wiki:Audio_Device/C-Media_USB_1

Version 2 (modified by bennylp, 11 years ago) (diff)

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Sound Device Tests

Table of Contents:

  1. Hardware
  2. Results
    1. Test Date: 25/02/2008:


C-Media CM-108 USB Headphone Set

Hardware

Name:C-Media USB Headphone Set
System:HP d230 MT (DQ357T) Desktop PC,Windows XP SP2, P4 2.6GHz, 1GB RAM
Vendor:C-Media?
Chipset:C-Media CM108
Driver:Microsoft, 7/1/2001, ver 5.1.2535.0

Results

Test Date: 25/02/2008:

Software:

  • PJMEDIA, PortAudio WMME, version 0.8-trunk date 25/02/2008, Release version

Results:

8 HKz 16 KHz 44.1KHz 48 KHz
Play jitter (min/avg/max) 9.996/23.070/30.254 9.996/23.428/40.040 9.996/23.306/30.283 9.996/23.306/30.282
Rec jitter (min/avg/max) 9.997/23.071/30.526 9.997/23.429/39.922 9.996/23.308/30.278 9.996/23.307/30.170
playback-capture drifts (samples/sec) 0 -48 -132 -143

Test logs

@8KHz:

 15:17:11.688 os_core_win32. pjlib 0.8.0-trunk for win32 initialized
 15:17:11.797      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:17:11.797      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:17:11.797      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:17:11.797      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:17:11.969      pasound.c PortAudio sound library initialized, status=0
 15:17:11.969      pasound.c PortAudio host api count=3
 15:17:11.969      pasound.c Sound device count=12
 15:17:11.969          pjlib WinNT IOCP I/O Queue created (0085681C)
 15:17:11.969      sndtest.c Found 12 devices:
 15:17:11.969      sndtest.c  0: Microsoft Sound Mapper - Input (capture=2, playback=0)
 15:17:11.969      sndtest.c  1: C-Media USB Headphone Set   (capture=2, playback=0)
 15:17:11.969      sndtest.c  2: SoundMAX Digital Audio (capture=2, playback=0)
 15:17:11.969      sndtest.c  3: Microsoft Sound Mapper - Output (capture=0, playback=2)
 15:17:11.969      sndtest.c  4: C-Media USB Headphone Set   (capture=0, playback=2)
 15:17:11.969      sndtest.c  5: SoundMAX Digital Audio (capture=0, playback=2)
 15:17:11.969      sndtest.c  6: Primary Sound Capture Driver (capture=1, playback=0)
 15:17:11.969      sndtest.c  7: C-Media USB Headphone Set   (capture=1, playback=0)
 15:17:11.969      sndtest.c  8: SoundMAX Digital Audio (capture=2, playback=0)
 15:17:11.969      sndtest.c  9: Primary Sound Driver (capture=0, playback=2)
 15:17:11.969      sndtest.c  10: C-Media USB Headphone Set   (capture=0, playback=2)
 15:17:11.969      sndtest.c  11: SoundMAX Digital Audio (capture=0, playback=2)
 15:17:12.032      sndtest.c Testing playback device Microsoft Sound Mapper - Output
 15:17:12.032      sndtest.c Testing capture device Microsoft Sound Mapper - Input
 15:17:12.235      sndtest.c  Please wait while test is in progress (~11 secs)..
 15:17:23.344      sndtest.c  Dumping results:
 15:17:23.344      sndtest.c   Parameters: clock rate=8000Hz, 80 samples/frame
 15:17:23.344      sndtest.c   Playback stream report:
 15:17:23.344      sndtest.c    Duration: 10s.110
 15:17:23.344      sndtest.c    Frame interval: min=0.001ms, max=30.256ms
 15:17:23.344      sndtest.c    Jitter: min=9.996ms, avg=23.070ms, max=30.254ms
 15:17:23.344      sndtest.c   Capture stream report:
 15:17:23.344      sndtest.c    Duration: 10s.110
 15:17:23.344      sndtest.c    Frame interval: min=0.001ms, max=30.528ms
 15:17:23.344      sndtest.c    Jitter: min=9.997ms, avg=23.071ms, max=30.526ms
 15:17:23.344      sndtest.c   Checking for clock drifts:
 15:17:23.344      sndtest.c    No clock drifts is detected
 15:17:23.344      sndtest.c  Test completed with some warnings

@16KHz:

 15:19:22.922 os_core_win32. pjlib 0.8.0-trunk for win32 initialized
 15:19:23.016      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:19:23.016      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:19:23.016      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:19:23.016      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:19:23.188      pasound.c PortAudio sound library initialized, status=0
 15:19:23.188      pasound.c PortAudio host api count=3
 15:19:23.188      pasound.c Sound device count=12
 15:19:23.188          pjlib WinNT IOCP I/O Queue created (0085681C)
 15:19:23.188      sndtest.c Found 12 devices:
 15:19:23.188      sndtest.c  0: Microsoft Sound Mapper - Input (capture=2, playback=0)
 15:19:23.188      sndtest.c  1: C-Media USB Headphone Set   (capture=2, playback=0)
 15:19:23.188      sndtest.c  2: SoundMAX Digital Audio (capture=2, playback=0)
 15:19:23.188      sndtest.c  3: Microsoft Sound Mapper - Output (capture=0, playback=2)
 15:19:23.188      sndtest.c  4: C-Media USB Headphone Set   (capture=0, playback=2)
 15:19:23.188      sndtest.c  5: SoundMAX Digital Audio (capture=0, playback=2)
 15:19:23.188      sndtest.c  6: Primary Sound Capture Driver (capture=1, playback=0)
 15:19:23.188      sndtest.c  7: C-Media USB Headphone Set   (capture=1, playback=0)
 15:19:23.188      sndtest.c  8: SoundMAX Digital Audio (capture=2, playback=0)
 15:19:23.188      sndtest.c  9: Primary Sound Driver (capture=0, playback=2)
 15:19:23.188      sndtest.c  10: C-Media USB Headphone Set   (capture=0, playback=2)
 15:19:23.188      sndtest.c  11: SoundMAX Digital Audio (capture=0, playback=2)
 15:19:23.250      sndtest.c Testing playback device Microsoft Sound Mapper - Output
 15:19:23.250      sndtest.c Testing capture device Microsoft Sound Mapper - Input
 15:19:23.454      sndtest.c  Please wait while test is in progress (~11 secs)..
 15:19:34.625      sndtest.c  Dumping results:
 15:19:34.625      sndtest.c   Parameters: clock rate=16000Hz, 160 samples/frame
 15:19:34.625      sndtest.c   Playback stream report:
 15:19:34.625      sndtest.c    Duration: 9s.960
 15:19:34.625      sndtest.c    Frame interval: min=0.001ms, max=40.043ms
 15:19:34.625      sndtest.c    Jitter: min=9.996ms, avg=23.428ms, max=40.040ms
 15:19:34.625      sndtest.c   Capture stream report:
 15:19:34.625      sndtest.c    Duration: 9s.930
 15:19:34.625      sndtest.c    Frame interval: min=0.001ms, max=39.924ms
 15:19:34.625      sndtest.c    Jitter: min=9.997ms, avg=23.429ms, max=39.922ms
 15:19:34.625      sndtest.c   Checking for clock drifts:
 15:19:34.625      sndtest.c    Sound capture is 480 samples faster than playback at the end of the test (average is 48 samples per second)
 15:19:34.625      sndtest.c  Test completed with some warnings

@44.1KHz:

 15:22:11.625 os_core_win32. pjlib 0.8.0-trunk for win32 initialized
 15:22:11.735      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:22:11.735      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:22:11.735      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:22:11.735      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:22:11.891      pasound.c PortAudio sound library initialized, status=0
 15:22:11.907      pasound.c PortAudio host api count=3
 15:22:11.907      pasound.c Sound device count=12
 15:22:11.907          pjlib WinNT IOCP I/O Queue created (0085681C)
 15:22:11.907      sndtest.c Found 12 devices:
 15:22:11.907      sndtest.c  0: Microsoft Sound Mapper - Input (capture=2, playback=0)
 15:22:11.907      sndtest.c  1: C-Media USB Headphone Set   (capture=2, playback=0)
 15:22:11.907      sndtest.c  2: SoundMAX Digital Audio (capture=2, playback=0)
 15:22:11.907      sndtest.c  3: Microsoft Sound Mapper - Output (capture=0, playback=2)
 15:22:11.907      sndtest.c  4: C-Media USB Headphone Set   (capture=0, playback=2)
 15:22:11.907      sndtest.c  5: SoundMAX Digital Audio (capture=0, playback=2)
 15:22:11.907      sndtest.c  6: Primary Sound Capture Driver (capture=1, playback=0)
 15:22:11.907      sndtest.c  7: C-Media USB Headphone Set   (capture=1, playback=0)
 15:22:11.907      sndtest.c  8: SoundMAX Digital Audio (capture=2, playback=0)
 15:22:11.907      sndtest.c  9: Primary Sound Driver (capture=0, playback=2)
 15:22:11.907      sndtest.c  10: C-Media USB Headphone Set   (capture=0, playback=2)
 15:22:11.907      sndtest.c  11: SoundMAX Digital Audio (capture=0, playback=2)
 15:22:11.969      sndtest.c Testing playback device Microsoft Sound Mapper - Output
 15:22:11.969      sndtest.c Testing capture device Microsoft Sound Mapper - Input
 15:22:12.172      sndtest.c  Please wait while test is in progress (~11 secs)..
 15:22:23.297      sndtest.c  Dumping results:
 15:22:23.297      sndtest.c   Parameters: clock rate=44100Hz, 441 samples/frame
 15:22:23.297      sndtest.c   Playback stream report:
 15:22:23.297      sndtest.c    Duration: 9s.990
 15:22:23.297      sndtest.c    Frame interval: min=0.002ms, max=30.286ms
 15:22:23.297      sndtest.c    Jitter: min=9.996ms, avg=23.306ms, max=30.283ms
 15:22:23.297      sndtest.c   Capture stream report:
 15:22:23.297      sndtest.c    Duration: 10s.020
 15:22:23.297      sndtest.c    Frame interval: min=0.003ms, max=30.281ms
 15:22:23.297      sndtest.c    Jitter: min=9.996ms, avg=23.308ms, max=30.278ms
 15:22:23.297      sndtest.c   Checking for clock drifts:
 15:22:23.297      sndtest.c    Sound capture is 1323 samples faster than playback at the end of the test (average is 132 samples per second)
 15:22:23.297      sndtest.c  Test completed with some warnings

@48KHz:

 15:24:43.922 os_core_win32. pjlib 0.8.0-trunk for win32 initialized
 15:24:44.032      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:24:44.032      pasound.c PA message: Pa_GetDeviceInfo: Num input channels reported as 65535! Changed to 2.
 15:24:44.032      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:24:44.032      pasound.c PA message: Pa_GetDeviceInfo: Num output channels reported as 65535! Changed to 2.
 15:24:44.188      pasound.c PortAudio sound library initialized, status=0
 15:24:44.204      pasound.c PortAudio host api count=3
 15:24:44.204      pasound.c Sound device count=12
 15:24:44.204          pjlib WinNT IOCP I/O Queue created (0085681C)
 15:24:44.204      sndtest.c Found 12 devices:
 15:24:44.204      sndtest.c  0: Microsoft Sound Mapper - Input (capture=2, playback=0)
 15:24:44.204      sndtest.c  1: C-Media USB Headphone Set   (capture=2, playback=0)
 15:24:44.204      sndtest.c  2: SoundMAX Digital Audio (capture=2, playback=0)
 15:24:44.204      sndtest.c  3: Microsoft Sound Mapper - Output (capture=0, playback=2)
 15:24:44.204      sndtest.c  4: C-Media USB Headphone Set   (capture=0, playback=2)
 15:24:44.204      sndtest.c  5: SoundMAX Digital Audio (capture=0, playback=2)
 15:24:44.204      sndtest.c  6: Primary Sound Capture Driver (capture=1, playback=0)
 15:24:44.204      sndtest.c  7: C-Media USB Headphone Set   (capture=1, playback=0)
 15:24:44.204      sndtest.c  8: SoundMAX Digital Audio (capture=2, playback=0)
 15:24:44.204      sndtest.c  9: Primary Sound Driver (capture=0, playback=2)
 15:24:44.204      sndtest.c  10: C-Media USB Headphone Set   (capture=0, playback=2)
 15:24:44.204      sndtest.c  11: SoundMAX Digital Audio (capture=0, playback=2)
 15:24:44.266      sndtest.c Testing playback device Microsoft Sound Mapper - Output
 15:24:44.266      sndtest.c Testing capture device Microsoft Sound Mapper - Input
 15:24:44.469      sndtest.c  Please wait while test is in progress (~11 secs)..
 15:24:55.594      sndtest.c  Dumping results:
 15:24:55.594      sndtest.c   Parameters: clock rate=48000Hz, 480 samples/frame
 15:24:55.594      sndtest.c   Playback stream report:
 15:24:55.594      sndtest.c    Duration: 9s.990
 15:24:55.594      sndtest.c    Frame interval: min=0.003ms, max=30.285ms
 15:24:55.594      sndtest.c    Jitter: min=9.996ms, avg=23.306ms, max=30.282ms
 15:24:55.594      sndtest.c   Capture stream report:
 15:24:55.594      sndtest.c    Duration: 10s.020
 15:24:55.594      sndtest.c    Frame interval: min=0.003ms, max=30.173ms
 15:24:55.594      sndtest.c    Jitter: min=9.996ms, avg=23.307ms, max=30.170ms
 15:24:55.594      sndtest.c   Checking for clock drifts:
 15:24:55.594      sndtest.c    Sound capture is 1440 samples faster than playback at the end of the test (average is 143 samples per second)
 15:24:55.594      sndtest.c  Test completed with some warnings