Message from discussion Modulation Matters
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From: Herbert Blenner <a1ea...@verizon.net>
Subject: Re: Modulation Matters
Date: 8 Oct 2012 17:21:11 -0400
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On Oct 8, 12:11=A0am, Anthony Marsh <anthony.ma...@comcast.net> wrote:
> On 10/6/2012 9:05 PM, Herbert Blenner wrote:
> > On Oct 6, 4:48 pm, "John Fiorentino" <jefiorent...@optimum.net> wrote:
> >> Who cares about a c. v. Tony.
> >> Personally, I'm interested in the truth.
> >> That's the same crapola some threw around re: Steve Barber.
> >> If you want to discuss c. v.'s then NONE of the people involved in the
> >> acoustics fiasco, i.e., Barger, W&A had any excuses, did they?
> > I agree. BB&N and W&A had no excuse for their sophomoric use of the
> > same correction factor for frequency and time. These mistakes made by
> > BB&N and repeated by W&A would have embarrassed undergraduate
> > students.
> I can see that you are not a musician and have never had any practical
> experience with sound on tape. I am and I have. When you take any
> recorded sound on tape and play it at a slowed speed the frequency is
> LOWER and it takes LONGER to play it.
They correct the lower frequency by multiplying it by a number larger
than one. This is what BB&N did.
Source: BB&N - 8HSCA, 110
=93The tape-recording system was found to be about 5% slow, when the
time annotations were measured with a stopwatch (see Fig. 9).
Therefore, the apparent pitch of the tone would have a frequency of
(1.05) (420) =3D 441 Hz.=94
Likewise they should correct the longer playing time by multiplying it
by a number less than one. This is opposite of what BB&N did.
Source: BB&N - 8HSCA, 75
=93The time span between the onset of the first impulse pattern and the
onset of the fourth impulse pattern on the Channel 1 tape is 7.9 sec.
When corrected for the fact that the tape recorder was running about
5% too slowly, the real time span is 8.3 sec.=94
Thanks for corroborating my point that BB&N made the sophomoric error
by using the same correction factor for both frequency and time.