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Audio Tutorial for iOS: File and Data Formats [2014 Edition]

Learn about audio file and data formats in this Audio Tutorial series for iPhone developers. By Audrey Tam.

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Contents

10 mins

Sample Rates

There’s one final piece of terminology to cover before we move on: sample rates.

When converting an analog signal to digital format, the sample rate is how often the sound wave is sampled to make a digital signal.

Almost always, 44,100Hz is used because that is the same rate for CD audio.