Audio processing arrangement with multiple sources
AssigneeKoninklijke Philips Electronics N.V.
InventorsHarm J. W. Belt, Cornelis P. Janse
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Abstract
In an audio processing arrangement (2) input signals from a plurality of input sources (4,6) are weighted by weighting factors x and y using weighting elements (10, 12). The weighted input signals are combined to a combined signal by an adder (18). The output signal of the adder (18) constitutes the output of the audio processing arrangement. In order to pronounce the signal with the strongest signal, the weighting coefficients (x,y) are controlled to maximize the output signal of the adder (18) under the constraint that the sum of the squares of the weighting coefficients is equal to a constant.
Claims11
An audio arrangement that utilizes an energy transfer function for delay compensation, said arrangement comprising:
- a plurality of audio sources generating a plurality of input audio signals;
- a processor comprising a scaling means for weighting the plurality of input signals and deriving a plurality of processed audio signals from the plurality of input audio signals without delay values;
- a combiner that derives a combined audio signal from the plurality of processed audio signals;
- and
- a controller that causes the processor to maximize a power measure of the combined audio signal, wherein the controller is arranged to limit a combined power gain measure of the processed audio signals to a predetermined value without measuring an energy transfer at each site where one respective audio source of the plurality of audio sources receives the input audio signals.
An audio signal processing arrangement that utilizes an energy transfer function for delay compensation, said arrangement comprising a plurality of inputs for receiving input audio signals, processing means for deriving processed audio signals including scaling means for scaling the input audio signals without delay values, the audio processing arrangement comprising combining means for deriving a combined audio signal from the processed audio signals, wherein the audio processing arrangement comprises a control means for controlling the processing means in order to maximize a power measure of the combined audio signal, and in that the control means are arranged for limiting a combined power gain measure of the processed audio signals to a predetermined value without measuring an energy transfer at each site where each respective one the plurality of audio sources receives the input audio signals.
An audio processing method that utilizes an energy transfer function for delay compensation, said method comprising:
- receiving a plurality of input audio signals from a plurality of audio sources;
- deriving processed audio signals from the input audio signals that are scaled without delay values;
- reducing reverberation by controlling the processing of the audio signals in order to maximize a power measure of a combined audio signal;
- and
- controlling the processing for limiting a combined power gain measure of the processed audio signals to a predetermined value without measuring an energy transfer at each site where one respective audio source of the plurality of audio sources receives the input audio signals.
Dependencies are inferred from the claim text.