Patent ID: 9576344
Date: 2017-02-21
CPC Classifications: G06T

Claim:
1. A noise removal system comprising: an input signal branching off into at least a first channel and a second channel at a branch unit, the input signal of the first channel being stored in a storage device; a memory that stores a set of instructions; and at least one CPU (Central Processing Unit) configured to execute the set of instructions to operate as: a first frequency transform processing unit which transforms the input signal from the storage device into a frequency-domain signal to output a first signal; a second frequency transform processing unit which transforms the input signal, from the second channel into a frequency-domain signal to output a second signal; a third frequency transform processing unit which transforms the second signal from the second frequency transform processing unit into a frequency-domain signal and outputs a third signal and a fourth signal in a first frequency band and a second frequency band; a first inverse frequency transform processing unit; wherein the third and fourth signals are inputted directly or indirectly to a second inverse frequency transform processing unit, and the second inverse frequency transform processing unit outputs a third transformed signal produced through inverse frequency transform on the inputted signals; and at least one of a first coring processing unit and a second coring processing unit, wherein the first signal from the first frequency transform processing unit and the third transformed signal from the second inverse frequency transform processing unit are inputted directly or indirectly to the first inverse frequency transform processing unit, and the first inverse frequency transform processing unit outputs a signal produced through inverse frequency transform performed on the inputted signals, the first coring processing unit outputs a first transformed signal produced through noise removal on the first signal from the first frequency transform processing unit, the first transformed signal from the first coring processing unit being inputted as indirect input of the first signal to the first inverse frequency transform processing unit, and the second coring processing unit outputs a second transformed signal produced through noise removal on the third signal from the third frequency transform processing unit, the second transformed signal from the second coring processing unit being inputted as an indirect input of the third signal to the second inverse frequency transform processing unit.