Is stereo audio two times shorter than mono?

Question

I can't find answer, question as above.

I have two files with sound data, with the same amount of bytes, the same sample size and the same sample rate. One is in mono, another is in stereo. Is stereo audio two times shorter than mono audio? Should I consider sample rate as sample per channel rate or literally sample rate (no distinction between channels)?

I'm working on app which will split channels from multichannel audio. Should I reduce framerate of splitted tracks by half?

Answer 1

filesize = sample size * channels * sample rate * time

or reformed:

time = filesize / (sample size * channels * sample rate)

So: YES the stereo file (channels == 2) will be half as long [measuring time here] if everything else is constant.