Patent ID: 6816597
Filing Date: 2004-11-09
Classification: H04R,H04S

Abstract:
A pseudo stereophonic device for producing a pseudo stereophonic signal from a monophonic signal, comprising:m delay devices connected in series and gradually delaying an input signal S; m FIR digital filters for respectively subjecting output signals Sk (k=1, 2, . . . m) of the delay devices to filter processing; and an operating circuit for executing, letting Yk (k=1, 2, . . . m) be outputs of the respective FIR digital filters, an operation expressed by the following equation (a), to produce pseudo stereophonic signals LOUT and ROUT: LOUT=Y1+&Sum;k=2m&it;â€ƒ&it;Yk&it;&NewLine;&it;ROUT=Y1-&Sum;k=2m&it;â€ƒ&it;Yk(a)wherein m is an integer greater than or equal to 2.