Mulch Tune iOS App

in Gallery • 4 years ago

This experimental app applies a "mulch in time" algo to both the audio stream and visualization of this stream.

It uses a custom audio node, which was very easy to write, given the cinder audio interface.

https://www.youtube.com/watch?v=gb3AJDQZaXc

There was one gotcha developing in the cinder's audio namespace, specific to IOS: after audio session interruption, it was impossible for me restart it.

I am going to look into why audio session interruption end is not handled in cinder audio.

--8

Analysis: http://post.scriptum.ru
Synthesis: http://onewaytheater.us

Replies(4)

rich.e

Re: Mulch Tune iOS App

4 years ago

Really cool! Is the 'mulching' a form of granular synthesis?

Let us know about the iOS audio session stuff (there is a related issue here with some nice background info), its something that I've been wanting to solve but haven't found the time to look into it..

cheers,

Rich

eight_io

Re: Re: Mulch Tune iOS App

4 years ago

@rich.e Mulching is a weighted averaging of the latest frame with the previous average. The slider controls the weight of the latest frame, so in the far left position the weight is 1 (undistorted sound), in the far right position the weight changes with each frame so that the process creates equal averaging of all frames over the duration of a sound.

It is analogous to the mulch video process, exemplified here:

https://www.instagram.com/p/9jP8MeGOaB/?taken-by=mulchcam

Thanks for the link. In my case as far as I remember the SignalInterruptionEnd event _is_ received by the device manager but I did not see it being handled in any way (there was a log statement, which was commented out, but that was it in the listener). SignalInterruptionBegan event seems to be handled automagically, and the audio level smoothly goes to zero.

There will be a 1.1 release and a cinder pull request, if I figure out how to handle SignalInterruptionEnd event.

Lastly, thanks for the audio interface, barring the above issues, it's extremely easy and pleasant to work with.

--8

Analysis: http://post.scriptum.ru
Synthesis: http://onewaytheater.us

Mike1

Re: Mulch Tune iOS App

2 years ago

Hi, I just installed MulchTune for iPad and am having problems with it. It seems to immediately start recording with no way to turn it off without forcestopping the app, nor are any controls findable except play/stop, which doesn't seem to do anything, and a search icon that accesses my music library, but will not load any music. Doesn't respond to mike audio, and if music is playing, stops when switching to MT app. Can't make head nor tail of it or get it to do anything but use system resources. Help!