On 11.09.2011 04:08, Hans Petter Selasky wrote:
Doesn't aiff files use a fixed sample rate? Try:
env AUDIODEV=/dev/dsp1 rec -r 16k /tmp/test.aiff
Or:
env AUDIODEV=/dev/dsp1 rec -r 8k /tmp/test.aiff
Well, I first noticed the problem using Skype, so I doubt, it is rec- or
aiff-specific. For me the quick and dirty hack below saved the day --
the recording is nice and clear now and I have no other USB audio
devices for this computer anyway:
--- sys/dev/sound/usb/uaudio.c 2011-07-24 19:12:34.000000000 -0400
+++ sys/dev/sound/usb/uaudio.c 2011-09-10 23:41:09.000000000 -0400
@@ -1026,4 +1026,7 @@
bit_resolution,
p_fmt->description);
+ if (ep_dir == UE_DIR_IN)
+ chan->sample_rate =
rate/3;
+ else
chan->sample_rate = rate;
chan->p_asid = asid;
I wonder, if a quirk can be added for this device...
I'm really surprised if your Logitech announces that it supports 48K and simply
outputs 16K. It would be
the latest great example of USB specification violation!
Maybe, the rate can altered on the fly by the driver, with 48K being the
highest available, but 16K being the default?
A dump of the descriptors using usbconfig and "sysctl hw.usb.uaudio.debug=15"
would also be appreciated.
% sysctl sysctl hw.usb.uaudio.debug
sysctl: unknown oid 'hw.usb.uaudio.debug'
I guess, I need to have USB_DEBUG on...
% usbconfig
ugen0.1: <UHCI root HUB VIA> at usbus0, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE
ugen1.1: <UHCI root HUB VIA> at usbus1, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE
ugen2.1: <EHCI root HUB VIA> at usbus2, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=SAVE
ugen3.1: <UHCI root HUB VIA> at usbus3, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE
ugen4.1: <UHCI root HUB VIA> at usbus4, cfg=0 md=HOST spd=FULL
(12Mbps) pwr=SAVE
ugen5.1: <EHCI root HUB VIA> at usbus5, cfg=0 md=HOST spd=HIGH
(480Mbps) pwr=SAVE
ugen2.2: <product 0x081b vendor 0x046d> at usbus2, cfg=0 md=HOST
spd=HIGH (480Mbps) pwr=ON
ugen0.2: <Microsoft Wireless Optical Mouse 1.00 Microsoft> at
usbus0, cfg=0 md=HOST spd=LOW (1.5Mbps) pwr=ON
Yours,
-mi
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