Flexible transducer for soft-tissue and acoustic audio production
The present embodiments relate to techniques ( 300 ) and apparatuses ( 100, 500 ) for implementing a flexible transducer for soft-tissue audio production. These techniques ( 300 ) and apparatuses ( 100, 500 ) enable an audio-production device ( 102 ) having a flexible transducer ( 116, 402 ) conformed to a person's pinna to create audio within the person's external ear canal.
1. An audio-production device comprising:
a flexible electrical-to-mechanical (E-M) transducer including a first region and a second region;
a power source;
one or more computer processors; and
one or more computer-readable media having instructions stored thereon that, responsive to execution by the one or more computer processors, cause the power source to:
apply a first voltage signal to the first region of the flexible E-M transducer effective to mechanically contract or expand the first region of the flexible E-M transducer effective to alter a first shape of a first portion of a pinna of a human ear to create a first audio dipole within an external auditory canal of the human ear, and
apply a second voltage signal to the second region of the flexible E-M transducer effective to mechanically contract or expand the second region of the flexible E-M transducer effective to alter a second shape of a second portion of the pinna to create a second audio dipole within the external auditory canal.
2. The audio-production device as recited in claim 1 , wherein the flexible E-M transducer comprises multiple gels having an impedance similar to human soft-tissue impedance.
3. The audio-production device as recited in claim 2 , wherein the multiple gels are ionic polymers.
4. The audio-production device as recited in claim 1 , wherein the flexible E-M transducer is a stretchable ionic transparent transducer.
5. The audio-production device as recited in claim 1 , wherein the audio-production device operates without occluding or plugging the external auditory canal.
6. The audio-production device as recited in claim 1 , wherein causing the power source to alter the first shape of the first portion of the pinna and the second shape of the second portion of the pinna causes the pinna to be either more concave or less concave than an original shape of the pinna.
7. The audio-production device as recited in claim 1 , wherein causing the power source to apply the first voltage signal and the second voltage signal to the flexible E-M transducer causes the flexible E-M transducer to squeeze and release or spread the pinna.
8. The audio-production device as recited in claim 1 , wherein the first region and the second region overlap.
9. The audio-production device as recited in claim 1 , wherein the first audio dipole and the second audio dipole are complimentary.
10. The audio-production device as recited in claim 1 , wherein the first audio dipole is effective to cancel part of the second audio dipole.
11. The audio-production device as recited in claim 1 , wherein the first portion of the pinna and the second portion of the pinna, when mechanically contracted or expanded, produce different sound wavelengths.
12. The audio-production device as recited in claim 1 , wherein the power source wirelessly provides the first voltage signal and the second voltage signal to the flexible E-M transducer.
13. The audio-production device as recited in claim 1 , wherein a near-field of the first audio dipole is within the external auditory canal and a far-field of the first audio dipole is outside of the human ear effective to create low-volume sound outside the human ear and high-volume sound inside the external auditory canal.
14. The audio-production device as recited in claim 1 , wherein the audio-production device further comprises a sensor capable of sensing the first audio dipole and wherein the instructions, responsive to execution by the one or more processors, further:
determine an error by comparing the sensed first audio dipole and an audio dipole intended to be created within the external auditory canal, and
determine, based on the error, a voltage correction and applying the voltage correction, or
provide the error to an entity effective to enable reduction of future errors.
15. The audio-production device as recited in claim 1 , wherein the instructions, responsive to execution by the one or more processors, further determine, based on audio data, the first voltage signal and the second voltage signal to apply effective to create music corresponding to the audio data and within the external auditory canal.