On Sat, 13 Feb 2016 15:18:53 -0600 Daniel Sheeler <dsheeler@xxxxxxxxx> wrote: Thanks for the replies ! > I'm assuming you're using jack... The delay is I think from your jack > buffer size and number of periods. The smaller the jack buffer and > number of periods, the smaller you make the delay you hear. I'm > hoping your buffer size is kinda big like 1024, whereas it could be > as small as maybe 32 or 64. I am not sure what you'll need to make > it before you are fine with the delay. > > All that said, do you know how to adjust the buffer size and number of > periods? If so, try making buffer size smaller until you can tolerate > the echo. Too small and you might get too many xruns. The system is Linux Mint 17. A 'ps aux' shows: /usr/bin/jackd -T -ndefault -t 200 -p 2048 -R -T -d alsa -n 2 -r 44100 -p 1024 -d hw:M1010LT,0 -X raw I tried to find the place in /etc/init.d/ where this command is written and haven't found anything. So far I thought that everything in a Linux system would be launched from there. I did a serach on various terms such as 'jackd', '44100'. Strange. So I copied/pasted the ps aux line above, changed '-p 1024' to '-p 128' then logged in as root, killed the existing jackd process (no audio app running) then pasted the new line. But this happened: This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 10 Failed to connect to session bus for device reservation Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection Audio device hw:M1010LT,0 cannot be acquired... Cannot initialize driver JackServer::Open failed with -1 Failed to open server So I then used qjackctl, changed the value which was 1024, to 128, and *rebooted*. Now it runs with: /usr/bin/jackd -T -ndefault -dalsa -dhw:M1010LT -r44100 -p128 -n2 This is quite different from the original one. Moreover, it does no good at all. There's crackling all over. Renoise cannot scroll the sequences properly, it is no good at all. So... 1) Where the hell does the first incantation of jackd comes from ? And where do the parameters comes from ? 2) How come it cannot be started from the command line by pasting the command line that is currently *running* as shown in 'ps aux' 3) Why are the new parameters so different, lacking many original options ? _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
