[BC] FM Stereo invention

[DHultsman5@aol.com]

In a message dated 2/19/2007 2:15:14 PM Central Standard Time,  
Robertm at broadcast.net writes:

> the  
>deficiency of the switching menthod becomes immediately apparent when  there 
is a 
>large difference between the channels, such as one channel  being silent. 
The 
>audio is chopped on/off at 38Khz, at nearly a 50%  duty cycle. (Perfect 
switches 
>would make it 50%) That's gotta add  distortion along the way. Someone else 
>mentioned the harmonics, which  can intermod with subcarriers (if present) 
or do 
>other nasty IMD  tricks.
>
>While the switching method may be *effective*, I don't  think it's the best 
>way. Someone else pointed out the decoder flaws,  and again, those are good 
>points... and may, in reality, negate the  effects of the "cheaper" 
switching  method.
>
>Willie...
>  



********************************************************
 
Some of the best specifications on stereo generators were the Rood and  other 
Matrix type stereo generators from Europe and Australia.
 
Dave
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