Re: Real-time sound cyphering algorithm

David Eather wrote:
> Strange. The signal in (acoustic intensity) is measured in dB(spl) -
and it
> is, and the background noise is also measured in dB(spl) and it is. ????
> Sound volume (acoustic intensity - the signal discussed here) is
measured in
> terms of pressure. I did not make it so.

And 40dB is a factor of 10,000 to one in power, just as I and
others have been telling you, and you cannot stop it from being
so. Your personal refusal to consider power is not going to make
it go away, make your system any more efficient, nor make other
people's statements about power wrong or irrelevant.

> I just point out that Wiki, Britannica etc agree with me. I'm sorry.

Not on the points at issue they don't. This Britannica
explanation is terrible, but it certainly doesn't agree with
you:

     http://www.britannica.com/ebc/article?tocId=9362398&query=decibel&ct=

The Wikipedia explanation of decibels:

     http://en.wikipedia.org/wiki/Decibel

Agrees with my explanation in:

     <7SHme.307$IE7.261@newssvr21.news.prodigy.com>
     http://groups-beta.google.com/group/sci.crypt/msg/19d49cbcc14f8c50

-- 
--Bryan