just some random thoughts, but I will probably find somewhere I can get it printed/bound :) Paula On 2018-11-01 15:04, Vadim Zavalishin wrote: On 01-Nov-18 15:18, pa...@synth.net wrote: Hmmm, 500 A4 pages would be rather heavy ;) I'd willingly pay for a copy. Quite pleased to hear that, thank you ;) Still, you could ask a copy shop to print and bind a copy for yourself (the book license allows it). I have been considering 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 ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
This looks like an amazing resource -- I hadn't seen it before. Thanks for sharing your knowledge! bjorn On Wed, Oct 31, 2018 at 6:20 AM Vadim Zavalishin < vadim.zavalis...@native-instruments.de> wrote: > 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 > 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/mailman/listinfo/music-dsp > > -- - Bjorn Roche bjornroche.com @bjornroche ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
You could also do a kickstarter, like the push turn move and patch books? Or just self publish, where they print say 5 books and sell them, when they drop below 2 they print a few more. Just some random thoughts, but I will probably find somewhere I can get it printed/bound :) Paula On 2018-11-01 15:04, Vadim Zavalishin wrote: On 01-Nov-18 15:18, pa...@synth.net wrote: Hmmm, 500 A4 pages would be rather heavy ;) I'd willingly pay for a copy. Quite pleased to hear that, thank you ;) Still, you could ask a copy shop to print and bind a copy for yourself (the book license allows it). I have been considering 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 ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
[music-dsp] Making Sense of Sounds Data Challenge: Deadline extended to 5 Nov 2018
Dear Music DSP people, Following a number of requests during this busy period, the submission deadline for the "Making Sense of Sounds" (MSoS) Data Challenge has been extended: ** Submission deadline (Extended): 5 November 2018 ** For more information about the challenge and how to submit, see: http://cvssp.org/projects/making_sense_of_sounds/site/challenge/ Important dates: * Submission deadline: ** 5 Nov 2018 (Extended) ** * Results announced: 19/20 Nov 2018 (at DCASE 2018 Workshop) The MSoS Challenge is jointly organized by University of Salford and University of Surrey. Contact: msos.challe...@gmail.com We look forward to your submission! Mark Plumbley On behalf of the MSoS Challenge organisers -- Prof Mark D Plumbley Professor of Signal Processing Centre for Vision, Speech and Signal Processing (CVSSP) University of Surrey, Guildford, Surrey, GU2 7XH, UK Email: m.plumb...@surrey.ac.uk === DCASE 2018 Workshop on Detection and Classification of Acoustic Scenes and Events 19 - 20 November 2018, Surrey, UK http://dcase.community/workshop2018/ === ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
Hi Vadim, This is a really valuable resource for many of us. > On 1 Nov 2018, at 16:04, Vadim Zavalishin > wrote: > > I have been considering 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. I appreciate that but it would still be nice if your book could be cited appropriately. Have you thought about putting it on arxiv or zenodo.org? This would give you the possibility to version the book and make folks from academia happy with a proper DOI reference. Best Fabian — Fabian-Robert Stöter INRIA and LIRMM Campus Saint-Priest - Bâtiment 5 860 rue de St Priest 34392 Montpellier Cedex 5 France https://faroit.com ---___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
On 01-Nov-18 15:18, pa...@synth.net wrote: Hmmm, 500 A4 pages would be rather heavy ;) I'd willingly pay for a copy. Quite pleased to hear that, thank you ;) Still, you could ask a copy shop to print and bind a copy for yourself (the book license allows it). I have been considering 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-instruments.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
Hmmm, 500 A4 pages would be rather heavy ;) I'd willingly pay for a copy. Consider how thick books like "The art of electronics" by Horowitz and Hill is? (just over 1100 pages). It's well worth its size and weight (quite literally) :) Paula ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
Re: [music-dsp] Book: The Art of VA Filter Design 2.1.0
On 31-Oct-18 18:19, Stefan Stenzel wrote: Vadim, I was more refering to the analog multimode filter based on the moog cascade I did some years ago, and found it amusing to find a warning against it. Ah, you mean the one at the beginning of Section 5.5? Well, that's an artifact of the older revision 1, where the ladder filter was introduced before the SVF (I still believe it's better didactically, unfortunately new material dependencies made me switch the order). The modal mixtures of the transistor ladder are asymmetric (HP is not symmetric to LP and has the resonance peak kind of "in the middle of its slope" and BP is not symmetric on its own). I felt that it might be confusing for a beginner if their first encounter with resonating HP and BP is with this kind of special-looking filters, hence the warning. With revision 2 this warning becomes less important, since the 2-pole LP and BP were discussed already before, but I still believe it's informative. After all, it doesn't say that these filters are bad, it says that they are special ;) Anyway, excellent writeup, Thank you! I'm glad my book is appreciated not only by newbies, but also by the 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-instruments.com ___ dupswapdrop: music-dsp mailing list music-dsp@music.columbia.edu https://lists.columbia.edu/mailman/listinfo/music-dsp
