Power limiter configuration for audio signals

1. A method comprising:

receiving an audio signal from a feedback path of a feedback compressor circuit;

determining whether an auxiliary attenuation value applied to the feedback compressor circuit has changed since a last audio signal was received;

responsive to determining the auxiliary attenuation value has changed, determining a current operational state value of a low pass filter (LPF) needs to be modified;

responsive to determining the auxiliary attenuation value has increased or decreased, changing the operational state value of the LPF by a value that is directly proportional to the change in the auxiliary attenuation value;

modifying the current operational state value of the LPF; and

applying the audio signal to the modified LPF.

2. The method of claim 1 , comprising:

storing a plurality of operational state values of the LPF in a memory.

3. The method of claim 2 , comprising:

determining a derivative of the auxiliary attenuation value as a basis to modify the operational state value of the LPF.

4. The method of claim 1 , comprising:

determining an anti-log conversion of the audio signal prior to applying the audio signal to the LPF.

5. The method of claim 1 , comprising:

dynamically adjusting the operational state value of the LPF based on a change to a threshold power level; and

filtering the audio signal via LPF.

6. The method of claim 1 , wherein the auxiliary attenuation signal comprises a composite of attenuation signals received from a plurality of sensors configured to generate one or more of an excessive heat signal, an excessive output current signal and a power supply voltage sag signal.

7. An apparatus comprising:

a receiver configured to receive an audio signal from a feedback path of a feedback compressor circuit;

a processor configured to

determine whether an auxiliary attenuation value applied to the feedback compressor circuit has changed since a last audio signal was received;

responsive to the determination that the auxiliary attenuation value has changed, determine a current operational state value of a low pass filter (LPF) needs to be modified;

responsive to a determination that the auxiliary attenuation value has increased or decreased, change the operational state value of the LPF by a value that is directly proportional to the change in the auxiliary attenuation value;

modify the current operational state value of the LPF; and

apply the audio signal to the modified LPF.

8. The apparatus of claim 7 , wherein the processor is further configured to

store a plurality of operational state values of the LPF in a memory.

9. The apparatus of claim 8 , wherein the processor is further configured to determine a derivative of the auxiliary attenuation value as a basis to modify the operational state value of the LPF.

10. The apparatus of claim 7 , wherein the processor is further configured to

determine an anti-log conversion of the audio signal prior to applying the audio signal to the LPF.

11. The apparatus of claim 7 , wherein the processor is further configured to dynamically adjust the operational state value of the LPF based on a change to a threshold power level; and

filter the audio signal via the LPF.

12. The apparatus of claim 7 , wherein the auxiliary attenuation signal comprises a composite of attenuation signals received from a plurality of sensors configured to generate one or more of an excessive heat signal, an excessive output current signal and a power supply voltage sag signal.

13. A non-transitory computer readable storage medium configured to store instructions that when executed cause a processor to perform:

receiving an audio signal from a feedback path of a feedback compressor circuit;

determining whether an auxiliary attenuation value applied to the feedback compressor circuit has changed since a last audio signal was received;

responsive to determining the auxiliary attenuation value has changed, determining a current operational state value of a low pass filter (LPF) needs to be modified;

responsive to determining the auxiliary attenuation value has increased or decreased, changing the operational state value of the LPF by a value that is directly proportional to the change in the auxiliary attenuation value;

modifying the current operational state value of the LPF; and

applying the audio signal to the modified LPF.

14. The non-transitory computer readable storage medium of claim 13 , wherein the processor is further configured to perform:

storing a plurality of operational state values of the LPF in a memory.

15. The non-transitory computer readable storage medium of claim 14 , wherein the processor is further configured to perform:

determining a derivative of the auxiliary attenuation value as a basis to modify the operational state value of the LPF.

16. The non-transitory computer readable storage medium of claim 13 , wherein the processor is further configured to perform:

determining an anti-log conversion of the audio signal prior to applying the audio signal to the LPF.

17. The non-transitory computer readable storage medium of claim 13 , wherein the processor is further configured to perform:

dynamically adjusting the operational state value of the LPF based on a change to a threshold power level; and

filtering the audio signal via the LPF.