[IDEA] Polarity Flip

[swizzle]

It just dawned on me that inverting the polarity of only one of the channels should produce a dramatic reduction in sound output and in fact it does. This confirms the ALSA code is working :-)

There are some people who like to invert one channel like that to go through the source/amp section of their setup with the idea that it helps balance out the power draw or something which leads to less distortion, then they switch the polarity of the speaker wires for the inverted channel so that they’re both in sync again.