[Elecraft] SSB transmit audio - Where's the punch?

[David Woolley (E.L)]

This (multiband compression) is essentially what digital hearing aids 
do. In their case, the aim is to get the dynamic range into the gap 
between the threshold of hearing and threshold of pain, both of which 
tend to converge towards each other in hearing loss.

One figure of merit for such aids is the number of compression channels.

Beyond this, modern hearing aids are essentially sophisticated DSP NR 
devices, in ham radio terms.

Top quote through list policy only.

Jim Brown wrote:

> early80s. One of the common techniques is to split the spectruminto
> multiple frequency bands and process each band separately, then combine
> them. This only works with full bandwidth audio (that is, 20-20,000 Hz);
> the bandwidth we transmit would fit into one of those individually
> processed bands.

-- 
David Woolley
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