About the Noise Shapers | 36 |
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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 |
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| 44.1kHz |
| 48kHz | ||
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| Normal |
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| Normal |
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Flat TPDF | 0.0dB |
| 3.4dB | 0.0dB |
| 3.4dB |
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3.5dB |
| 7.0dB | 3.5dB |
| 7.0dB | |
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Shape A | 6.4dB |
| 12.2dB | 6.4dB |
| 12.2dB |
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Shape B | 19dB |
| 22.6dB | 19.6 |
| 23.6dB |
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Shape C | 15.1dB |
| 17.9dB | 18.6dB |
| 21.4dB |
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Shape D | 15.3dB |
| 21.5dB | 19.9dB |
| 23.5dB |
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518 User Guide