On 2015-07-14 16:11, Jack wrote: > Hello, > > Jumping fast to certain coefficient (for frequency around 40/50 Hz and > Q around 0.7) cut sound on iOS (iPad) when i use libpd (it seems to be > OK with MacOSX). > I need to restart the iOS after. > Do you know what I have to do to solve this issue ?
provide a test-patch. two ideas: - the quick jump causes some very high sample values. the iOS system limiter~ mutes the signal and takes ages to recover (too long to wait). a quick fix would be to use [clip~] just before the [dac~]s - the quick jump might cause a NaN to be introduced in the signal vector; due to the recursive nature of [biquad~] all successive samples become NaNs. no quick fix for this. try to get the sample values after muting. e.g. using [print~], or even just [env~]... fmasdr IOhannes
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