CD-DVD Tutorials - Herong's Tutorial Examples - v2.23, by Dr. Herong Yang
WAV - WaveForm Audio Format
This section provides basic information on WAV, WaveForm audio format.
What is WAV? WAV is a short name for WaveForm, which is audio file format developed by Microsoft and IBM.
A WAV file name has the file extension of .wav.
The original WAV file format contains uncompressed audio data using the same encoding method, PCM (Pulse-Code Modulation), as audio CDs. So uncompressed WAV file size matches audio track sizes on audio CDs.
WAV files may also be encoded with a variety of codecs (coder and decoder) to compress audio data. A WAV file encoded with the mp3 codec may reduce the audio data to the same level as a MP3 file.
Roughly, uncompressed WAV files takes about 10MB space per 1 minute of play time. Here is how to calculate space requirement based on PCM specifications:
16 bits per sample 44,100 samples per second 60 seconds per minute 2 channels for stereo sound 1 minute stereo sound requires: 2 * 60 * 44,100 * 16 bits = 2 * 60 * 44,100 * 2 bytes = 10,584,000 bytes = 10 MB
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