Air-bone conduction integrated sound insulation earphone

Abstract

The invention discloses an air-bone conduction integrated sound insulation earphone which comprises an outer layer earmuff, an inner layer earmuff, an air conduction earphone, a bone conduction earphone and an air bag. The inner layer earmuff is sleeved with the outer layer earmuff, the air conduction earphone is arranged on the inner side of the inner layer earmuff, the bone conduction earphone is connected with the outer layer earmuff, and the air bag is arranged at the bottom ends of the outer layer earmuff and the inner layer earmuff. The air conduction earphone is arranged on the inner side of the inner layer earmuff, the inner layer earmuff is sleeved with the outer layer earmuff, the edge of one side of the air bag completely fits the skin of a user, when the earphone is in use, no sound leakage is caused when the air conduction earphone plays sound, the interference generated by two ears during testing is effectively avoided, the testing procedures are greatly simplified and the testing precision is improved; meanwhile, by arranging the bone conduction earphone, the operation steps can be simplified, the air and bone conduction earphones can be conveniently used for alternate detection, and the testing efficiency is improved. The air-bone conduction integrated sound insulation earphone occupies small space, can replace a sound-proof room, is suitable for various audiology examinations and has good social benefits.

Description

technical field [0001] The invention belongs to hearing equipment, in particular to an air-bone conduction integrated sound-insulating earphone. Background technique [0002] There are two kinds of earphones that need to be used in the hearing test: air-conduction earphones and bone-conduction earphones. [0003] There are many hearing test items using air conduction earphones, such as pure tone air conduction hearing threshold test, comfort and discomfort threshold test, and tinnitus detection. Currently the most widely used air conduction earphones are press-ear earphones, circumaural earphones and insert earphones, but these earphones all have some defects. For example: ear-press earphones are tightly pressed on the outside of the auricle, and the main problems are: narrow frequency response, sound leakage, can cause ear canal collapse, can not accurately repeat the signal in a very short time, small attenuation between the ears And it will produce ear blocking effect a...

AI Technical Summary

Problems solved by technology

For example: ear-press earphones are tightly pressed on the outside of the auricle, and the main problems are: narrow frequency response, sound leakage, can cause ear canal collapse, can not accurately repeat the signal in a very short time, small attenuation between the ears And it will produce ear blocking effect, etc.

[0004] Although the earphones are comfortable to wear and will not cause the ear canal to collapse, the problems of sound leakage, small interaural attenuation and ear plugging effect have not been solved. It can be seen that there is a problem with the earphones and the earphones.

[0005] Plug-in earphones are currently earphones with large interaural attenuation, which can relatively reduce sound leakage, but because the probe needs to be inserted into the external auditory canal, the subject will feel a foreign body sensation in the ear, and the earplugs must be replaced every time they are used, which increases the use of Cost and operation steps, some subjects with abnormal ear canal cannot be used, and it is rarely used clinically

[0006] As we all know, due to the sound leakage problem of the earphones, when the hearing thresholds of the two ears of the subject are significantly different, the stimulation sound given to the poorer ear will be louder. If the volume exceeds the minimum interaural attenuation value, the opposite hearing The better ear will eavesdrop on the stimulus, at which point the subject may respond by mistakenly thinking that he has heard the test signal, which can lead to errors in the test structure

In order to solve the problem of eavesdropping, a method called masking audiometry is used clinically, that is, adding a noise on the better side of the ear to interfere with its hearing and avoid eavesdropping, but this will make the test steps cumbersome and affect the efficiency , and this masking test method has high requirements for operators, and improper operation may cause insufficient or excessive masking, which has a great impact on the structure

[0007] In pure tone audiometry, the bone conduction test is usually done after the air conduction test. The earphones used in the bone conduction test are bone conduction earphones. The bone conduction earphones use the vibration of the skull to detect the hearing threshold. Therefore, masking is required during the single-ear test. The current method of operation is that after the air conduction test is completed, the subject also wears a bone conduction earphone, and then wears an air conduction earphone on the opposite ear for masking. The tester will feel very uncomfortable, and then perform the same operation on the other ear after testing one ear, which makes the operation cumbersome and reduces the test efficiency

Images