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[A440hz]

Hi,

Love Bass! I use it to playback 6 mono files into a 5.1 surround channel assignment.

I don't know anything about BASSMix. Using it and BASS, would it be possible to take a single stereo file and mix it to 6 independent mono streams that could then be assigned to a 5.1 layout? I'd need to invert the phase differently on either channel in all stereo to mono mixes. Ideally, I would like to do this all in a buffer and on multiple files from a playlist.

Thanks,
Joe

[Ian @ un4seen]

Do you just want to rearrange/invert the 6 channels? If so, BASSmix's matrix mixing feature could be used for that. If you want to actually split a 6 channel source into 6 separate streams, then BASSmix's "splitter" feature could be used to do that. Please see the BASSmix documentation for details on both.

[A440hz]

Thanks Ian!

I want to invert one of the stereo channels in different percentages. Am I right in assuming the following would work?

HSTREAM mixer=BASS_Mixer_StreamCreate(44100, 2, 0); // create a stereo mixer

HSTREAM source1=BASS_StreamCreateFile(FALSE, file1, 0, 0, BASS_STREAM_DECODE); // open 1st source file
BASS_Mixer_StreamAddChannel(mixer, source1, BASS_MIXER_MATRIX); // add it to the mix with matrix mixing enabled
float matrix[1][2]={
    {0.5, -0.5}, // mono out = left - right in   
};
BASS_Mixer_ChannelSetMatrix(source1, matrix); // apply the matrix

HSTREAM LFMIX=BASS_StreamCreate(44100,1,$BASS_SPEAKER_FRONTLEFT,mixer,0) // assign the mix to front left speaker

BASS_ChannePlay(LFMIX, FALSE); // play the mix

Thanks,
Joe

[Ian @ un4seen]

The matrix looks fine, but the "LFMIX" stream stuff not so much. I'm not sure there is really any need for that, as you could set the BASS_SPEAKER_FRONTLEFT flag on the mixer itself and make it mono. The code could be modified to look like this...

HSTREAM mixer=BASS_Mixer_StreamCreate(44100, 1, BASS_SPEAKER_FRONTLEFT); // create a mono mixer on front left speaker

HSTREAM source1=BASS_StreamCreateFile(FALSE, file1, 0, 0, BASS_STREAM_DECODE); // open 1st source file
BASS_Mixer_StreamAddChannel(mixer, source1, BASS_MIXER_MATRIX); // add it to the mix with matrix mixing enabled
float matrix[1][2]={
    {0.5, -0.5}, // mono out = left - right in   
};
BASS_Mixer_ChannelSetMatrix(source1, matrix); // apply the matrix

BASS_ChannePlay(mixer, FALSE); // play the mix

[A440hz]

Thanks Ian! I'll test when I get home from work