sections 143 and 144 is synthesized in bands with the signals at the frequencies f n 1 to fm and is transmitted to inverted fast fourier transform called ifft sections 145 and 146 as signals at the frequency f 1 to fm the frequency axis signals are inversely converted to time axis signals and are output from terminals 147 and 148 as rch and lch signals having described the construction for wind noise reduction in two lch and rch channels the invention is applicable to multi channels including three or more channels with reference to fig1 a three channel noise reducing apparatus according to a fifth embodiment of the invention will be described first of all rch center channel called cch hereinafter and lch signals are input from input terminals 180 181 and 182 and are divided in bands into a wind noise band and a non wind noise band by an hpf 183 and an lpf 186 an hpf 184 and an lpf 187 and an hpf 185 and an lpf 188 respectively the wind noise band signals rch cch and lch from the lpfs are input to an sw 192 and a level value detecting determining section 191 the outputs from the lpfs 186 187 and 188 are also input to an adder 189 and are all added therein then the result undergoes multiplication processing in a u2153 multiplier 190 and is averaged therein then the result is input as a l r.