Re: [music-dsp] Roland AX-Synth

[Roshan Wijetunge]

Looks like she's using something like this to send midi to another bit of
kit

https://www.thomann.de/gb/panda_audio_midibeam.htm

Tosh

---

Roshan ‘Tosh’ Wijetunge

Musician / Producer / Engineer

www.wijproductions.com
rwi...@googlemail.com :: +44 (0) 7787 783 783 :: @wijproductions




On Fri, 2 Nov 2018 at 04:41, robert bristow-johnson <
r...@audioimagination.com> wrote:

>
>
> 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
___
dupswapdrop: music-dsp mailing list
music-dsp@music.columbia.edu
https://lists.columbia.edu/mailman/listinfo/music-dsp

Re: [music-dsp] advice regarding USB oscilloscope

[Roshan Wijetunge]

Depending on how cheap and improvised you want to go, and how handy you are
with basic electronics, you can easily adapt your soundcard to work as an
oscilloscope. There are a number of guides on the internet on how to do
this, such as:

http://makezine.com/projects/sound-card-oscilloscope/

I have used the following variation with good results:

- Probe via resistor to mic input of mixer
- Mixer line out to line of USB soundcard
- Schwa Schope  plugin
running in any DAW host (e.g. Reaper)

I used this setup as it utilised components I already had available, and it
has proved very useful for debugging audio hardware, being able to trace
signals through a circuit as well as biasing amplifier stages in pre-amps.
Using the mixer gave me control over input signal range though clearly you
have to be careful with gain staging so as not to introduce distortion to
the signal.

I also improvised a signal generator using a Electro Harmonix Tube Zipper
guitar effects pedal. It's an auto-wah type pedal, but you can set the
resonance to maximum, sensitivity to zero and it generates a nice clean
stable sine wave.

Best Regards
Roshan



On 8 March 2017 at 09:57, Andrew Simper  wrote:

> Picoscope make the cheapest 16-bit scopes around (USD 1000), the
> 16-bit stuff from Tektronix is a lot more expensive (USD 31000 -
> that's right I didn't accidentally add an extra zero, it's x30 the
> price). I would recommend using the Picoscope and use Python's easy c
> bindings to call the Picoscope library functions to do what you want.
>
> Cheers,
>
> Andy
>
> On 7 March 2017 at 22:59, Remy Muller  wrote:
> > Hi,
> >
> > I'd like to invest into an USB oscilloscope.
> >
> > The main purpose is in analog data acquisition and instrumentation. Since
> > the main purpose is audio, bandwidth is not really an issue, most models
> > seem to provide 20MHz or much more and I'm mostly interested in analog
> > inputs, not logical ones.
> >
> > Ideally I'd like to have
> >
> >  - Mac, Windows and Linux support
> >
> > - 4 channels or more
> >
> > - 16-bit ADC
> >
> > - up to 20V
> >
> > - general purpose output generator*
> >
> > - a scripting API (python preferred)
> >
> > * I have been told that most oscilloscopes have either no or limited
> output,
> > and that I'd rather use a soundcard for generating dedicated test audio
> > signals, synchronizing the oscilloscope acquisition using the soundcard's
> > word-clock. However not having to deal with multiple drivers and clock
> > synchronization would be more than welcome.
> >
> > A friend of mine recommended using Picoscope which seems well supported,
> has
> > a strong user community but no official support for python AFAIK.
> >
> > https://www.picotech.com/oscilloscope/5000/flexible-
> resolution-oscilloscope
> >
> > I also found about bitscope http://www.bitscope.com which looks more
> > oriented toward the casual hacker/maker, seems more open-ended and has
> > python support, much cheaper too.
> >
> > What about the traditional oscilloscope companies like Tektronix, Rigol ?
> >
> > Has anyone experience with any of those? or any other reference to
> > recommend?
> >
> >
> > ___
> > 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] audio dsp career advice

[Roshan Wijetunge]

Thanks Martin, I've actually done the ASPMA course, it's a really good
treatment of the fundamentals of spectral processing, the DSP one looks
like my next port of call.

Roshan

On 7 February 2017 at 17:05, Martin Klang <m...@pingdynasty.com> wrote:

>
> This course is great, it will give you a really solid, ground up DSP
> foundation:
>
> https://www.coursera.org/learn/dsp
>
>
> This one is also very good if you don't mind learning (or already know)
> Python:
>
> https://www.coursera.org/learn/audio-signal-processing
>
>
> Martin
>
> On 07/02/17 15:10, Roshan Wijetunge wrote:
>
> Hi everyone,
>
> Firstly, thank you all for the stimulating discussion on this forum. I
> have a career advice question for which I would value your input.
>
> My background is mechanical engineering (my PhD was in modelling and
> control of engines), I've  freelanced for years simulating dynamic systems
> and figuring out ways to control them. I've also maintained a parallel
> career as a professional musician and producer, with a lot of experience
> recording, mixing  and mastering. My holy grail is to bring the 2 strands
> together into a single career which is why I've taken an active interest in
> audio signal processing, software and hardware design.
>
> My questions are:
>
> - Can you recommend any courses / resources for filling in my knowledge
> gap. I can just about follow most of what gets discussed here though my
> practical experience of most techniques is minimal.
>
> - What are the essential areas of knowledge required to follow a career in
> audio signal processing, what route did you take (self taught / MSc / PhD,
> on the job learning?)
>
> - What are the job opportunities like (and where) and what are the biggest
> growth areas in the field?
>
> Apologies if this is a little off-topic, but I greatly appreciate any
> advice you can offer.
>
> With best regards
>
> Roshan 'Tosh' Wijetunge
>
> www.wijproductions.com
> www.wijet.co.uk
>
>
>
>
>
> ___
> dupswapdrop: music-dsp mailing 
> listmusic-dsp@music.columbia.eduhttps://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

[music-dsp] audio dsp career advice

[Roshan Wijetunge]

Hi everyone,

Firstly, thank you all for the stimulating discussion on this forum. I have
a career advice question for which I would value your input.

My background is mechanical engineering (my PhD was in modelling and
control of engines), I've  freelanced for years simulating dynamic systems
and figuring out ways to control them. I've also maintained a parallel
career as a professional musician and producer, with a lot of experience
recording, mixing  and mastering. My holy grail is to bring the 2 strands
together into a single career which is why I've taken an active interest in
audio signal processing, software and hardware design.

My questions are:

- Can you recommend any courses / resources for filling in my knowledge
gap. I can just about follow most of what gets discussed here though my
practical experience of most techniques is minimal.

- What are the essential areas of knowledge required to follow a career in
audio signal processing, what route did you take (self taught / MSc / PhD,
on the job learning?)

- What are the job opportunities like (and where) and what are the biggest
growth areas in the field?

Apologies if this is a little off-topic, but I greatly appreciate any
advice you can offer.

With best regards

Roshan 'Tosh' Wijetunge

www.wijproductions.com
www.wijet.co.uk
___
dupswapdrop: music-dsp mailing list
music-dsp@music.columbia.edu
https://lists.columbia.edu/mailman/listinfo/music-dsp