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 "we do not overly restrict the subject matter on the list, and we encourage postings on a wide range of amateur radio related topics" List Guidelines <http://www.elecraft.com/elecraft_list_guidelines.htm> ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
