Re: [PD] no more sound on iOS with biquad~ and libpd
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Thanx IOhannes, First : Isolate the biquad~ stuff has solved the issue (without [clip~ -1 1]) Secondly : Adding a [clip~ -1 1] just before the [dac~] doesn't solve the problem. Thirdly : But I don't know yet where the problem comes : if a [clip~ -1 1] is added after the biquad~ stuff, it works, no crash. I have to dig a little bit more... ++ Jack Le 14/07/2015 16:53, IOhannes m zmoelnig a écrit : 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 ___ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQEcBAEBAgAGBQJVqPFjAAoJEOuluecjw8GUXkkH/RPsLKWwZLlpZ+w3He932OIh IZtaQN+dE22ZNYlbmkF2hph/B+27fGf1Nn36N/xmhmYQ3Ar/Jcakdosp3GZRZeUt ZUlTnJpBAQIzASYvDw3eRyINOkvV9I52j/UFaWNolK7J4dJcLvMoMxAABDgTVgLd B01SNCGx2g4A2s2krmkhWH5LlQgZzTaUWzI/rk0dtjC8QN76ek6PuR67tw17Yx9c NOtGOOXVapOqylBzMxvV05iwOM4dJlP9tSLv+BYCGngvDFfdzmUQ9JGrL8IYB9py P1/j1VqdGp2sRUJ4HQwpwpG3wH3gs/aWSVQINqI5IqMPQndA/CkChZjLSr1Sirk= =YLEk -END PGP SIGNATURE- ___ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] no more sound on iOS with biquad~ and libpd
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 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 ? Thanx. ++ Jack -BEGIN PGP SIGNATURE- Version: GnuPG v1 iQEcBAEBAgAGBQJVpRiXAAoJEOuluecjw8GUot8H/0uXDRjgs3PaLrNcOUIVTN5i tkUp1rBdeVqxqaTwMmDB/jITAwIYFMvJPz7t75sJ1ESgl36W0iMrbOYy13NOsXPO gsOtFll7QV6pw4zr7q2LbChEEEJd8sOWcJDzuPu3aBQK/fTTjrwstuzEBi+gVBB3 0LZ9C+FmccTOcMWQzcUl7lNgBk0E59n5w0Sd/hNmYLV7Fzhh5xLUwsA3sexlzlNJ BhL8ESy9eMZLhfL75Y8S1Jj9M35jRtepQhB9uF8gNnAXg1gG3oFItEAib3pI/IMb afdSjld9ZOL81nmNN0UboOpt4bPaBlmQGeiqKPSlt5dYJdG3nVAI32R5DIiPFhk= =YCmj -END PGP SIGNATURE- ___ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] no more sound on iOS with biquad~ and libpd
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 signature.asc Description: OpenPGP digital signature ___ Pd-list@lists.iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
