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In Reply to: RE: What is MQA ? posted by PAR on January 06, 2017 at 07:22:07
"1. It is a way of storing and transmitting high resolution audio data within a standard resolution audio stream."
Maybe stating the obvious but this means it is lossy compression, say a kind of highres MP3
The Well Tempered Computer
Yes it is lossy. However the important point is whether or not the loss is significant to a listener. After all, all known music recording systems are lossy in one way or another.
Highres MP3? Although there is some perceptual coding involved this is not the basis of the invention which depends upon the fact that for audio there is, in effect, no significant audio data (if any at all) related to the final few bits of a 24 bit word which are therefore available for other uses. At least that's how I understand it.
At least that is the claim.
Bit 24 is important only if one desires to record and play back 'Brownian Motion'. ;-)
OK, 24 bits is equal to a S/N of 144dB. My DAC is limited to about > 120dB which is about 21 bits so I'm could be perfectly happy with bit depth of 18-20 bits.
That's if I can have a sampling rate of 96KHz as a trade off just for giving up 4 bits I have no practical use for.
Absolutely agree. Even if we did have a system delivering 144dB dynamic range I don't think that we have a 144dB range hearing system to take advantage of it. Once again the audio industry is indulging in a numbers game without amy practical meaning viz. 1970's mass market amps and what was called "specmanship". BTW, I have seen reference to 32 bit audio. Huh.
Also you can't get 144db signal to noise in a recording studio. The best dacs no matter what they say do only 18 to 20 bits
I'll take 20/96K over 24/48K any day.
Bits 21 through 24 don't do much for me.
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