Patent ID: 8958564
Filing Date: 2015-02-17
Classification: H04S

Abstract:
1. An apparatus for transforming a monophonic input signal into pseudo-stereophonic signals with a variable degree of correlation between a first signal and a second signal of the pseudo-stereophonic signals, comprising either: a first circuit having an MS matrix for pseudo-stereo conversion and having a first panoramic potentiometer and a second panoramic potentiometer, wherein the MS matrix transforms an MS signal into an LR signal, wherein each panoramic potentiometer has an input, a first output and a second output, wherein the input of the first panoramic potentiometer is connected downstream to a first output of the MS matrix, wherein the input of a second panoramic potentiometer is connected to a second output of the MS matrix, wherein the first output of the first panoramic potentiometer is connected to the first output of the second panoramic potentiometer, and wherein the second output of the first panoramic potentiometer is connected to the second output of the second panoramic potentiometer; or: a second circuit for pseudo-stereo conversion having an MS matrix which transforms an MS signal into an LR signal and an amplifier, connected upstream to one input of the MS matrix, for amplifying the one input signal for the MS matrix with a gain smaller than one; or: a third circuit having a modified MS matrix which transforms an MS signal into an LR signal and which contains an adder for forming a composite signal from a first input signal amplified by the factor (2+λ−ρ) and a second input signal amplified by the factor (λ+ρ) and which comprises a subtractor for forming a difference signal from the first input signal amplified by the factor (2−λ+ρ) minus the second input signal amplified by the factor (λ+ρ).