Adaptive dynamic range control
AssigneeQUALCOMM Incorporated
InventorsChong U. Lee, David Jonathan Julian, Harinath Garudadri, Somdeb Majumdar
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Abstract
Apparatus and method for processing signals. A sigma-delta modulator is used. An adaptive dynamic range controller is configured to adaptively adjust the dynamic range of a signal output from the sigma-delta modulator.
Claims107
An apparatus for processing signals, comprising:
- a sigma-delta modulator;
- and
- an adaptive dynamic range controller configured to adaptively adjust the dynamic range of a signal output from the sigma-delta modulator.
An apparatus configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the apparatus comprising:
- a filter;
- and
- an adaptive dynamic range controller configured to produce an output comprising the received signal with its dynamic range inversely adjusted and provide the output to the filter.
An apparatus for processing signals, comprising:
- a sigma-delta modulator;
- and
- means for adaptively adjusting the dynamic range of a signal output from the sigma-delta modulator
An apparatus configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the apparatus comprising:
- means for processing the received signal to produce an output comprising the received signal with its dynamic range inversely adjusted;
- and
- means for filtering the output.
A method for processing signals, comprising:
- passing a signal through a sigma-delta modulator;
- and
- adaptively adjusting the dynamic range of the signal output from the sigma-delta modulator.
A method to process a signal received from an output of a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the method comprising:
- processing the received signal to produce an output comprising the received signal with its dynamic range inversely adjusted;
- and
- filtering the output.
A. computer-program product for processing signals, comprising:
- a machine-readable medium comprising instructions executable by a processing system, the instructions comprising code for:
- passing a signal from a sigma-delta modulator;
- and
- adaptively adjusting the dynamic range of the signal output from the sigma-delta modulator.
A computer-program product for processing signals comprising:
- a machine-readable medium comprising instructions executable by a processing system configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the instructions comprising code for:
- processing the received signal to produce an output comprising the received signal with its dynamic range inversely adjusted;
- and
- filtering the output.
An apparatus for processing signals, comprising:
- a filter configured to receive an input signal and a scaled signal and to generate a filtered signal;
- a quantizer configured to generate a quantized signal based on the filtered signal;
- and
- an adaptive dynamic range controller configured to generate the scaled signal based on the quantized signal.
An apparatus configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the apparatus comprising:
- an adaptive dynamic range controller configured to receive the signal from the sigma-delta modulator and generate a scaled signal;
- and
- a filter configured to receive the scaled signal.
An apparatus for processing signals, comprising:
- means for filtering an input signal based on a scaled signal to generate a filtered signal;
- means for generating a quantized signal based on the filtered signal;
- and
- means for generating the scaled signal based on the quantized signal.
An apparatus configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the apparatus comprising:
- means for generating a scaled signal based on the received signal output from the sigma-delta modulator;
- and
- means for filtering the scaled signal.
A method for processing signals, comprising:
- filtering an input signal based on a scaled signal to generate a filtered signal;
- generating a quantized signal based on the filtered signal;
- and
- generating the scaled signal based on the quantized signal.
A method for processing a signal received from an output of a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the method comprising:
- generating a scaled signal based on the received signal output from the sigma-delta modulator;
- and
- filtering the scaled signal.
A computer-program product for processing signals, comprising:
- a machine-readable medium comprising instructions executable by a processing system, the instructions comprising code for:
- filtering an input signal based on a scaled signal to generate a filtered signal;
- generating a quantized signal based on the filtered signal;
- and
- generating the scaled signal based on the quantized signal.
A computer-program product for processing signals, comprising:
- a machine-readable medium comprising instructions executable by a processing system configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the instructions comprising code for:
- generating scaled signal based on the received signal output from the sigma-delta modulator;
- and
- filtering the scaled signal.
A headset, comprising:
- a signal source configured to generate a signal;
- a sigma-delta modulator configured to receive the signal from the signal source and produce an output;
- and
- adaptive dynamic range controller configured to adaptively adjust the dynamic range of the output from the sigma-delta modulator.
A headset configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the handset comprising:
- a signal load;
- an adaptive dynamic range controller configured to produce an output comprising the received signal with its dynamic range inversely adjusted;
- and
- a filter configured to filter the output from the adaptive dynamic range controller and provide the filtered output to the signal load.
A headset, comprising:
- a signal source configured to generate a signal;
- a filter configured to receive the signal from the signal source and a scaled signal and to generate a filtered signal;
- a quantizer configured to generate a quantized signal based on the filtered signal;
- and
- an adaptive dynamic range controller configured to generate the scaled signal based on the quantized signal.
A headset configured to receive a signal output from a sigma-delta modulator, wherein the dynamic range of the received signal has been adaptively adjusted, the handset comprising:
- an adaptive dynamic range controller configured to receive the signal from the sigma-delta modulator and generate a scaled signal;
- a filter configured to receive the scaled signal and generate a filtered signal;
- and
- a signal load configured to receive the filtered signal.
Dependencies are inferred from the claim text.