How to change the volume of a PCM data stream (failed experiment)

Question

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My code was never before used for processing signed values and as such bytes -> short conversion was incorrectly handling the sign bit. Doing that properly solv

Answer 1

Your 4th attempt is definitely the the correct approach. Assuming your sample range is centered around 0, multiplying each sample by another value is how you can change the volume or gain of a signal.

In this case though, I'd guess something funny happening behind the scenes when you're multiplying an int by a float and casting back to int. Hard to say without knowing what language you're using, but that might be what's causing the problem.