SURROUND COMPONENT GENERATOR

摘要

Provided is a surround component generation device capable of generating surround components for multichannel reproduction based on two-channel audio signals with a small amount of arithmetic operation. The surround component generation device includes: multipliers for changing amplitudes of audio input signals; subtractors for subtracting outputs of the multipliers from the input signals; coefficient updaters for updating coefficients of the multipliers; subtractors for generating surround components based on the input signals and the output signals of the multipliers; output switches for switching and outputting the output signals of the subtractors; and output switching controllers for controlling the output switches. Each of the coefficient updaters updates the coefficient of the multiplier based on the output of the subtractor, and each of the output switching controllers switches the output switch based on the coefficient updated by the coefficient updater.

主权项

1. A surround component generation device for generating a surround component based on each of two-channel audio signals of L and R signals, comprising:
multipliers for changing amplitudes of the two-channel audio signals; and coefficient updaters for updating coefficients of the multipliers based on a difference between the L and R signals, wherein the surround component generation device changes the surround component to be generated depending on each of the coefficients of the multipliers.