java - Calculate size of 1 minute PCM recording -


i want calculate how 1 minute of recording take. know samplerate, nr of channels , bit depth.

from know, sample rate how many samples given second. bit depth how many bits in 1 sample.

so,

  • samplerate = 44100
  • bitdepth = 16 (2 bytes per sample)
  • channels = 2
  • time = 60 sec

my formula is: (44100 * (16 / 8)) * 60 = ~5 mb per minute.

but i'm missing nr of channels, don't know how integrate in formula. know nr of channels when stereo recording, each frame composed 2 samples , when mono recording each frame composed 1 sample.

please show me correct formula compute size of 1 minute recording.

you need multiply number of channels

size per minute (in bytes):

samplerate * (bitdepth / 8) * channelcount * 60

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