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RE: real life has headroom...and lots of it.

One thing that may not be clear. The inability to hear sine waves at high frequencies does not imply the inability to benefit from extended high frequency response. Fifty years ago I could hear a 21 kHz sine wave, today it would be about 13 kHz in my best ear. However, I can still detect differences in sound quality when frequencies above 15 Khz are missing. I notice a loss of "air" with these recordings. Another way is on the dark side. Some recordings have noise at 15750 Hz caused by video interference. I can no longer hear this noise directly, but its presence imparts a grainy quality to these recordings. In some cases, filtering out is spike improves the sound quality.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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