Audio processing device, system, use and method
AssigneeOticon A/S
InventorMichael Syskind Pedersen
Life of this patent
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Abstract
An audio processing device includes a) an input unit for converting a time domain input signal to a number NI of input frequency bands and b) an output unit for converting a number NO of output frequency bands to a time domain output signal. A signal processing unit processes the input signal in a number NP of processing channels, smaller than the number NI of input frequency bands. A frequency band allocation unit allocates input frequency bands to processing channels. A frequency band redistribution unit redistributes processing channels to output frequency bands, and a control unit dynamically controls the allocation of input frequency bands to processing channels and the redistribution of processing channels to output frequency bands.
Claims31
An audio processing device, comprising:
- a) an input unit for converting a time domain input signal to a number NI of input frequency bands;
- b) an output unit for converting a number NO of output frequency bands to a time domain output signal;
- c) a signal processing unit adapted to process the input frequency bands in a number NP of processing channels, the number NP of processing channels being smaller than the number NI of input frequency bands;
- d) a frequency band allocation unit for allocating the input frequency bands to the processing channels;
- e) a frequency band redistribution unit for redistributing the processing channels to the output frequency bands;
- and
- f) a control unit for dynamically controlling the allocation of the input frequency bands to the processing channels and the redistribution of the processing channels to the output frequency bands.
A method of processing an input audio signal, comprising:
- a) providing the input signal in a number NI of input frequency bands;
- b) allocating the number NI of input frequency bands to a number NP of processing channels, each of the NP processing channels carrying a channel input signal, the number NP of processing channels being smaller than the number NI of input frequency bands;
- c) processing the number NP of channel input signals and providing a number NP of channel output signals;
- d) redistributing the number NP of processing channels to a number NO of output frequency bands, wherein
- the allocation of the input frequency bands to the processing channels and the redistribution of the processing channels to the output frequency bands are dynamically controlled.
Dependencies are inferred from the claim text.