Power limiter configuration for audio signals
AssigneeBiamp Systems, LLC
InventorAaron Faulstich
Life of this patent
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Abstract
Example embodiments provide a process that includes one or more of receiving an audio signal at a feedback compressor circuit, receiving an auxiliary attenuation signal from an auxiliary attenuation source, determining a threshold power level based on a value of the auxiliary attenuation signal, determining an output power level of the audio signal exceeds the threshold power level, combining the audio signal with the auxiliary attenuation signal from the auxiliary attenuation source and a compressed attenuation signal from the feedback compressor circuit to create a combination signal, and generating an audio output signal of the feedback compressor circuit based on the combination signal.
Claims11
A method comprising:
- receiving an audio signal at a feedback compressor circuit;
- receiving an auxiliary attenuation signal from an auxiliary attenuation source;
- determining a threshold power level based on a value of the auxiliary attenuation signal;
- determining an output power level of the audio signal exceeds the threshold power level;
- combining the audio signal with the auxiliary attenuation signal from the auxiliary attenuation source and a compressed attenuation signal from the feedback compressor circuit to create a combination signal;
- dynamically adjusting a value of a low pass filter (LPF) based on a change to the threshold power level;
- filtering the audio output signal via the low pass filter (LPF);
- combining the filtered audio output signal with the auxiliary attenuation signal and the compressed attenuation signal to create the combination signal;
- and
- combining the combination signal with the audio signal to create an audio output signal.
An apparatus comprising:
- a receiver configured to
- receive an audio signal at a feedback compressor circuit;
- receive an auxiliary attenuation signal from an auxiliary attenuation source;
- and
- a processor configured to
- determine a threshold power level based on a value of the auxiliary attenuation signal;
- determine an output power level of the audio signal exceeds the threshold power level;
- combine the audio signal with the auxiliary attenuation signal from the auxiliary attenuation source and a compressed attenuation signal from the feedback compressor circuit to create a combination signal;
- dynamically adjust a value of a low pass filter (LPF) based on a change to the threshold power level;
- filter the audio output signal via the low pass filter (LPF);
- combine the filtered audio output signal with the auxiliary attenuation signal and the compressed attenuation signal to create the combination signal;
- and
- combine the combination signal with the audio signal to create an audio output signal.
A non-transitory computer readable storage medium configured to store instructions that when executed cause a processor to perform:
- receiving an audio signal at a feedback compressor circuit;
- receiving an auxiliary attenuation signal from an auxiliary attenuation source;
- determining a threshold power level based on a value of the auxiliary attenuation signal;
- determining an output power level of the audio signal exceeds the threshold power level;
- combining the audio signal with the auxiliary attenuation signal from the auxiliary attenuation source and a compressed attenuation signal from the feedback compressor circuit to create a combination signal;
- dynamically adjusting a value of a low pass filter (LPF) based on a change to the threshold power level;
- filtering the audio output signal via the low pass filter (LPF);
- combining the filtered audio output signal with the auxiliary attenuation signal and the compressed attenuation signal to create the combination signal;
- and
- combining the combination signal with the audio signal to create an audio output signal.
Dependencies are inferred from the claim text.