Figure 3 shows the output spectrum with and without the adaptive canceler
He is in the market for some sort of primary rate echo canceler
, but in the meantime says a solution can be found in the intelligence of a smart multiplexer, such as the IDNX from Network Equipment Technologies.
A digital three-pulse canceler
and 16-point FFT follow the A/D converter.
Duttweiler, "Proportionate normalized least-mean-squares adaptation in echo cancelers
," IEEE Transactions on Speech and Audio Processing, vol.
"It used to be that echo cancelers
wouldn't really understand the complexities of musical sound and would create weird howling sounds and strange artifacts of sounds.
Electronic scan: An active electronic scan antenna -- that is, an antenna consisting of transmit-receive modules -- promises more effective radiated power for a given aperture size, facilitates implementing a large number of sidelobe cancelers
and makes possible implementation of algorithms using variable dwell times.|3~
Only decades of monopoly power in (still) relatively secure regional markets could have turned an economic absurdity into a universally believed truth--in this case, the alleged truism that good reporting gets done by people who can follow their noses while being shielded from pressure by advertisers, irate subscription cancelers
, and the like.