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- Super Bit Mapping (SBM) is a noise shaping process, developed by Sony for CD mastering. Sony claims that the Super Bit Mapping process converts a 20-bit signal from master recording into a 16-bit signal nearly without sound quality loss, using noise shaping to improve signal-to-noise ratio over the frequency bands most acutely perceived by human hearing. Audible quantization error is reduced by noise shaping the error according to an equal-loudness contour. This processing takes place in dedicated hardware inside the recording device. A similar process is used in Sony's DSD to PCM conversion and is called SBM Direct. (en)
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- Super Bit Mapping (SBM) is a noise shaping process, developed by Sony for CD mastering. Sony claims that the Super Bit Mapping process converts a 20-bit signal from master recording into a 16-bit signal nearly without sound quality loss, using noise shaping to improve signal-to-noise ratio over the frequency bands most acutely perceived by human hearing. Audible quantization error is reduced by noise shaping the error according to an equal-loudness contour. (en)
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