sweetmusic
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I was watching Amir's excellent (and long video about how Harman and other sound engineers determine objective and subjective sound quality. I'm pulling out my question to a separate thread because it's a different topic.
My question: what causes information *loss* from speakers, specifically?
Thinking about the frequency response curve and spinorama: if there are non-linearities, or dips and peaks, they can in theory be corrected, by equalization or by our brains by getting used to the deviations. No information is lost.
A bookshelf speaker that doesn't reproduce any sound below 45 Hz has lost all the low frequency information. It can't be recovered, though to a certain extent we might hear overtones and mentally fill in what the fundamental tones might be.
Similarly, distortion and noise actually cause information loss. It can't be recovered with fancy EQ, or by our brains.
What else besides limited frequency range, distortion and noise can cause information loss?
My question: what causes information *loss* from speakers, specifically?
Thinking about the frequency response curve and spinorama: if there are non-linearities, or dips and peaks, they can in theory be corrected, by equalization or by our brains by getting used to the deviations. No information is lost.
A bookshelf speaker that doesn't reproduce any sound below 45 Hz has lost all the low frequency information. It can't be recovered, though to a certain extent we might hear overtones and mentally fill in what the fundamental tones might be.
Similarly, distortion and noise actually cause information loss. It can't be recovered with fancy EQ, or by our brains.
What else besides limited frequency range, distortion and noise can cause information loss?