Audio File Formats: It is a container format for storing audio data in a computer system. Many file formats are there for storing audio files.
The common approach towards storing digital audio formats is to test the audio voltage in regular intervals (for example: 44,100 times per second for CD audio or 48,000 or 96,000 times per second for DVD video and store the value along with a specific resolution (for example 16 bits per sample in CD audio. Thus number of channels (as 2 for stereo), sample rate and resolution are key parameters in audio file formats.