Patent ID: 7440575

Claim:
A method, comprising: forming left and right channel signal paths in stereophonic processing of left and right channel input signals into left and right channel output signals suitable for stereophonic headphone listening, and forming at least one delay introducing a cross-talk signal path between the left and right channel signal paths, wherein the method further comprises forming a separate monophonic signal path in order to equalize a frequency spectrum of a monophonic component of the left and right channel output signals by at least extracting from the left and right channel input signals an at least substantially monophonic signal component contained in and common for both said left and right channel input signals, processing the monophonic signal component to obtain a processed monophonic signal component, wherein the processing includes adjustment of the gain of said monophonic signal component, and combining said processed monophonic signal component with at least one of the left and the right channel output signals.