Psychoacoustics for improved audio reproduction, power reduction, and speaker protection

1. A method for processing audio data for output to a transducer, comprising:

receiving an audio signal;

filtering the audio signal with a fixed filter having fixed filter coefficients to generate a filtered audio signal; and

outputting the filtered audio signal to the transducer;

wherein the fixed filter coefficients of the fixed filter are tuned by:

using a psychoacoustic model of the transducer to determine audibility masking thresholds for a plurality of frequency sub-bands;

allocating compensation coefficients to the plurality of frequency sub-bands; and

fitting the fixed filter coefficients with the compensation coefficients allocated to the plurality of sub-bands.

2. The method of claim 1 , wherein the fixed filter coefficients of the fixed filter are further tuned by repeating the using, allocating, and fitting steps to achieve a desired response of the filtered audio signal.

3. The method of claim 2 , wherein the desired response is one or more of a desired audio enhancement of the audio signal, a desired power reduction, a desired speaker protection, and a desired impulse response of the filtered audio signal.

4. The method of claim 1 , wherein the fixed filter coefficients of the fixed filter are further tuned by using a plurality of tuning signals to tune the psychoacoustic model.

5. The method of claim 4 , wherein tuning of the filter coefficients of the fixed filter occurs offline.

6. The method of claim 1 , further comprising calculating the compensation coefficients by using one of signal processing, statistical analysis, machine learning, and probabilistic analysis.

7. The method of claim 1 , wherein the fixed filter is combined into a single filter that applies a combination of a response of the fixed filter and a response of a sonic audio enhancement filter.

8. A system for processing audio data for output to a transducer, comprising:

a fixed filter configured to:

receive an audio signal;

filter the audio signal with a fixed filter having fixed filter coefficients to generate a filtered audio signal; and

output the filtered audio signal to the transducer; and

a psychoacoustic model of the transducer configured to tune the fixed filter coefficients of the fixed filter by:

determining audibility masking thresholds for a plurality of frequency sub-bands;

allocating compensation coefficients to the plurality of frequency sub-bands; and

fitting the fixed filter coefficients with the compensation coefficients allocated to the plurality of frequency sub-bands.

9. The system of claim 8 , wherein the psychoacoustic model is further configured to tune the fixed filter coefficients of the fixed filter by repeating the using, allocating, and fitting steps to achieve a desired response of the filtered audio signal.

10. The system of claim 9 , wherein the desired response is one or more of a desired audio enhancement of the audio signal, a desired power reduction, a desired speaker protection, and a desired impulse response of the filtered audio signal.

11. The system of claim 8 , wherein the psychoacoustic model is further configured to tune the fixed filter coefficients of the fixed filter by using a plurality of tuning signals to tune the psychoacoustic model.

12. The system of claim 11 , wherein tuning of the fixed filter coefficients of the fixed filter occurs offline.

13. The system of claim 8 , wherein the psychoacoustic model is further configured to calculate the compensation coefficients by using one of signal processing, statistical analysis, machine learning, and probabilistic analysis.

14. The system of claim 8 , wherein the fixed filter is combined into a single filter that applies a combination of a response of the fixed filter and a response of a sonic audio enhancement filter.