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In Reply to: RE: This severely compromised system is THE best way to contrast the merits of the software tweaks. posted by Ugly on August 15, 2015 at 12:41:50:
"Really Tony? -110dB with respect to what exactly?????? Meaningless!"
I made the assumption that Archimago used constant settings to record the output of his DAC with his ADC on all of his graphs. So they are dB down below the maximum signal that appears or could appear in any of his tests. I also assumed that he calibrated the gain of his DAC to ADC loop so that it is unity gain. So therefore, all dB would be relative the the maximum output in the 44/24 format, that is to say that -110 dB would be -110 dBfs. with 0 dBFs corresponding to +8388607 or -8388608 integer sample values.
I assume that anyone competent to record digital audio with a PCM recorder would understand how to set up their equipment to get consistent levels and would understand that in PCM recordings dB levels are referenced with respect to full scale, hence the term dBfs. I did not question Archimago's competence in regard to these matters and I assumed that anyone reading and commenting would be equally knowledgeable.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- dBfs - Tony Lauck 08/15/1513:30:40 08/15/15 (1)
- OK, back on topic. - Ugly 13:50:46 08/15/15 (0)
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