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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: Re: "truncation" - pls explain posted by Werner on February 8, 2007 at 23:27:48:
As I write I am listening to a replay level of -24dBfs via a digital volume controlled DAC where a level of -20dBfs is stated to be the maximum attenuation before loss of resolution sets in (see also the various posts above). Frankly I cannot hear any difference (aside from one being quieter) between the two settings. However if I attempt to make the system as a whole comfortable to listen to within the recommended envelope set at the DAC of 0dBfs to -20dBfs by inserting a passive 10dB attenuator at the power amps input it still sounds worse than using no passive attenuator with a lower than recommended setting on the DAC. So much for passive attenuators.I guess that 1. one is perhaps less sensitive to resolution loss when listening at comparatively low levels (I guess peaks at around the upper 70dBs mark)and 2. I am still listening to only a 16 bit medium which allows greater tolerance even if upsampled (i.e there is no more actual information there). With highly compressed low sample rate digital radio I can set the digital volume control even lower without any apparent subjective losses.
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Follow Ups
- There is also a question of to what degree the loss of resolution is audible. - PAR 06:53:54 02/10/07 (0)
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