Guitar feedback emulation

A method for simulating acoustic feedback comprising:

• tracking one or more notes in an input signal for which to generate simulated acoustic feedback;
• for each of the notes, selecting a specified frequency for generating simulated acoustic feedback as a multiple of a frequency of the respective note;
• and
• for each of the specified frequencies, based on a combination of whether harmonic content at the specified frequency meets a predefined threshold level and the multiple of the frequency of the respective note being used, generating the simulated acoustic feedback by filtering existing content of the input signal at the respective specified frequency or by generating a tone at the respective specified frequency.

A non-transitory computer readable medium comprising instructions for simulating acoustic feedback that, when executed by an audio processor, cause the audio processor to:

• track a note in an input signal for which to generate simulated acoustic feedback;
• select a specified frequency for generating simulated acoustic feedback as a multiple of a frequency of the note;
• responsive to determining that harmonic content at the specified frequency is at least meeting a predefined threshold level and that configuration rules of the audio processor allow for use of equalizer-based feedback for the multiple, generate simulated acoustic feedback at the specified frequency by filtering existing content of the input signal at the specified frequency;
• and
• responsive to determining that harmonic content at the specified frequency is not meeting the predefined threshold level and that configuration rules of the audio processor allow for use of tone-based feedback for the multiple, generate simulated acoustic feedback at the specified frequency by generating a tone at the specified frequency.