Selector and amplifier device therefor

摘要

An amplifier device includes a plurality of input terminals for receiving input signals (e.g. audio signals), a main switch, which switches over the input terminals so as to select one input terminal, an analyzer, which analyzes the input signals at respective timings so as to determine whether or not each of the input signals corresponds to a playback signal, a storage for storing a plurality of determination results in connection with the input terminals, a controller for controlling the main switch to select the input terminal whose input signal is newly determined as the playback signal, and an amplifier for amplifying the input signal of the selected input terminal. The analyzer performs frequency analysis on the input signals so as to determine the input signal including a specific frequency component having a high intensity as noise not forming the playback signal.

主权项

1. An amplifier device comprising:
a selector unit; and a remote controller that wirelessly sends an operation signal representing user's operation to the selector unit, wherein the remote controller includes
an operation part that receives the user's operation to generate the operation signal,a transmitter that wirelessly transmits the operation signal to the selector unit, anda display part that displays a predetermined content in response to a control signal from the selector unit, and wherein the selector unit includes
an input part including a plurality of input terminals for receiving signals output from an external device,a selector that selectively outputs one of the received signals received at the plurality of input terminals,an analyzer that analyzes the received signal of each input terminal at a predetermined timing so as to determine whether or not the received signal is a playback signal,a storage that stores a determination result determined by the analyzer for each input terminal, anda controller that compares a new determination result, currently determined by the analyzer, with the stored content of the storage, thus controlling the selector to select the input terminal receiving a newly determined playback signal.