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Again, it's not so much about getting frequencies above 20K into our
loopers, rather it's
about increasing the quality of sounds well within our hearing. If the
frequencies at 20K are
only allotted 2 samples per wave cycle, then an octave down only gets 4
samples, 2 octaves down
only gets 8 samples, and 3 octaves down which is right around 2.5K only
gets 16 samples per wave.
Sampling at 192 would offer us 64 samples at 2.5K. I don't know if my
math is correct, but this
is how the numbers seem to be crunching. Also, if my crunching is
correct, I'm not sure how
perceivable this higher sampling rate actually is. Perhaps someone on
this list has experience
with these things?
Stephen
R.Chris Murphy wrote:
True. We can absolutely perceive below 20Hz, I live in LA, and we sure
as hell feel earthquakes! I am actually in the camp that believes that
there is important stuff happening above 20k. There were some test
(that I was not involved with) where they switched between sine and
square waves of about 15K, the difference between these two would be
the addition of an additional frequency well above 20K and the subjects
could here the difference. Scientist are not sure why this is the
case. It could be bone conduction (basically our skull shaking) or
intermodulation, meaning the high frequency changes the lower one or
maybe we can just actually hear that high stuff some how.
But how that applies to a looping instrument, I am not sure there is
great value in a super high sample rate looper at this point. If you
have any other digital device in your signal chain, you will have
chopped off all that high end stuff first time you hit a digital box or
foot pedal.
______________________
Ronan Chris Murphy
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