Vocoder Design Questions, thanks for input

[KA4HJH]

>>Another solution that was patented by Harald Bode in the 70's, is to just
>>mix the high frequency band of the excitation source to the output
>>amplifier. It's a lot simpler (a trimpot and a couple resistors) than
>>building voiced/unvoiced detectors, and is supposed to (according to the
>>article) increase intelligability immensely.
>
>...curiously enough, adding  ALL the excitation source to the output increases
> the intelligability even more immensely :)
>my own suggestion is to provide lyric sheets to the audience.

Adding broadband noise to speech below the threshold of audibility makes it
intelligible. I heard a demonstration of this on a radio show, and it
really does work. Of course, it was rather noisy...

Terry Bowman, KA4HJH
"The Mac Doctor"