rzdz@fluke.UUCP (Richard Chinn) (09/26/83)
The September meeting of the Pacific Northwest chapter of the Audio
Engineering Society (AES) will take place on Thursday, September 29 at 7:30
pm. This meeting will take place at Seattle University, Lemieux library
auditorium. This month's topic is:
Digital vs Analog recording shootout.
We will compare a high-quality digital and analog recording of the same work
to ascertain differences (if any) between the two recording systems. The
digital recording was made on a Sony PCM-F1 and the analog recording was
made on a NAGRA T audio (15 ips, no noise reduction). The same pair of
microphones (Neumann KM-83) and microphone preamps were used, driving the
paralleled line inputs of both recorders.
The musical performance is by the Seattle Youth Symphony, in the Seattle
Center Opera House.
Please contact me (Rick Chinn/rzdz (206) 356-5232) for directions if you are
interested. All interested folks are invited, AES members or not.thomas@utah-gr.UUCP (Spencer W. Thomas) (10/20/83)
Yes, but (personal opinion, backed by some facts) the Sony recorders generally s*ck - the ones I've seen had terrible crossover distortion because of poorly adjusted DACs. Added about 20dB of noise! =Spencer
jj@rabbit.UUCP (10/24/83)
I have to differ with the utah-gr person (I forget the login ID) about Sony PCM-1 units. I've used two units, and both had an SNR of greater than 90dB, except for the area between 17 and 20 kHz, where the anti-aliasing filters were letting through a bit (70dB worst case at 19.5K or so) of alaising. <Lest someone argue that the high frequency dynamic range is reduced, I will point out that the alaising, as one would expect, is proportional to the signal, thus having no effect on the dynamic range of the recorder. At levels more than 25 dB down from peak, the worst aliasing was below our instrument resolution and also below the PCM-1's quantizing level. > Personally, I would return a unit with only 70dB SNR across it's entire frequency range. The opinions in this article do not represent the opinions of any one or anything other than the author. They are not to be considered a review, endorsement, technical evaluation, or even advice. -- O o From the pyrolagnic keyboard of ~ rabbit!jj -v-v- \^_^/ (pyrolagnic- from pyro<=>fire and lagnic<=>eating.)