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Navigation Label Technical Details Crosstalk compensation
Crosstalk compensation
When artificial head recordings are played back through the speakers of a stereo system, the required sharp separation between the left and right channels is missing. This so-called crosstalk is amplified when the speakers are placed close together, as in a television.
Crosstalk compensation further separates the two stereo channels. The portion of the left signal that crosses over to the right ear is canceled. This is achieved by post-processing the original signal, in which a compensation signal in antiphase cancels out the crosstalk. This cancellation signal, in turn, then crosses over to the left ear. This is compensated for by an additional signal, which also crosses over to the other ear. After five compensation steps, the remaining crosstalk signal is no longer audible.
The idea for this process dates back to the 1960s. However, it is only today's digital signal processing technology that enables a qualitatively satisfactory solution. The Institute of Technical Acoustics at RWTH Aachen University and other research groups worldwide are currently working on this system, which can be used for all stereophonic processes, because it can replace more complex surround sound processes.
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