cc -O -g -D_GNU_SOURCE -shared -fpic -c -o app_voicechanger.o app_voicechanger.c
app_voicechanger.c: In function ‘audio_callback’:
app_voicechanger.c:120: error: incompatible type for argument 2 of ‘SoundTouch_putSamples’
app_voicechanger.c:121: error: incompatible type for argument 1 of ‘memset’
app_voicechanger.c:122: error: incompatible type for argument 2 of ‘SoundTouch_receiveSamplesEx’