Recordings with external mic are low pitched and garbled about novocaine HOT 5 CLOSED

I narrowed it down to having 1 input channel and 2 output channels.

Don't have time to investigate this further right now, but my guess is:
In my output block, I call:
mRingBuffer->FetchInterleavedData(outData, numFrames, numChannels);

Since it's the output block, numChannels is 2.
However, there's only 1 input channel.

I'm guessing that the 1 channel is then split (interleaved) amongst the 2 output channels, so each output channel contains half of the input channel.

When I changed Novocaine::checkSessionProperties and manually set self.numOutputChannels to 1, then the sound records nicely.

from novocaine.

This is part of a problem in Novocaine with how it deals with multiple channels. I've not had time to delve back into this, as Novocaine is no longer a focus of mine (but I still come back to it whenever I can). If you (or anybody) has time to look into the root of this, it would be MUCH appreciated.

from novocaine.

Did anyone figure anything out about this?

from novocaine.

Yup -- see my last post, er, the one before this one. Change self.numOutputChannels to 1.
The number of output channels should probably be the same as the number of input channels, so if you're using a microphone, it should be 1. Otherwise you'll only be filling half of each output channel if you have 1 input and 2 outputs. This is my estimation of what is going on, but it has been months since I really dove into the Novocaine code.

from novocaine.

After spending some time in Novocaine code I can only say some abstract things: while in "playthru" it is reading less data than it's rendering. This is the result of different number of channels in output and input, as mentioned before. Thus you get either garbled (cut in every buffer) or low pitched sound (small buffer spread over larger space lowers the sound pitch) depending on how you feed data into output.

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