The lower octaves of a piano, more than the highs. I like to use piano music as part of my demo of audio gear. If the piano sounds right, the other sounds usually fall in place pretty well.
tough sounds to reproduce ???
I was listening to a disc that had a pretty good recording of thunder on it just a bit ago. That brought to mind several other "noises" or "sounds" that are pretty tough to reproduce. Obviously, some of this would be recording dependent, such as applause ( clapping ) at a live event. Anybody have any good tests on specific discs that we can compare notes about ? Sean
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