View single post by joecioppi
 Posted: Sep 14th, 2009 02:59 PM
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joecioppi



Joined: Sep 22nd, 2008
Location: Doylestown, Pennsylvania USA
Posts: 130
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 When radio is used, the noise comes from the atmosphere. Static and radio bursts from lightening, etc. The Spiricom transmitter is modulated by tones and is received with the atmospheric radio noise by the receiver. I am suggesting that the noise and the modulated signals have to be approximately the same strength to get the desired mixing in the receiver.

 Direct radio method uses the detected sounds from atmospheric noise and the operators ear  and mind to detect the voices imbedded in the noise. The computer sound processing programs like Audition can be used with recordings of this noise to filter voices to make them easwier to understand.

In the voice synthesizer unit the noise is generated by a semiconductor junction and converted to data used by a synthesizer chip to generate artificial voice. The random nature of the data contains the spirit messages and the noise source and data is not audible. The noise from open frequencies on a service band VHF receiver has also been used  with the synth voice chip.

Joe