File an issue and provide the two samples the one wiht distortion and the other with out.
On Wednesday, February 05, 2014 03:15:05 PM Tobiasz Karoń wrote: > I don't really know how the bride works and if it's just a config hack > (making ALSA output to a virtual JACK device), or some program passing data > through... > > 2014-02-05 Jonathan Aquilina <[email protected]>: > > I am no expert I have a hunch it potentially has somethign to do wiht the > > bridge, but I would say more investigation is warrented. > > > > Is the bridge versions and if so do jack have a newer version we should > > try > > and use? > > > > On Wednesday, February 05, 2014 03:09:50 PM Tobiasz Karoń wrote: > > > I did - I switched to JACK back-end, and the distortion disappeared. > > > > > > 2014-02-05 Jonathan Aquilina <[email protected]>: > > > > You tried to bypass the alsa jack bridge all together? > > > > > > > > On Wednesday, February 05, 2014 03:05:29 PM you wrote: > > > > > It sounds to me like some bad interpolation. Maybe ALSA→JACK does > > > > > > > > something? > > > > > > > > > However why rendering is affected? > > > > > > > > > > Btw: I captured the live output with jack_capture. > > > > > > > > > > 2014-02-05 Jonathan Aquilina <[email protected]>: > > > > > > Could this potentially have something to do with the latency of > > > > alsa > > > > > > > > or > > > > > > pulse > > > > > > compared to jack? > > > > > > > > > > > > On Wednesday, February 05, 2014 03:00:17 PM Tobiasz Karoń wrote: > > > > > > > What's strange - the distortion is also present in rendered WAV > > > > > > > file, > > > > > > > however it sounds different. > > > > > > > When using JACK back-end rendered file has no distortion either > > > > with > > > > > > > > > Fastest or Best interpolation method (they produce identical > > > > > > > output). > > > > > > > > > > > > > > 2014-02-05 Tobiasz Karoń <[email protected]>: > > > > > > > > Using this sample I've just spotted some distortion in the > > > > output. > > > > > > > > > > I've > > > > > > > > calculated the difference with the original sample - it's > > > > included > > > > > > as > > > > > > > > > > > > *distortion.flac*. > > > > > > > > > > > > > > > > I've made a few tests and I see that it happens with ALSA > > > > output > > > > > > > > (bridged > > > > > > > > > > > > > > back to JACK) - JACK output doesn't distort the output. > > > > > > > > I wonder if this is caused by LMMS or ALSA, or JACK-ALSA > > > > bridge? > > > > > > > > > > 2014-02-05 Tobiasz Karoń <[email protected]>: > > > > > > > > > > > > > > > > I've cut it down to 14kB :D > > > > > > > > > > > > > > > >> Less silence in the beginning and end, will sync better. > > > > > > > >> > > > > > > > >> > > > > > > > >> 2014-02-05 Tobiasz Karoń <[email protected]>: > > > > > > > >> > > > > > > > >> How about including this one with LMMS? > > > > > > > >> > > > > > > > >>> -- > > > > > > > >>> Tobiasz *unfa* > > > > > > > >>> > > > > > > > >>> -----BEGIN GEEK CODE BLOCK----- > > > > > > > >>> Version: 3.1 > > > > > > > >>> GIT/MU/P d->-- s+:-(--)> a? C++(+++)>$ ULC+(++)>$ !P? > > > > L+++>++++$ > > > > > > E? > > > > > > > > > > > >>> W++>$ !N-? !o--? K-? !w-- O? !M-- V? PS++ PE++ !Y+ !PGP+? > > > > !t(+) > > > > > > 5? > > > > > > > > > > > >>> !X > > > > > > > >>> !R+ > > > > > > > >>> tv b+>+++ DI>+ D+ G e h-->- !r y--() > > > > > > > >>> ------END GEEK CODE BLOCK------ > > > > > > > >> > > > > > > > >> -- > > > > > > > >> Tobiasz *unfa* > > > > > > > >> > > > > > > > >> -----BEGIN GEEK CODE BLOCK----- > > > > > > > >> Version: 3.1 > > > > > > > >> GIT/MU/P d->-- s+:-(--)> a? C++(+++)>$ ULC+(++)>$ !P? > > > > L+++>++++$ > > > > > > E? > > > > > > > > > > W++>$ > > > > > > > > > > > > > >> !N-? !o--? K-? !w-- O? !M-- V? PS++ PE++ !Y+ !PGP+? !t(+) 5? > > > > !X > > > > > > !R+ > > > > > > > > > > > >> tv > > > > > > > >> b+>+++ DI>+ D+ G e h-->- !r y--() > > > > > > > >> ------END GEEK CODE BLOCK------ > > > > > > > > > > > > > > > > -- > > > > > > > > Tobiasz *unfa* > > > > > > > > > > > > > > > > -----BEGIN GEEK CODE BLOCK----- > > > > > > > > Version: 3.1 > > > > > > > > GIT/MU/P d->-- s+:-(--)> a? C++(+++)>$ ULC+(++)>$ !P? > > > > L+++>++++$ > > > > > > > > > > E? > > > > > > > > > > > > W++>$ > > > > > > > > > > > > > > !N-? !o--? K-? !w-- O? !M-- V? PS++ PE++ !Y+ !PGP+? !t(+) 5? > > > > > > > > !X > > > > > > > > !R+ tv > > > > > > > > > > > > b+>+++ DI>+ D+ G e h-->- !r y--() > > > > > > > > ------END GEEK CODE BLOCK------ ------------------------------------------------------------------------------ Managing the Performance of Cloud-Based Applications Take advantage of what the Cloud has to offer - Avoid Common Pitfalls. Read the Whitepaper. http://pubads.g.doubleclick.net/gampad/clk?id=121051231&iu=/4140/ostg.clktrk _______________________________________________ LMMS-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lmms-devel
