4.1.5 Client Sound Formats PDU

The following is an annotated dump of a Sound Formats PDU.

 00000000 02 15 00 00 00 9b 02 00 00 01 00 02 00 44 ac 00
 00000010 00 10 b1 02 00 04 00 10 00 00 00 02 00 02 00 44
 00000020 ac 00 00 47 ad 00 00 00 08 04 00 20 00 f4 07 07
 00000030 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40
 00000040 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff 11 00 02
 00000050 00 44 ac 00 00 db ac 00 00 00 08 04 00 02 00 f9
 00000060 07 02 00 02 00 22 56 00 00 27 57 00 00 00 04 04
 00000070 00 20 00 f4 03 07 00 00 01 00 00 00 02 00 ff 00
 00000080 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88
 00000090 01 18 ff 11 00 02 00 22 56 00 00 b9 56 00 00 00
 000000a0 04 04 00 02 00 f9 03 02 00 01 00 44 ac 00 00 a3
 000000b0 56 00 00 00 04 04 00 20 00 f4 07 07 00 00 01 00
 000000c0 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00
 000000d0 00 cc 01 30 ff 88 01 18 ff 11 00 01 00 44 ac 00
 000000e0 00 6d 56 00 00 00 04 04 00 02 00 f9 07 02 00 02
 000000f0 00 11 2b 00 00 19 2c 00 00 00 02 04 00 20 00 f4
 00000100 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0
 00000110 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff 11
 00000120 00 02 00 11 2b 00 00 a9 2b 00 00 00 02 04 00 02
 00000130 00 f9 01 02 00 01 00 22 56 00 00 93 2b 00 00 00
 00000140 02 04 00 20 00 f4 03 07 00 00 01 00 00 00 02 00
 00000150 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30
 00000160 ff 88 01 18 ff 11 00 01 00 22 56 00 00 5c 2b 00
 00000170 00 00 02 04 00 02 00 f9 03 31 00 01 00 44 ac 00
 00000180 00 fd 22 00 00 41 00 00 00 02 00 40 01 02 00 02
 00000190 00 40 1f 00 00 00 20 00 00 00 02 04 00 20 00 f4
 000001a0 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0
 000001b0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff 11
 000001c0 00 02 00 40 1f 00 00 ae 1f 00 00 00 02 04 00 02
 000001d0 00 f9 01 02 00 01 00 11 2b 00 00 0c 16 00 00 00
 000001e0 01 04 00 20 00 f4 01 07 00 00 01 00 00 00 02 00
 000001f0 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30
 00000200 ff 88 01 18 ff 11 00 01 00 11 2b 00 00 d4 15 00
 00000210 00 00 01 04 00 02 00 f9 01 31 00 01 00 22 56 00
 00000220 00 7e 11 00 00 41 00 00 00 02 00 40 01 02 00 01
 00000230 00 40 1f 00 00 00 10 00 00 00 01 04 00 20 00 f4
 00000240 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0
 00000250 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff 11
 00000260 00 01 00 40 1f 00 00 d7 0f 00 00 00 01 04 00 02
 00000270 00 f9 01 31 00 01 00 11 2b 00 00 bf 08 00 00 41
 00000280 00 00 00 02 00 40 01 31 00 01 00 40 1f 00 00 59
 00000290 06 00 00 41 00 00 00 02 00 40 01 00 00 00 00 00
 000002a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ...
 000003f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  
 02 -> MSG_SNDIN_PDU_HEADER::Version = MSG_SNDIN_FORMATS (2)
  
 15 00 00 00 -> MSG_SNDIN_FORMATS::NumFormats = 0x15 = 21
 9b 02 00 00 -> MSG_SNDIN_FORMATS::cbSizeFormatsPacket = 0x29b = 667 bytes
 01 00 02 00 44 ac 00 00 10 b1 02 00 04 00 10 00 00 00 -> AUDIO_FORMAT
    01 00 -> AUDIO_FORMAT::wFormatTag = 0x1 = 1
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    10 b1 02 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2b110 = 176400
    04 00 -> AUDIO_FORMAT::nBlockAlign = 0x4 = 4
    10 00 -> AUDIO_FORMAT::wBitsPerSample = 0x10 = 16
    00 00 -> AUDIO_FORMAT::cbSize = 0x0 = 0
  
 02 00 02 00 44 ac 00 00 47 ad 00 00 00 08 04 00 20 00 f4 07 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    47 ad 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0xad47 = 44359
    00 08 -> AUDIO_FORMAT::nBlockAlign = 0x800 = 2048
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 07 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 02 00 44 ac 00 00 db ac 00 00 00 08 04 00 02 00 f9 07 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    db ac 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0xacdb = 44251
    00 08 -> AUDIO_FORMAT::nBlockAlign = 0x800 = 2048
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 07 -> data
  
 02 00 02 00 22 56 00 00 27 57 00 00 00 04 04 00 20 00 f4 03 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff 
 -> AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    22 56 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x5622 = 22050
    27 57 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x5727 = 22311
    00 04 -> AUDIO_FORMAT::nBlockAlign = 0x400 = 1024
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 03 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 02 00 22 56 00 00 b9 56 00 00 00 04 04 00 02 00 f9 03 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    22 56 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x5622 = 22050
    b9 56 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x56b9 = 22201
    00 04 -> AUDIO_FORMAT::nBlockAlign = 0x400 = 1024
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 03 -> data
  
 02 00 01 00 44 ac 00 00 a3 56 00 00 00 04 04 00 20 00 f4 07 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    a3 56 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x56a3 = 22179
    00 04 -> AUDIO_FORMAT::nBlockAlign = 0x400 = 1024
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 07 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 01 00 44 ac 00 00 6d 56 00 00 00 04 04 00 02 00 f9 07 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    6d 56 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x566d = 22125
    00 04 -> AUDIO_FORMAT::nBlockAlign = 0x400 = 1024
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 07 -> data
  
 02 00 02 00 11 2b 00 00 19 2c 00 00 00 02 04 00 20 00 f4 01 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    11 2b 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x2b11 = 11025
    19 2c 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2c19 = 11289
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 02 00 11 2b 00 00 a9 2b 00 00 00 02 04 00 02 00 f9 01 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    11 2b 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x2b11 = 11025
    a9 2b 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2ba9 = 11177
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 01 -> data
  
 02 00 01 00 22 56 00 00 93 2b 00 00 00 02 04 00 20 00 f4 03 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    22 56 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x5622 = 22050
    93 2b 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2b93 = 11155
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 03 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 01 00 22 56 00 00 5c 2b 00 00 00 02 04 00 02 00 f9 03 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    22 56 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x5622 = 22050
    5c 2b 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2b5c = 11100
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 03 -> data
  
 31 00 01 00 44 ac 00 00 fd 22 00 00 41 00 00 00 02 00 40 01 -> AUDIO_FORMAT
    31 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_GSM610 (49)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    44 ac 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0xac44 = 44100
    fd 22 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x22fd = 8957
    41 00 -> AUDIO_FORMAT::nBlockAlign = 0x41 = 65
    00 00 -> AUDIO_FORMAT::wBitsPerSample = 0x0 = 0
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    40 01 -> data
  
 02 00 02 00 40 1f 00 00 00 20 00 00 00 02 04 00 20 00 f4 01 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    40 1f 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x1f40 = 8000
    00 20 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x2000 = 8192
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 02 00 40 1f 00 00 ae 1f 00 00 00 02 04 00 02 00 f9 01 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    02 00 -> AUDIO_FORMAT::nChannels = 0x2 = 2
    40 1f 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x1f40 = 8000
    ae 1f 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x1fae = 8110
    00 02 -> AUDIO_FORMAT::nBlockAlign = 0x200 = 512
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 01 -> data
  
 02 00 01 00 11 2b 00 00 0c 16 00 00 00 01 04 00 20 00 f4 01 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    11 2b 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x2b11 = 11025
    0c 16 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x160c = 5644
    00 01 -> AUDIO_FORMAT::nBlockAlign = 0x100 = 256
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 01 00 11 2b 00 00 d4 15 00 00 00 01 04 00 02 00 f9 01 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    11 2b 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x2b11 = 11025
    d4 15 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x15d4 = 5588
    00 01 -> AUDIO_FORMAT::nBlockAlign = 0x100 = 256
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 01 -> data
  
 31 00 01 00 22 56 00 00 7e 11 00 00 41 00 00 00 02 00 40 01 -> AUDIO_FORMAT
    31 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_GSM610 (49)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    22 56 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x5622 = 22050
    7e 11 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x117e = 4478
    41 00 -> AUDIO_FORMAT::nBlockAlign = 0x41 = 65
    00 00 -> AUDIO_FORMAT::wBitsPerSample = 0x0 = 0
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    40 01 -> data
  
 02 00 01 00 40 1f 00 00 00 10 00 00 00 01 04 00 20 00 f4 01 07 00 00 01 00 00 00
 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 01 30 ff 88 01 18 ff -> 
 AUDIO_FORMAT
    02 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_ADPCM (2)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    40 1f 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x1f40 = 8000
    00 10 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x1000 = 4096
    00 01 -> AUDIO_FORMAT::nBlockAlign = 0x100 = 256
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    20 00 -> AUDIO_FORMAT::cbSize = 0x20 = 32
    f4 01 07 00 00 01 00 00 00 02 00 ff 00 00 00 00 c0 00 40 00 f0 00 00 00 cc 
 01 30 ff 88 01 18 ff -> data
  
 11 00 01 00 40 1f 00 00 d7 0f 00 00 00 01 04 00 02 00 f9 01 -> AUDIO_FORMAT
    11 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_DVI_ADPCM (17)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    40 1f 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x1f40 = 8000
    d7 0f 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0xfd7 = 4055
    00 01 -> AUDIO_FORMAT::nBlockAlign = 0x100 = 256
    04 00 -> AUDIO_FORMAT::wBitsPerSample = 0x4 = 4
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    f9 01 -> data
  
 31 00 01 00 11 2b 00 00 bf 08 00 00 41 00 00 00 02 00 40 01 -> AUDIO_FORMAT
    31 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_GSM610 (49)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    11 2b 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x2b11 = 11025
    bf 08 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x8bf = 2239
    41 00 -> AUDIO_FORMAT::nBlockAlign = 0x41 = 65
    00 00 -> AUDIO_FORMAT::wBitsPerSample = 0x0 = 0
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    40 01 -> data
  
 31 00 01 00 40 1f 00 00 59 06 00 00 41 00 00 00 02 00 40 01 -> AUDIO_FORMAT
    31 00 -> AUDIO_FORMAT::wFormatTag = WAVE_FORMAT_GSM610 (49)
    01 00 -> AUDIO_FORMAT::nChannels = 0x1 = 1
    40 1f 00 00 -> AUDIO_FORMAT::nSamplesPerSecond = 0x1f40 = 8000
    59 06 00 00 -> AUDIO_FORMAT::nAvgBytesPerSecond = 0x659 = 1625
    41 00 -> AUDIO_FORMAT::nBlockAlign = 0x41 = 65
    00 00 -> AUDIO_FORMAT::wBitsPerSample = 0x0 = 0
    02 00 -> AUDIO_FORMAT::cbSize = 0x2 = 2
    40 01 -> data
  
 00... 00 00 00 -> MSG_SNDIN_OPEN::ExtraData