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A Bone Conduction Earphone Equalization Method Based on Stimulus Frequency Otoacoustic Emissions

A technology of otoacoustic emission and bone conduction earphones, applied in frequency response correction, earpiece/earphone accessories, bone conduction transducer hearing equipment, etc., can solve the problems of no bone conduction earphone equalization, etc., and achieve convenient, objective and reliable measurement

Active Publication Date: 2021-06-08
INST OF ACOUSTICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

None of the previous related patents or papers have used this method to obtain the air-bone conduction differential transfer function, nor have they carried out bone conduction earphone equalization based on this method.

Method used

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  • A Bone Conduction Earphone Equalization Method Based on Stimulus Frequency Otoacoustic Emissions
  • A Bone Conduction Earphone Equalization Method Based on Stimulus Frequency Otoacoustic Emissions
  • A Bone Conduction Earphone Equalization Method Based on Stimulus Frequency Otoacoustic Emissions

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Experimental program
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Embodiment 1

[0080] Such as figure 1 As shown, Embodiment 1 provides a bone conduction earphone equalization method based on stimulation frequency otoacoustic emissions. This embodiment mainly takes the timbre of high-quality air-conduction earphones as the target timbre, uses the stimulation frequency otoacoustic emission signal, and measures the air-bone conduction difference transfer function through double-induced technology, and equalizes the bone conduction earphone to make the bone conduction The timbre of the earphones is close to that of air conduction earphones.

[0081] Step 1: In the audiometry room, the subject wears a bone conduction device and an air conduction earphone at the same time, and a probe microphone is installed in one ear canal of a real person;

[0082] Step 2: The air-conduction earphone emits the sweeping detection sound S1, and obtains the signal V1 through the probe microphone. At this time, the signal V1 includes the induced sound artifact of S1 and the ot...

Embodiment 2

[0104] Such as figure 1 As shown, embodiment 2 provides a bone conduction earphone equalization method based on stimulating frequency otoacoustic emission. This embodiment mainly takes the timbre of a high-quality speaker as the target timbre, uses the stimulating frequency otoacoustic emission signal, and measures the breath by double-induced technology. - Bone conduction difference transfer function, to equalize the tested bone conduction earphones, so that the timbre of the bone conduction earphones is close to the timbre of high-quality speakers.

[0105] Step 1: In the audiometry room, the subject wears a bone conduction device, places a speaker with high-quality sound in front of him at a distance of 1m, and inserts a probe microphone into one side of the ear canal of a real person;

[0106] Step 2: The loudspeaker emits the sweeping detection sound S1, and obtains the signal V1 through the probe microphone. At this time, the signal V1 includes the evoked sound artifact ...

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Abstract

The invention discloses a bone conduction earphone equalization method based on stimulation frequency otoacoustic emission. The method specifically includes: measuring stimulation frequency otoacoustic emission signal, using double induction technology to remove induced sound artifacts, and calculating air conduction induced sound and ear acoustic emission respectively. Air conduction otoacoustic emission transfer function between acoustic emission signals and bone conduction otoacoustic emission transfer function between bone conduction-induced speech and otoacoustic emission signals; according to air conduction otoacoustic emission transfer function and bone conduction otoacoustic emission transfer function The air-bone conduction difference transfer function is calculated; the bone conduction earphone equalization function is calculated according to the air-bone conduction difference transfer function; the bone conduction earphone is equalized according to the bone conduction earphone equalization function. The invention makes the equalization of the bone conduction earphone no longer rely on subjective listening and long-term debugging, and only needs the objective reference quantity and the objective transfer function to make the equalized effect of the bone conduction earphone approach the target.

Description

technical field [0001] The invention relates to the technical field of bone conduction sound transmission, in particular to a bone conduction earphone equalization method based on stimulation frequency otoacoustic emission, especially an equalization method of bone conduction earphone based on air-bone conduction differential transfer function of stimulation frequency otoacoustic emission. Background technique [0002] Bone conduction technology, due to its advantages of open ear canal without ear blocking effect and comfortable wearing, is not only applied in the field of hearing aids, but also popular in the field of communication / entertainment headphones. However, compared with the mature air conduction sound transmission technology, the sound quality of bone conduction sound playback is far inferior due to the fact that the electroacoustic characteristics of bone conduction earphones and the sound transmission characteristics of bone conduction sound in the human skull ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/10H04R3/04
CPCH04R1/10H04R3/04H04R2201/10H04R2430/00H04R2460/13
Inventor 桑晋秋聂亚飞王杰张芳杰郑成诗李晓东
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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