[hpsdr] libusb, Vista/Win 7 and Kiss now working

[Lyle Johnson]

>> The speech processor is based on an idea from Peter G3PLX and clips the 
>> microphone signal without adding harmonics - it appears to be very 
>> effective.  By processing  the microphone signal rather than an SSB signal 
>> it can be used on all speech modes, not just SSB.

See the latest RadCom (Jan 2010 issue) pages 76 and 77 for Peter's 
article and description.

Essentially, it is applying AGC using I and Q to implement a limiter.

I haven't seen Phil's code, but I am pretty sure this is the reference, 
given the citation and the timing :-)

73,

Lyle KK7P

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