Definition of Sub-band coding
In signal processing, sub-band coding (SBC) is any form of transform coding that breaks a signal into a number of different frequency bands, typically by using a fast Fourier transform, and encodes each one independently. This decomposition is often the first step in data compression for audio and video signals.
SBC is the core technique used in many popular lossy audio compression algorithms including MP3.
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Frequently asked questions
What is Sub-band coding?
In signal processing, sub-band coding (SBC) is any form of transform coding that breaks a signal into a number of different frequency bands, typically by using a fast Fourier transform, and encodes each one independently.
Sources & credits
- Wikipedia: Sub-band coding – CC BY-SA 4.0
- Image – Public domain