dCS 974 User Manual |
| Manual for Software Version 1.0x | ||
dCS Ltd |
| May 2001 | ||
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| In | Out | Number of Filters Available |
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| DSD | DSD | 8 |
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| PCM | DSD | 8 |
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| 192 | 96 | 4 |
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| 176.4 | 88.2 | 4 |
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| 176.4 | 44.1 | 4 |
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| 96 | 48 | 4 |
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| 96 | 44.1 | 4 |
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| 88.2 | 44.1 | 4 |
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| 48 | 44.1 | 4 |
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| 44.1 | 96 | 4 |
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Table 3 – Conversions with Multiple Filter Options
We encourage you to experiment with the filters, to find the one that sounds best for your particular application. Do not assume that one filter is best for all applications!7
The menu is dynamic - that is, it updates to show valid selections. For example, Fs In = 96kHz, Fs Out = 44.1kHz has 4 options and shows:
While Fs In = 96kHz, Fs Out = 88.2kHz has only one option and shows:
The dCS 974 remembers the last filter selection for every conversion, so if you choose Filter 4 for 96Ö44.1 and Filter 2 for 96Ö48, these separate settings will be stored and loaded when you switch between them.
Output Word LengthSelect the required Word Length from the list and press Set.
IMPORTANT! The dCS 974 generates long word length (24 bit) data and truncating this adds extra noise. It can also add highly undesirable behaviour at low signal levels. We recommend that you use a high order noise shaping function, but see the section Word Length Reduction, page 104 and try for yourself. This is a seriously major topic, and you should experiment.
7The reports we receive from users suggest that for PCM work, Filter 2 is well suited to some classical music, and that Filters 3 and sometimes 4 suit rock. However, views vary quite a lot.
Manual part no: DOC1241121A1 | Page 46 | Document No: |
Contact dCS on + 44 1799 531 999 | email to: more@dcsltd.co.uk |
(inside the UK replace + 44 with 0) | web site: www.dcsltd.co.uk |