Hello; I recently acquired a Schiit Bifrost and have been attempting to achieve (what I would call) "bit perfect" performance with 16 and 24 bit music files at 44.1, 96 and 192K over the USB interface. I have tried using two physicaly different computers: an older Toshiba Satellite 100 laptop and an older Dell Inspirion 1501 laptop. I have tried Ubuntu 12.04 desktop and server environment (server with ALSA only) and Ubuntu 12.10 beta 1. I have tried mpd in the 12.04 server environment as well as Guayadeque in the 12.04 and 12.10 desktop environments, and Quod Libet in the 12.04 desktop environment. In all of these cases, I end up with results that appear to be the same, or at least differ in ways indistinguishable to me. To elaborate, if I play a 16bit/44.1K FLAC file, then switch to a 24 bit and/or higher resolution file, the audio for the second file is garbled in a very distinctive way - it sounds like it is being passed through some sort of "distortion network". The basic nature of the melody is apparent, but everything sounds really odd. If I stop the second song and restart it, often on this second try it will play fine. Sometimes I have to do this more than once to get it to play fine. In all cases, I have configured the music play to use "hw:1,0" as my output device as this seems to be the generally accepted way of getting directly to the device. I have seen a set of postings on this list describing a similar-sounding set of problems that appeared in late 2011, went away for awhile, and then re-appeared in mid-2012, but have apparently not been resolved. Also I have seen a similar sounding problem on the Guayadeque support list. If anyone has any suggestions, I am willing to experiment (carefully) and document results. Thanks in advance, -- Monet's Chemist ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
