Re: Where's the beating?FWD from AUDITORY


Subject: Re: Where's the beating?FWD from AUDITORY
From: Rick (ricknance@gmail.com)
Date: Sun Oct 09 2005 - 12:15:50 EDT


I'm confused.

If you can see a 1msec periodicity in the waveform, but no components
show in the spectrum, what's generating the signal into the spectrum
display?

r

On 10/9/05, Kevin Austin <kevin.austin@videotron.ca> wrote:
> >
> >Topics of the day:
> >
> > 1. two sine tones simultaneously within one critical band (3)
> >
> >----------------------------------------------------------------------
> >
> >Date: Sat, 8 Oct 2005 11:32:24 -0400
> >From: Bob Masta <audio@DAQARTA.COM>
> >Subject: Re: two sine tones simultaneously within one critical band
> >
> >Dear list:
> >
> >There is no question that the sum of two
> >sines can be expressed as the product
> >of two cosines of sum-and-difference frequencies,
> >as in:
....
> >.... Try 4000 and 5000. You will
> >see a 1 msec periodicity in the waveform, but you will not
> >see any component at 1000 Hz in the spectrum.
> >
> >Beats are really, truly "all in your head"!
> >
> >Best regards,
> >
> >Bob Masta
> >
> >audioATdaqartaDOTcom
> >
>



This archive was generated by hypermail 2b27 : Sat Dec 22 2007 - 01:46:12 EST