On Mon, Mar 4, 2013 at 3:16 AM, Peter Hartmann <peter@hartmanncomputer.com>wrote:
I'm using Ubuntu 12.04-amd64. I have done some optimizations for Linux Audio and USB audio. These do seem to have improved the sound quality through the dongle but they haven't solved this weird sound problem on incoming calls. If anyone's interested, my tweaks were; using the lowlatency kernel and adding 'snd-usb-audio nrpacks=1' to my /etc/modules.
Hello, you would better unload any *any* snd* module from kernel. mod_gsmopen do not use the audio subsystem at all, and those module can't have a positive effect, quite possibly negative. mod_gsmopen has nothing to do with ALSA or OSS, and do not use sound at all. You would be better served by an install that is exactly as in the wiki page. mod_gsmopen exchange digital audio directly at sample level with the dongle, through the serial interface. That dongle is not seen as an audio card from the kernel, but as a modem (exactly as 4 modems). Also, lowlatency kernel is not required or supported. I've listened to the recordings, but I cannot hear bad sounds, just some noise at beginning of recording. How do you obtain those recordings? Eg: the exact procedure you use to produce those files? -giovanni
Has anyone experienced this sound?
Thanks much!
Peter Hartmann Hartmann Computer Consulting
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Sincerely, Giovanni Maruzzelli Cell : +39-347-2665618