Patent ID: 8565702

Claim:
A radio receiver, comprising: a radio frequency (RF) stage for converting an RF signal to a digital signal on a home-channel; a baseband processing stage for converting the digital signal to an audio signal; a speaker for outputting the audio signal; the baseband processing stage having an audio lineup with a plurality of audio shaping filters, the plurality of audio shaping filters being initialized with a training waveform, the training waveform being constructed upon return from a priority channel to the home-channel during a priority scan mode based on a sampled demodulated signal from the audio lineup and a home-channel configuration, the training waveform reducing a transient response at the plurality of audio shaping filters thereby suppressing an audio artifact from being presented at the speaker; and a rate change filter for converting a demodulated signal down to a lower sampling rate demodulated filtered signal and wherein the training waveform is constructed using samples taken from the demodulated filtered signal at the lower sampling rate.