<html><body><div style="color:#000; background-color:#fff; font-family:verdana, helvetica, sans-serif;font-size:12pt"><span style="font-family: times new roman,new york,times,serif;">Just now something odd happened. I resumed playback of a 16/44.1 FLAC file from paused state (without glitches)<br>and thought I'd check the stream parameters. I was presented with this:<br><br>root@voyage:~# cat /proc/asound/card0/stream0 <br>ARCAM ARCAM DAC at usb-0000:00:1d.0-1, full speed : USB Audio<br><br>Playback:<br> Status: Running<br> Interface = 1<br> Altset = 1<br> URBs = 3 [ 8 8 8 ]<br> Packet Size = 585<br> Momentary freq = 44104 Hz (0x2c.1a98)<br> Feedback Format = 10.14<br> Interface 1<br> Altset 1<br> Format: S24_3LE<br> Channels: 2<br> Endpoint: 1 OUT
(ASYNC)<br> Rates: 32000, 44100, 48000, 88200, 96000<br><br>Note the odd momentary frequency. When I ran the same command a few seconds later it displayed the expected momentary frequency of 44100 Hz.<br>I then started running the command every few seconds and noticed something odd: most of the time it showed the proper 44100 Hz. But now and then<br>it suddenly displayed 44104 Hz or 44096 Hz. On the other hand "cat /proc/asound/card0/pcm0p/sub0/hw_params" always showed the correct frequency.<br>I'm guessing this is either an ssh bug or there's genuinely something wrong with the way snd-usb-audio communicates with the Arcam. Any ideas what this<br>might be?<br></span></div></body></html>