C:\.......>riffmask PCM WAV filename to open: wav24_96000_1000_1000_1000_1000_1000_1000.wav WAV header preview [80 bytes] 52 49 46 46 3C D6 83 00 57 41 56 45 66 6D 74 20 28 00 00 00 FE FF 06 00 00 77 01 00 00 5E 1A 00 12 00 18 00 16 00 18 00 3F 00 00 00 01 00 00 00 00 00 10 00 80 00 00 AA 00 38 9B 71 64 61 74 61 00 D6 83 00 00 00 00 00 00 00 00 00 00 00 00 00 "data" [64 61 74 61] This appears to be a valid RIFF WAV header wFormatTag: WAVE_FORMAT_EXTENSIBLE nChannels: 6 nBitsPerSample: 24 nSamplesPerSec: 96000 nBlockAlign: 18 wValidBitsPerSample: 24 dwChannelMask: 0x0000003F (binary: 111111) Channels specified by dwChannelMask: SPEAKER_FRONT_LEFT SPEAKER_FRONT_RIGHT SPEAKER_FRONT_CENTER SPEAKER_LOW_FREQUENCY SPEAKER_BACK_LEFT SPEAKER_BACK_RIGHT Change the dwChannelMask Value? (y or n) y Enter a new channelMask value in hex (0 to 0xFFFFFFFF) 060F New channelMask: 0x0000060F (binary: 11000001111) Channels specified by dwChannelMask: SPEAKER_FRONT_LEFT SPEAKER_FRONT_RIGHT SPEAKER_FRONT_CENTER SPEAKER_LOW_FREQUENCY SPEAKER_SIDE_LEFT SPEAKER_SIDE_RIGHT