Asymmetric multi-channel audio dynamic range processing
AssigneeNuvoton Technology Corporation
InventorIttai Barkai
Life of this patent
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Abstract
A method for audio processing includes receiving multiple electrical signals to be transmitted in parallel via multiple respective audio channels. Multiple respective weights are assigned to the multiple electrical signals, wherein at least two of the weights differ from one another. An instantaneous gain is calculated, to be applied to the multiple electrical signals. The instantaneous gain depends on (i) instantaneous amplitudes of the multiple electrical signals, and (ii) the weights assigned to the multiple electrical signals. The instantaneous gain is applied to the multiple electrical signals, and the multiple electrical signals are transmitted via the multiple respective audio channels.
Claims12
A method for audio processing, comprising:
- receiving multiple electrical signals, to be transmitted in parallel via multiple respective audio channels;
- assigning multiple respective weights to the multiple electrical signals, wherein at least two of the weights differ from one another;
- calculating an instantaneous gain to be applied to the multiple electrical signals, wherein the instantaneous gain depends on (i) instantaneous amplitudes of the multiple electrical signals, and (ii) the weights assigned to the multiple electrical signals;
- and
- applying the instantaneous gain to the multiple electrical signals, and transmitting the multiple electrical signals via the multiple respective audio channels.
An apparatus for audio processing, comprising:
- processing circuitry, configured to:
- receive multiple electrical signals that are to be transmitted in parallel via multiple respective audio channels;
- assign multiple respective weights to the multiple electrical signals, wherein at least two of the weights differ from one another;
- and
- calculate an instantaneous gain to be applied to the multiple electrical signals, wherein the instantaneous gain depends on (i) instantaneous amplitudes of the multiple electrical signals, and (ii) the weights assigned to the multiple electrical signals;
- and
- multiple gain stages, which are configured to apply the instantaneous gain to the multiple electrical signals, and to transmit the multiple signals via the multiple respective audio channels.
Dependencies are inferred from the claim text.