Hello Daniel,
Thank you very much for your help and sorry for the late answer. I was without internet access for the last few days.
I have tried the patch that you sent me(with a minor modification: fp->rate_max(instead of min) = 48000; ). If I try to record using 48kHz and then playback, it will playback in "fast speed", voices being recorded as "chipmunks". Only at 16000Hz it records at "normal speed".
So it seems that the recording is still done in fact at 16kHz, even though now the driver appears to support sampling rates between 16000-48000Hz.
Dmesg is also showing me this everytime I try to record using the microphone(These messages appeared even without the driver modification): [ 165.364728] ALSA clock.c:242 current rate 175902 is different from the runtime rate 48000 [ 171.838509] ALSA clock.c:242 current rate 51816 is different from the runtime rate 48000 [ 206.950822] ALSA clock.c:242 current rate 281039 is different from the runtime rate 48000 [ 968.713856] ALSA clock.c:242 current rate 6096811 is different from the runtime rate 48000
Once again, thank you very much for your support!
Best Regards, Gordon
On Thu, Jul 12, 2012 at 3:44 AM, Daniel Mack zonque@gmail.com wrote:
On 10.07.2012 23:33, Daniel Mack wrote:
Hi Gordon,
On 10.07.2012 20:57, Gordon Dilan wrote: 0
Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 2 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 2 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 11 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 4 bSubframeSize 2 bBitResolution 16 bSamFreqType 1 Discrete tSamFreq[ 0] 16000The interface only reports this single sample rate. If the vendor claims that there are in fact more, it would be good to know which ones.
Then we can add a quirk to parse_audio_format_rates_v1() in sound/usb/format.c - that shouldn't be too hard.
Something like the patch below could help. Can you try this?
Daniel