Re: [ARSCLIST] Dynamic-frequency Range

[David Seubert <seubert@xxxxxxxxxxxxxxxx>]

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.

David Seubert
UCSB

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.