Reducing comb filtering for hearing devices

A system comprising:

• a computing device comprising at least one processor and a data storage device in communication with the at least one processor, wherein the data storage device comprises instructions thereon that, when executed by the at least one processor, causes the at least one processor to:
• determine an effective time delay, as a function of frequency, between a direct path from a sound source to an eardrum of a wearer of a hearing device and an amplified path from the sound source through the hearing device to the eardrum of the wearer;
• calculate a set of cancellation frequencies based at least in part on the determined effective time delay for the hearing device;
• compare an aided gain response of the hearing device and a real-ear occluded gain response of the hearing device;
• determine one or more spectral interaction regions for the hearing device based at least in part on the comparison;
• determine a subset of cancellation frequencies by comparing the one or more spectral interaction regions with the set of cancellation frequencies;
• construct a filter using the subset of cancellation frequencies and a determined attenuation configured to reduce comb filtering for the wearer of the hearing device;
• and
• apply the filter to an incoming audio signal in the hearing device to reduce comb filtering for the wearer of the hearing device.