System and Method for Configuring Audio Signals to Compensate for Acoustic Changes of the Ear
AssigneeRevX Technologies
InventorDennis Rauschmayer
Life of this patent
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Abstract
Personal speaker systems including headset and earbud systems may be configured to capture audio data using an in-ear microphone while a speaker outputs known audio signals into the ear canal. The system may generate an acoustic model of the compressed ear canal and ear drum of the listener and utilize the acoustic model to provide noise cancelation at the eardrum, modification to the audio to result in a more natural sound at the eardrum, and/or to measure leakage of the personal speaker system.
Claims20
A method comprising:
- determining a measured pressure at a microphone inside of a system, the system including an earbud coupled to an ear canal;
- and
- determining a reference pressure at a reference point in the system based at least in part on the measured pressure and at least one of a thevinin equivalent impedance or a thevinin equivalent pressure of a speaker of the earbud, a characteristics of a first acoustic transmission line between the microphone and an inner tip of the earbud, and an impedance at an outer tip of the earbud.
A non-transitory computer readable media storing instructions which when executed by one or more processors, cause the one or more processors to perform operations comprising:
- determining a measured pressure at a microphone inside of a system, the system including an earbud coupled to an ear canal;
- and
- determining a reference pressure at a reference point in the system based at least in part on the measured pressure and at least one of a thevinin equivalent impedance or a thevinin equivalent pressure of a speaker of the earbud, a characteristics of a first acoustic transmission line between the microphone and an inner tip of the earbud, and an impedance at an outer tip of the earbud.
An earbud comprising:
- a speaker;
- an in-ear microphone;
- at least one processor;
- a non-transitory computer readable media storing instructions which when executed by the at least one processor, cause the at least one processor to perform operations including:
- determining a measured pressure at the in-ear microphone inside of a system, the system including an earbud coupled to an ear canal;
- and
- determining a reference pressure at a reference point in the system based at least in part on the measured pressure and at least one of a thevinin equivalent impedance or a thevinin equivalent pressure of a speaker of the earbud, a characteristics of a first acoustic transmission line between the microphone and an inner tip of the earbud, and an impedance at an outer tip of the earbud.
Dependencies are inferred from the claim text.