By Tadeusz Wysocki, Michael Darnell, Bahram Honary
Complex sign Processing for communique structures involves 20 contributions from researchers and experts.The first team of chapters offers with the audio and video processing for communications purposes, together with subject matters starting from multimedia content material supply over the net, in the course of the speech processing and popularity to reputation of non-speech sounds that may be attributed to the encompassing environment.The booklet additionally comprises sections on functions of blunders keep watch over coding, details concept, and electronic sign processing for verbal exchange structures like modulation, software-defined radio, and channel estimation.Advanced sign Processing for verbal exchange platforms is written for researchers engaged on communique structures and sign processing, in addition to telecommunications execs.
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Additional info for Advanced Signal Processing for Communication Systems (The Springer International Series in Engineering and Computer Science)
2 Temporal Post-masking The masking threshold for temporal post-masking decays approximately exponentially following each pulse, or neural firing. A simple approximation to this masking threshold, introduced in , is where is the ith of M= 21 simultaneous masked critical band pulse train signals, and is the discrete time sample index. The 26 Chapter 2 time constants were determined empirically by listening to the quality of the reconstructed speech, and values between and were chosen. All pulses with amplitudes less than the masking threshold were discarded.
This process results in a series of critical band pulse trains, where the pulses retain the amplitudes of the critical band signals from which they were derived. In recognition of the fact that lower power components of the critical band signals are rendered inaudible by the presence of larger power components in neighboring critical bands, a simultaneous masking model is employed. Weak signal components become inaudible by the presence of stronger signal components in the same critical band that precede or follow 2.
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Advanced Signal Processing for Communication Systems (The Springer International Series in Engineering and Computer Science) by Tadeusz Wysocki, Michael Darnell, Bahram Honary