[of-dev] Recommendations for live iOS audio effects?

Elliot Woods elliot at kimchiandchips.com
Thu Jul 2 08:09:39 PDT 2015


Eigen is cross platform and does your low level vector math in an
accelerated way

But!... There must be better ways of working with sound
On Fri, 3 Jul 2015 at 00:07 Joel Gethin Lewis <me at joelgethinlewis.com>
wrote:

> Hey Hansi,
>
> Awesome - do you have any examples of Accelerate Framework use for this:
>
> > i usually work directly on the audio buffer level (the accelerate
> framework is really neat to get decent performance)
>
> Is that OSX / iOS only? I thought Accelerate was Apple only?
>
> Thanks for the reference too. Looks so much fun - I love it when you do
> the smile to yourself.
>
> Cheers,
>
> Joel
> > On 2 Jul 2015, at 15:42, Hansi Raber <super at superduper.org> wrote:
> >
> > hey joel!
> >
> > i've done quite some audio processing on ios, but i avoided audio units
> because of the cross platform problem.
> > so i can't talk about those.
> > i usually work directly on the audio buffer level (the accelerate
> framework is really neat to get decent performance)
> >
> > for obtaining samples voice/noise/silence discrimination could be useful
> (i played with this last week to figure where in an audio stream people are
> speaking: http://shout-toolkit.sourceforge.net/).
> >
> > i have some to-be-released-soon(tm) projects which i think go a bit in
> the direction you're talking about (from a technical point of view).
> > for instance here is one test that uses formant detection to grab
> samples from the users microphone and rearranges them:
> https://www.youtube.com/watch?v=pqgDtZCEbwo
> >
> > best, hansi.
> >
> >
> > On Thu, Jul 2, 2015 at 12:44 PM, Joel Gethin Lewis <
> me at joelgethinlewis.com> wrote:
> > Hey of-Dev world,
> >
> > I was looking for some recommendations for a live audio R&D project we
> are working on at the moment.
> >
> > The aim to create scary live audio effects based on the users
> microphone. It’s all being made on iOS - we are using Estimotes to make  an
> audio tour of a haunted space and I want to add live
> echos/delays/distortions to the persons footsteps and whimpers as they walk
> around.
> >
> > I found these AudioUnit plugins:
> >
> > https://github.com/admsyn/ofxAudioUnit
> > https://github.com/microcosm/ofxAudioUnitManager
> >
> > Does anyone have any other suggestions or advice?
> >
> > Cheers,
> >
> > Joel
> >
> > Joel Gethin Lewis
> > me at joelgethinlewis.com
> > @joelgethinlewis
> > +44 7932 792 076
> >
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> >
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>
>
> Joel Gethin Lewis
> me at joelgethinlewis.com
> @joelgethinlewis
> +44 7932 792 076
>
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