... the noise power spectrum, PXY(f) is the cross-power spectrum of the channel input and output signals, and H(f) is the frequency response of the channel. Note that in the absence of noise, ... recorders, as illustrated in Figure 15.5, had a bandwidth of about 200 Hz to 4 kHz. However, the limited bandwidth, or even the additive noise or scratch noise pulses, are not considered as the major ... input is a random signal. Standard linear prediction analysis can be viewed as a blind deconvolution method, because both the channel response and the channel input are unknown, and the only...