Calculate size of 1 minute PCM recording

Question

I want to calculate how much 1 minute of recording does take. I know sampleRate, nr of channels and bit depth. From as I know, the sample rate is how many samples are given into a second. Bit depth is how many bits are 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, I don't know how to integrate it in my formula. All I know about nr of channels is that when stereo recording, each frame is composed from 2 samples and when mono recording each frame is composed by 1 sample. Please show me the correct formula to compute the size of 1 minute recording.

Accepted Answer

You just need to multiply by the number of channels

Size per minute (in bytes):

```
sampleRate * (bitDepth / 8) * channelCount * 60
```

Calculate size of 1 minute PCM recording

Solution

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