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Realt-Time Audio Effect - DSP implementation - pitch shifter

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By ilmatematico, Junior Member on 12th January 2016, 01:30 PM
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Hi
i want to make an app totally similar to this one (which is not yet supported after android api 14)
audioshift.surina.net
www youtube com / watch?v=AGZ7z_OVahU

wich basically is a realtime audio effect, that get the output mix, do some dsp stuff and put the result out.

i reverse enginereed the app and found that they provide a native library, to make their specific implementation of a generic android.media.audiofx.AudioEffect (using TYPE_NULL).
this library i suppose i a slightly variant of the OpenSrc soundtouch.surina.net

so my question is how can i do this modification to the soundtouch library? because in the library is only present a method that operate on samples from file and not from stream.

Thanks
 
 
11th May 2019, 02:36 PM |#2  
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Im intresting how to do this
12th May 2019, 11:08 AM |#3  
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Im found half solve for this problem with changing samplerate in audio policity files, but my problem tempo is slowed down, while pitch is good for me.
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