When starting a audio chat I often have problems with my microphon and recenly I
found that the sample rate is different for in and out:
# > cat /proc/asound/card1/stream0
Logitech Inc Logitech Stereo H650e at usb-0000:00:1d.0-1.7, full speed : USB Audio
Playback:
Status: Running
Interface = 2
Altset = 1
Packet Size = 192
Momentary freq = 48000 Hz (0x30.0000)
Interface 2
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 1 OUT (ADAPTIVE)
Rates: 8000, 16000, 24000, 32000, 44100, 48000
Capture:
Status: Running
Interface = 1
Altset = 1
Packet Size = 200
Momentary freq = 44100 Hz (0x2c.199a)
Interface 1
Altset 1
Format: S16_LE
Channels: 2
Endpoint: 1 IN (ASYNC)
Rates: 8000, 16000, 24000, 32000, 44100, 48000
This seems odd to me. Adding some debug to kernel I see:
[ 129.858365] usb 1-2: 1:1: setting freq 44100 to ep 0x81
[ 129.860514] usb 1-2: 1:1: setting freq 44100 to ep 0x81
[ 131.884314] usb 1-2: 2:1: setting freq 44100 to ep 0x1
[ 131.886567] usb 1-2: 2:1: setting freq 44100 to ep 0x1
[ 131.898714] usb 1-2: 2:1: setting freq 48000 to ep 0x1
[ 131.900847] usb 1-2: 2:1: setting freq 48000 to ep 0x1
Is this expected or should I try make both the same?
Jocke
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