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About the Noise Shapers 36
518 User Guide
Noise shaper characteristics
Each noise shaper presents a different degree of subjective noise
reduction – we call that its ‘advantage’ – compared with normal dithering
using white TPDF dither. Each shaper also has a different degree of HF
boost. The parameters are summarised in the table below.
Shaper Advantage
44.1kHz 48kHz
Normal Pre-emphasis Normal Pre-emphasis
Flat TPDF 0.0dB 3.4dB 0.0dB 3.4dB
High-pass 3.5dB 7.0dB 3.5dB 7.0dB
Shape A 6.4dB 12.2dB 6.4dB 12.2dB
Shape B 19dB 22.6dB 19.6 23.6dB
Shape C 15.1dB 17.9dB 18.6dB 21.4dB
Shape D 15.3dB 21.5dB 19.9dB 23.5dB