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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Digital Volume Control, More than you ever wanted to know... posted by DJS on February 9, 2007 at 01:16:17:
Thanks for the excellent explanation. If we want to increase the volume in the digital domain are the pitfalls the same? I remember reading that if you increase volume digitally by 6.02dB that no dither need be applied if the word length is reduced.Nearly all the reading I have done is about reducing word length from 24 bit to 16 bit in order to make a CD. But if you are, for example, recording off the air to hard drive using a 24 bit A/D and playing back using a 24 bit D/A there is no need to truncate to 16 bit. However, and this where I get confused, most (all?) digital components process internally at far greater than 24 bit (typically 72dB???).
So even when our final output stage is 24dB, doesn't this always represent a truncation from a (much?) larger word with all the potential problems you have outlined above?
I have not been able to find anything about truncating from say 48dB to 24dB? Do you have any links?
Many thanks.
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Follow Ups
- How does what you say apply to digital increases ? - GGA 08:37:20 02/09/07 (1)
- Re: How does what you say apply to digital increases ? - DJS 19:41:27 02/09/07 (0)
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