System and method for adjusting an audio signal
First Claim
1. A method of adjusting a volume level for an audio signal for a communication device to comply with a quality threshold, said method comprising:
- monitoring for an increase in said volume level;
upon determining that implementing said increase in said volume level would produce an output that would exceed said quality thresholdprocessing a digitized signal value of said audio signal to produce a first output signal value for said audio signal utilizing a digital signal processing (DSP) device in said communication device, a processing filter defined in said digital signal processing device, a first set of adjustment parameters and said digitized signal value; and
upon determining that implementing said increase in said volume level would not exceed said quality thresholdprocessing said digitized signal value to produce a second output signal value for said audio signal utilizing said DSP, said processing filter, a second set of adjustment parameters and said digitized signal value,wherein said first output signal and said second output signal both implement said increase in said volume level.
3 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a system and method of adjusting a volume level for an audio signal for a communication device to comply with a quality threshold. The method comprises: obtaining a digitized signal value of the audio signal and monitoring for an increase in the volume level. In the method, upon determining that implementing the increase in the volume level would produce an output that would exceed the quality threshold, processing the signal value to produce a first output signal value for the audio signal utilizing a digital signal processing (DSP) device in the communication device, a processing filter defined in the digital signal processing device, a first set of adjustment parameters and the signal value. In the method, upon determining that implementing the increase in the volume level would not exceed the quality threshold processing the signal value to produce a second output signal value for the audio signal utilizing the DSP, the processing filter, a second set of adjustment parameters and the signal value. In the method, the first output signal and the second output signal both implement the increase in the volume level.
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Citations
19 Claims
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1. A method of adjusting a volume level for an audio signal for a communication device to comply with a quality threshold, said method comprising:
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monitoring for an increase in said volume level; upon determining that implementing said increase in said volume level would produce an output that would exceed said quality threshold processing a digitized signal value of said audio signal to produce a first output signal value for said audio signal utilizing a digital signal processing (DSP) device in said communication device, a processing filter defined in said digital signal processing device, a first set of adjustment parameters and said digitized signal value; and upon determining that implementing said increase in said volume level would not exceed said quality threshold processing said digitized signal value to produce a second output signal value for said audio signal utilizing said DSP, said processing filter, a second set of adjustment parameters and said digitized signal value, wherein said first output signal and said second output signal both implement said increase in said volume level. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system for adjusting a volume level for an audio signal for a communication device in compliance with a quality threshold, said system comprising:
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a module to accept a request for change of volume for said audio signal; a module to receive said audio signal and convert said audio signal to a digitized audio signal; a microprocessor; a digital signal processor for processing said digitized audio signal and producing a digital output signal utilizing a filter, said digitized audio signal and a set of parameters; a first module providing a set of instructions operating on said microprocessor, said set of instructions; determining when said request for said change of volume occurs; identifying a new volume level for said audio signal for said request; upon determining that implementing said new volume level would produce an output that would exceed said quality threshold producing a first output volume signal through said digital signal processor using a first set of adjustment parameters as said set of parameters and said new volume level; and upon determining that implementing said new volume level would produce an output that would not exceed said quality threshold producing a second output volume signal through said digital signal processor using a second set of adjustment parameters as said set of parameters and said new volume level; and a second module to convert said digitized audio signal to an analog audio signal and to provide said analog audio signal to a speaker, wherein said first output signal and said second output volume signal both implement said change of volume. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A circuit for adjusting an output audio signal of a communication device in compliance with a quality threshold, said circuit comprising:
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a module for receiving a signal encoding an audio signal and converting said signal to a digitized signal; a module to accept a request for an increase in a current volume setting to an increased volume level for said output audio signal; a microprocessor provided with instructions to detect when said request for said increase occurs and to generate an adjusted version of said digitized signal to implement said increased volume level utilizing a digital signal processor (DSP) a filter and said digitized signal; and a module to convert said adjusted version of the digitized signal to an analog audio signal and to provide said analog audio signal to a speaker, wherein the circuit determines if said request for said increase at said increased volume level would generate an audio output signal that exceeds said quality threshold; upon determining that said increased volume is within said quality threshold, selects a first set of adjustment parameters to be used by said digital signal processor to generate an adjusted version of said digitized signal to implement said increased volume having a received loudness rating (RLR) level; and upon determining that said increased volume would cause said output audio signal to exceed said quality threshold, selects a second set of adjustment parameters to be used by said digital signal processor to generate another adjusted version of said digitized signal that provides different output levels for said digitized signal at different frequencies as compared to said adjusted version to have an acceptable characteristic for said quality threshold while implementing said increased volume at about said RLR level. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification