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Digitizing Sound
Term | Definition |
---|---|
Sampling | process used to convert analog sound waves into digital data to be used by computers. |
Sample rate | the number of samples taken per second, often measured in Kilohertz (kHz). |
Bit rate | the number of computer bits process per unit of time. |
Sample size | the number of bits used to save one sample. |
Channel | single audio stream consisting of a sequence of samples. |
Mono | one channel; audio is a single channel, where sound comes from a single direction. |
Stereo | two channels; creates the impression of sound being heard from various directions, as in human hearing. |
Audio file size | determined by the sample rate, sample size and number of channels used. |
File Formats | i) MP3 – MPEG-1 Audio Layer 3 ii) WAV – Waveform file iii) OGG – Ogg Vorbis iv) AIFF- Audio Interchange File Format |