[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [ARSCLIST] Dynamic-frequency Range
Echoing what Aaron has said, when we were doing initial testing before
starting to digitize our cylinders we did a lot of listening tests with
cylinders of 'cellos and such run through various high-pass filters. We
found that there wasn't much of anything but rumble and noise below
200Hz. We ended up using a high-pass filter to get rid of a lot of the
junk below about 170 Hz.
You've seen this image if you were at ARSC in Seattle, but this gives
you a rough idea of the frequency response of an Edison Blue Amberol:
http://nico.library.ucsb.edu/BA2203.gif. It doesn't really help with the
high end, but gives you a pretty clear picture of what the lower end of
the range was.
Aaron Z Snyder wrote:
Edison Diamond Disc recordings in general had very little, if anything at
all, below 200 Hz. The upper end in general petered out at about 4 kHz.
However, I've seen one acoustical Diamond Disk made in 1927 (Edison held off
until mid-to-late 1927 before going electrical) which has an upper end at an
astonishing 6 kHz.