Signal processor

Abstract

A signal processor which enables a user to learn user's operation before knowing it and to carry out a processing optimal to the user. An operation signal supplied according to the user's operation is monitored in a learning section, so that it is judged whether the operation is available for learning. When the operation signal is al learning-oriented operation signal, the learning section learns a correction rule for correcting an input signal on the basis of the learning-oriented operating signal. The correcting section corrects an input signal corrected on the basis of the correction rule obtained from learning and outputs the corrected signal as an output signal. This invention is applicable to a noise reduction circuit.

Description

technical field [0001] The present invention relates to a signal processing device, and more particularly, to a signal processing device that changes the content of processing or the structure of processing, for example, by an operation made by a user, so as to perform processing most suitable for the user. Background technique [0002] For example, with a conventional NR (Noise Reduction) circuit, in a case where a user operates an adjustment knob therein and places it at a certain position, noise cancellation processing corresponding to the position of the knob is performed. [0003] Now, the S / N (Signal-to-Noise Ratio) and frequency characteristics etc. of the signal input to the NR circuit are not always constant, but it is common for these characteristics to change. In the case where the S / N and frequency characteristics etc. of the signal input to the NR circuit are changed, the signal input to the NR circuit may not necessarily be properly processed in the noise cance...

AI Technical Summary

Problems solved by technology

In the case where the S / N and frequency characteristics etc. of the signal input to the NR circuit are changed, the signal input to the NR circuit may not necessarily be properly processed in the noise cancel processing corresponding to the position where the user places the knob, therefore, It is cumbersome for the user to need to operate the knob frequently in order to get proper noise cancellation processing for him / herself

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