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Sample Rate

Last updated: May 23, 2022

When an analogue signal gets converted into digital one it gets sampled or measured, usually several times a second. This sample rate here is in Hertz (Hz) meaning this is how many times it gets sampled per second.

A faster sampling rate makes for a more accurate representation of the original signal but requires more data storage space (and download time). The most common sample rate is 44100 Hz which was made popular with the introduction of the audio CD format. Nyquist dictates that the maximum frequency that can be represented is half the sample rate which would be 22050 Hz in this case. This is safely above the upper range of human hearing which is around 20kHz.

There are circumstances where it can be beneficial to use a higher sample rate but for a final export we believe 44100 Hz to be ideal. 48000 Hz is also a good choice as lots of professional audio equipment runs at that frequency and it would be detrimental to downsample it. There isn’t any reason for publishing at a higher sample rate than this though.

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It checks things like loudness, silences, restarted sentences, encoding, swearing and metadata.

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