Audio File

An audio recording produced from original analog or digital audio formats that has been encoded using linear Pulse Code Modulation (PCM). For audio files, it is important to distinguish between a file format and a codec. A codec performs the encoding and decoding of the raw audio data while the data itself is stored in a specific audio file format, such as Broadcast WAV (.wav). Sampling frequency, bit-depth, and monophonic or stereo, for example, are important characteristics of audio files.

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