Mixing system
AssigneeHarman Becker Automotive Systems GmbH
InventorsMarkus Christoph, Florian Wolf, Peter Perzlmaier
Life of this patent
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Abstract
A system automatically mixes a first audio signal and a second audio signal. The system includes a correlator that determines whether the first signal and the second signal are correlated according to a predetermined correlation criterion. If the predetermined correlation criterion is fulfilled, the correlator determines whether the first and the second signal are delayed. A delay circuit compensates for the delay between the first signal and the second signal. A mixer mixes the first signal and the second signal that includes a compensation.
Claims20
A method that automatically mixes a first audio signal and a second audio signal;
- comprising:
- determining whether the first signal and the second signal are correlated according to a predetermined correlation criterion, and if the predetermined correlation criterion is fulfilled, determining whether the first and the second signal are delayed with respect to each other;
- compensating for a delay of the first signal or the second signal;
- and
- mixing the first signal and the second signal, where the first signal or second signal includes a compensation.
A computer program product comprising a computer storage medium retaining computer-executable instructions that comprises:
- determining whether the first signal and the second signal are correlated according to a predetermined correlation criterion, and if the predetermined correlation criterion is fulfilled, determining whether the first and the second signal are delayed with respect to each other by:
- selectively passing portions of the reference signal through an adaptive filter configured such that the difference between the reference signal and the comparative signal is minimized according to the predetermined criterion;
- determining a maximum value of the absolute values of the filter coefficients of the adaptive filter;
- determining whether the filter coefficient position of the maximum value and the positions of a predetermined number of previously determined maximum values deviate at most by a predetermined threshold value from each other;
- and
- where the first and the second signal are designated to be correlated when the positions of the maximum values deviate at most by the predetermined threshold value from each other;
- compensating for a delay of the first signal or the second signal;
- mixing the first signal and the second signal.
A system that automatically mixes a first audio signal and a second audio signal;
- comprising:
- a correlator that determines whether the first signal and the second signal are correlated according to a predetermined correlation criterion, and if the predetermined correlation criterion is fulfilled, determining whether the first and the second signal are delayed with respect to each other;
- a delay circuit that compensates for the delay of the first signal or the second signal;
- and
- a mixer that mixes the first signal and the second signal, where the first signal or second signal includes a temporal compensation.
Dependencies are inferred from the claim text.