Dynamic suppression of non-linear distortion

A computer program product comprising computer-readable program code to be executed by one or more processors when retrieved from a non-transitory computer-readable medium, the program code including instructions to:

• receive a signal by a multi-band limiter;
• split the received signal, by the multi-band limiter, into a plurality of bands using a notch filter and a peak filter, each filter having a center frequency tuned to a predetermined frequency for the device, each filter filtering one of the plurality of bands;
• compute both a tone strength parameter and a band level of each filtered band of the received signal;
• set limiter target output levels for a plurality of limiters, each limiter receiving a filtered band of the received signal from a filter, each limiter target output level being set such that suppression of the non-linear distortion is reduced when the tone strength parameter is in a lower portion of a predetermined range and suppression of the non-linear distortion is increased when the tone strength parameter is in an upper portion of a predetermined range, the predetermined range of the tone strength parameter corresponding to the loudness range of the device;
• limit, by the multi-band limiter, the output of each filter by each of the limiters based on the set limiter target output levels;
• and
• combine the outputs of each of the limiters, thereby providing a processed signal as an output of the multi-band limiter.

A method for providing dynamic suppression of non-linear distortion, the method comprising:

• receiving an signal on a device, the device having non-linear distortion at a pre-determined frequency;
• analyzing the received signal to identify a tone strength parameter and a band level of the received signal;
• and
• filtering the received signal such that the spectrum of the input signal is dynamically limited by reducing suppression of the non-linear distortion when the tone strength parameter is in a lower portion of a predetermined range and increasing suppression of the non-linear distortion when the tone strength parameter is in an upper portion of the predetermined range, the predetermined range of the tone strength parameter corresponding to a loudness range of the device.