Patent ID: 8538041

Claim:
An audio-video (AV) reproduction apparatus having a video output for driving a display means, and an audio output for driving one or more audio amplifying means, the apparatus further comprising: audio processing means for receiving a source audio signal, the audio processing means having frequency filtering means to selectively allow predefined frequency bands of the source audio signal to pass through said filtering means, control means for adapting filtering characteristics of the frequency filtering means in a time-varying manner, so as to repeatedly cycle through said predefined frequency bands and acquire a respective sampled energy level of the filtered audio signal for all of the bands in each cycle; and video processing means for receiving the sampled energy levels of the filtered audio signal, the video processing means adapted to generate a dynamic visual representation, for display on the display means, of a frequency spectrum of the source audio signal based on variation in the acquired sampled energy levels, the audio processing means being operable to perform a process of boosting one of the predefined frequency bands of the source audio signal while attenuating all remaining predefined frequency bands of the source audio signal such that a level of only a single predefined frequency band is increased at a time when levels of all remaining predefined frequency bands are decreased and to repeat said process for each of the other predefined frequency bands, in order to acquire each said sampled energy level, in which the number of predefined frequency bands is five (5) or more, in which the audio processing means boosts each of the predefined frequency bands of the source audio signal by a positive value of a predetermined amount while attenuating the respective remaining four or more predefined frequency bands of the source audio signal by a negative value of the same predetermined amount, and in which after initiation of the process for a first one of the predefined frequency bands, the audio processing means completes the process of boosting and attenuating regarding the first one of the predefined frequency bands and performs all repeats of the process for each of the other predefined frequency bands in an automatic manner without input from a user during such time.