Synchronized pitch and timing cues in a hearing prosthesis system

A method, comprising:

• receiving a first set of sound signals at a first implant of a bilateral implant system;
• receiving a second set of sound signals at a second implant of the bilateral implant system, wherein the first set of sound signals and the second set of sound signals are associated with a same one or more sound sources;
• generating, at the first implant, a first sequence of stimulation pulses based on the first set of sound signals, wherein the first sequence of stimulation pulses have amplitudes that are modulated with a first modulation;
• delivering the first sequence of stimulation pulses to a first ear of a recipient of the bilateral implant system;
• generating, at the second implant, a second sequence of stimulation pulses based on the second set of sound signals, wherein the second sequence of stimulation pulses have amplitudes that are modulated using the same first modulation as the first sequence of stimulation pulses;
• and
• delivering the second sequence of stimulation pulses to a second ear of the recipient,
• wherein the second sequence of stimulation pulses is delivered to the recipient with a time delay relative to delivery of the first sequence of stimulation pulses and wherein the time delay is based on an Interaural Time Difference (ITD) associated with receipt of the first set of sound signals at the first implant and receipt of the second set of sound signals at the second implant.

A implant system, comprising:

• a first implant configured to:
• receive a first set of sound signals generated by at least one sound source,
• convert the first set of sound signals into a first stimulation pulse train, wherein the first stimulation pulse train is artificially amplitude modulated based on a fundamental frequency associated with the at least one sound source, and
• deliver the first stimulation pulse train to a first ear of a recipient of the implant system;
• and
• a second implant configured to:
• receive a second set of sound signals generated by the at least one sound source,
• convert the second set of sound signals into a second stimulation pulse train, wherein the second stimulation pulse train is artificially amplitude modulated based on the fundamental frequency associated with the at least one sound source,
• determine, relative to delivery of the first stimulation pulse train to the first ear of the recipient, a time delay for delivery of the second stimulation pulse train to a second ear of the recipient, and
• deliver the second stimulation pulse train to the second ear of the recipient at a time corresponding to the time delay.

Non-transitory computer readable storage media encoded with instructions that, when executed by one or more processors, cause the one or more processors to:

• generate, at a first device, a first sequence of stimulation pulses representative of first audio data received at the first device;
• generate, at a second device, a second sequence of stimulation pulses representative of second audio data received at the second device;
• modulate the first sequence of stimulation pulses based on one or more features of the first audio data and the second audio data;
• modulate the second sequence of stimulation pulses based on the one or more features of the first audio data and the second audio data;
• and
• synchronize a timing of delivery of the first sequence of stimulation pulses to a first ear of a recipient with a timing of delivery of the second sequence of stimulation pulses to a second ear of the recipient.