Golden Earring wrote: > Hi Wombat! > > My (obviously subjective) problem with square waves is "heard one, > you've heard 'em all". Hell, they don't even list the composers or > artists on these test discs anymore. >
That would have to be a joke, because you can't be serious. Friendly advice - add an appropriate emoticon. > > Solo piano is not *-that-* easy to reproduce because of a rapid initial > transient followed by a decay, both controlled by a combination of the > instrument and the performer.\ > That's yet another audiophile myth. Hearing: An Introduction to Psychological and Physiological Acoustics *5th Edition StanleyA.Gelfand Chapter 3 " Temporal summation deals with the relationship between stimulus duration and intensity when the time frame is less than about 1 s (see Chap. 9). It is most easily understood by example. Suppose a subjects threshold for a tone that lasts 200 ms happens to be 18 dB. Will the threshold remain at 18 dB when the same tone is presented for only 20 ms? It is found that when the 20-ms tone is used the threshold changes to 28 dB. (A similar trade-off is needed to maintain the stimulus at a constant loudness. This illustrates the general psychoacoustic observation that when a signal is shortened by a factor of 10 (e.g., from 200 to 20 ms), the signal level must be increased by as much as 10 dB to offset the decade decrease in duration. This relationship is understandably called a time-intensity trade. " IOW, if sound is 10 times shorter, it is up to twice as hard to hear. *This means that the leading edges of transients are masked due their short duration. When you get down to transients measured in microseconds, the masking is quite significant. ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=106914
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