Sound acquisition device for real ear analysis

Abstract

The utility model discloses a sound acquisition device for real ear analysis, which comprises a shell, a reference microphone assembly, a probe microphone assembly and an output cable, and is characterized in that the reference microphone assembly comprises an audio acquisition board arranged in the shell; the reference microphone is arranged on the audio acquisition board; the reference microphone sound guide seat is arranged in the shell and abuts against the audio acquisition plate; the audio acquisition board is provided with a first sound receiving hole, the reference microphone sound guide seat is provided with a first sound guide hole, the first sound receiving hole and the first sound guide hole are oppositely arranged and are in sealed connection through a first O-shaped ring, the first O-shaped ring is arranged at one end of the reference microphone sound guide seat, and the first sound guide hole is arranged at the other end of the reference microphone sound guide seat. A second O-shaped ring is arranged on the peripheral wall of the other end of the reference microphone sound guide seat; and the microphone further comprises a sound calibrator matching device which is detachably connected to the shell. According to the utility model, a user can conveniently calibrate the reference microphone, so that the reference microphone can be rapidly and effectively calibrated.

Description

Technical Field

[0001] The utility model relates to the technical field of sound collection devices, in particular to a sound collection device for real ear analysis. Background Art

[0002] Hearing aid testing is usually performed in standard couplers and ear simulators, so that the test data generated is of comparable value. However, standard couplers and ear simulators are different from our real ears after all. The effect of hearing aids in couplers and ear simulators is also different from the effect produced on the wearer. The amplification characteristics of hearing aids in different individual ears, especially in children, will be very different from these data.

[0003] The reference microphone of the sound collection device for real ear analysis commonly used in the industry is troublesome to calibrate using a sound calibrator, and is easily unable to be calibrated due to leakage gaps when used with the calibrator. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] The utility model aims to solve the technical problems existing in the prior art and provide a sound collection device for real ear analysis, which can facilitate the user to calibrate a reference microphone so that the reference microphone can be calibrated quickly and effectively.

[0006] 2. Technical solution

[0007] In order to solve the above problems, the technical solution provided by the utility model is:

[0008] A sound collection device for real ear analysis comprises a shell, a reference microphone assembly, a probe microphone assembly and an output cable, wherein the reference microphone assembly comprises an audio collection board arranged in the shell; a reference microphone arranged on the audio collection board; a reference microphone sound guide seat arranged in the shell and abutting against the audio collection board; a first sound collection hole is arranged on the audio collection board, a first sound guide hole is arranged on the reference microphone sound guide seat, the first sound collection hole and the first sound guide hole are arranged opposite to each other and are sealed and connected by a first O-ring, the first O-ring is arranged at one end of the reference microphone sound guide seat, a second O-ring is arranged on the outer peripheral wall of the other end of the reference microphone sound guide seat, and a sound calibrator adapter detachably connected to the shell is included, the sound calibrator adapter is provided with a sound calibration channel, one end of the sound calibration channel is connected to the reference microphone sound guide seat and is sealed by a second O-ring.

[0009] Optionally, the probe tube microphone assembly includes a probe tube microphone plate, which is arranged in the shell; a probe tube microphone, which is arranged on the probe tube microphone plate; a probe tube microphone sound guide seat, which is arranged in the shell and abuts against the probe tube microphone plate; a probe tube, which is connected to the probe tube microphone sound guide seat; a second sound receiving hole is provided on the probe tube microphone plate, and a second sound guide hole is provided on the probe tube microphone sound guide seat, the second sound receiving hole and the second sound guide hole are arranged opposite to each other and are sealed and connected by a third O-ring, and the third O-ring is provided on the probe tube microphone sound guide seat.

[0010] Optionally, the probe microphone assembly further includes a bracket for supporting the probe.

[0011] Optionally, the bracket includes a connecting ring connected to the sound guide seat of the probe microphone; a flexible adjustment tube connected to the connecting ring; and a clamping part connected to the flexible adjustment tube and used to clamp the probe.

[0012] Optionally, the connecting ring is sleeved on the sound guide seat of the probe tube microphone, and a tightening nut is threadedly connected on the sound guide seat of the probe tube microphone to fix the connecting ring.

[0013] Optionally, the probe tube comprises a front tubular portion and a base portion, and lines of segmented color intervals are printed in the axial direction of the front tubular portion.

[0014] Optionally, the shell comprises an upper shell, a lower shell and a card seat which are detachably connected in sequence, a fourth O-ring is provided between the lower shell and the card seat, and a sealing groove for fixing the fourth O-ring is provided on the card seat.

[0015] 3. Beneficial effects

[0016] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0017] The structural design of the sound collection device for real ear analysis and the sound calibrator adapter facilitates the user to calibrate the reference microphone while ensuring the aesthetics, so that the reference microphone can be calibrated quickly and effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of a sound collection device for real ear analysis proposed in an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of a probe microphone assembly in a sound collection device for real ear analysis proposed in an embodiment of the utility model;

[0020] Figure 3A schematic diagram of the structure of a reference microphone sound guide seat and a sound calibrator matching device in a sound collection device for real ear analysis proposed in an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the structure of a card holder in a sound collection device for real ear analysis proposed in an embodiment of the utility model;

[0022] 1. Shell; 11. Upper shell; 12. Lower shell; 13. Card seat; 131. Sealing groove; 14. Fourth O-ring; 2. Reference microphone assembly; 21. Audio acquisition board; 22. Reference microphone; 23. Reference microphone sound guide seat; 24. First O-ring; 25. Second O-ring; 3. Probe microphone assembly; 31. Probe microphone board; 32. Probe microphone; 33. Probe microphone sound guide seat; 34. Probe; 35. Bracket; 351. Connecting ring; 352. Flexible adjustment tube; 353. Clamping part; 36. Tightening nut; 4. Output cable; 5. Sound calibrator fitter. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and do not limit the protection scope of the utility model.

[0024] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. Further, when an element is considered to be "fixedly connected to" another element, the two may be fixed in a detachable connection manner or in a non-detachable connection manner, such as socketing, snap-on, one-piece fixation, welding, etc., which can be achieved in the prior art and will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The “first” and “second” involved in the present utility model do not represent specific quantities and orders, but are merely used to distinguish names.

[0027] Combined with Figure 1-4 A sound collection device for real ear analysis of the present embodiment includes a shell 1, a reference microphone assembly 2, a probe microphone assembly 3 and an output cable 4, the reference microphone assembly 2 is electrically connected to the probe microphone assembly 3 and the output cable 4, the shell 1 includes an upper shell 11, a lower shell 12 and a card holder 13 that are detachably connected in sequence, the reference microphone assembly 2 includes an audio collection board 21, which is arranged in the shell 1 and installed on the upper shell 11; a reference microphone 22, which is arranged on the audio collection board 21; a reference microphone sound guide seat 23, which is arranged in the shell 1 and abuts against the audio collection board 21; the audio collection board 21 presses the reference microphone sound guide seat 23 and is fixed to the upper shell 11 by screws, the audio collection board 21 is provided with a first sound collection hole, the first sound collection hole is arranged opposite to the reference microphone 22, the reference microphone sound guide seat 23 is provided with a first sound guide hole, the first sound collection hole and the first sound guide hole are arranged opposite to each other and are connected by a first The O-ring 24 is sealed, and the first O-ring 24 is arranged at one end of the reference microphone sound guide seat 23. The first O-ring 24 is compressed by the audio collection board 21, so that the reference microphone sound guide seat 23 and the sound receiving channel of the reference microphone on the audio collection board 21 are sealed. A second O-ring 25 is arranged on the outer peripheral wall of the other end of the reference microphone sound guide seat 23, and a groove for positioning the second O-ring 25 is arranged on the outer peripheral wall of the reference microphone sound guide seat 23. An opening is arranged at the position corresponding to the reference microphone sound guide seat 23 on the upper shell 11, and a sound calibrator adapter 5 is also included which is detachably connected to the shell 1. The sound calibrator adapter 5 is a stepped tube structure, and a sound calibration channel is arranged axially inside. The thin end is connected to the reference microphone sound guide seat 23, and the inner cylindrical surface of the thin end is in interference with the second O-ring 25. A sealed channel is formed after compression. The outer cylindrical surface of the thick end is inserted into the sound calibrator to perform the calibration operation of the reference microphone.

[0028] The structural design of the sound collection device for real ear analysis adapted to the sound calibrator adapter 5 facilitates the user to calibrate the reference microphone while ensuring aesthetics, so that the reference microphone can be calibrated quickly and effectively.

[0029] As a preferred embodiment of the present utility model, the probe tube microphone assembly 3 includes a probe tube microphone board 31, which is arranged in the shell 1; a probe tube microphone 32, which is arranged on the probe tube microphone board 31; a probe tube microphone sound guide seat 33, which is arranged in the shell 1 and abuts against the probe tube microphone board 31; a probe tube 34, which is connected to the probe tube microphone sound guide seat 33; the probe tube microphone board 31 and the probe tube microphone sound guide seat 33 cooperate with each other to be installed on the bracket on the upper shell 11, the probe tube microphone board 31 is electrically connected to the audio acquisition board 21, a second sound receiving hole is provided on the probe tube microphone board 31 at a position corresponding to the probe tube microphone 32, and a second sound guiding hole is provided on the probe tube microphone sound guide seat 33 along the axial direction, the second sound receiving hole and the second sound guiding hole are arranged opposite to each other and are sealed by a third O-ring to form a sealed sound receiving channel, and the third O-ring is provided on the probe tube microphone sound guide seat 33.

[0030] As a preferred embodiment of the present invention, the probe microphone assembly 3 also includes a bracket 35 for supporting the probe 34, the bracket 35 includes a connecting ring 351, which is sleeved on the probe microphone sound guide seat 33; a flexible adjustment tube 352, which is connected to the connecting ring 351, and the flexible adjustment tube 35 is an existing adjustment tube similar to the mobile phone holder, which can be deformed at will and remain fixed; a clamping part 353, which is connected to the flexible adjustment tube 352 and is used to clamp the probe 34, and the clamping part 353 is a clip to clamp the probe 34, and a tightening nut 36 is threadedly connected to the probe microphone sound guide seat 33 to fix the connecting ring 351. The uppermost end of the probe microphone sound guide seat 33 is tubular, and the downward part has an external thread structure, which can cooperate with the internal thread of the tightening nut 36 to firmly fix the bracket 35 on the overall outer shell. At the same time, when the bracket 35 is damaged, it is convenient to replace.

[0031] As a preferred embodiment of the present invention, the probe tube 34 has a transparent and soft front tubular portion and a base portion made of soft material, the two are tightly combined and have good sealing performance, and the overall structure is still a tubular structure with equal inner diameters at both ends. The axial direction of the front tubular portion is printed with lines of segmented color intervals to show the approximate size of the insertion into the ear canal, so as to adapt to the range of different ear canal depths of children, adult females, and adult males, so as to remind the operator to pay more attention to the operation at this time.

[0032] As a preferred solution of the utility model, a fourth O-ring 14 is provided between the lower shell 12 and the holder 13, and a sealing groove 131 for fixing the fourth O-ring 14 is provided on the holder 13. The width of the sealing groove 131 is slightly larger than the diameter of the fourth O-ring 14. At the same time, in order to ensure that the fourth O-ring 14 can be reliably positioned with the holder 13, a protrusion is provided on one side wall of the sealing groove 131, and the two protrusions are symmetrically distributed. The holder 13 is fixed by screws, and when the fourth O-ring 14 is damaged, the user can conveniently replace it.

[0033] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A sound collection device for real ear analysis, characterized in that: The invention comprises a housing, a reference microphone assembly, a probe microphone assembly and an output cable, wherein the reference microphone assembly comprises An audio acquisition board is arranged in the housing; A reference microphone is provided on the audio acquisition board; A reference microphone sound guide seat is arranged in the housing and abuts against the audio acquisition board; The audio collection board is provided with a first sound receiving hole, and the reference microphone sound guide seat is provided with a first sound guiding hole. The first sound receiving hole and the first sound guiding hole are arranged opposite to each other and are sealed and connected by a first O-ring. The first O-ring is provided at one end of the reference microphone sound guide seat, and a second O-ring is provided on the outer peripheral wall of the other end of the reference microphone sound guide seat. The shell also includes a sound calibrator adapter detachably connected to the sound calibrator adapter, a sound calibration channel is provided on the sound calibrator adapter, and one end of the sound calibration channel is connected to the reference microphone sound guide seat and is sealed by a second O-ring.

2. A sound collection device for real ear analysis according to claim 1, characterized in that: The probe microphone assembly includes A probe microphone plate is disposed in the housing; A probe tube microphone is arranged on the probe tube microphone board; A probe microphone sound guide seat is arranged in the shell and abuts against the probe microphone plate; A probe tube connected to the probe tube microphone sound guide seat; The probe tube microphone plate is provided with a second sound receiving hole, the probe tube microphone sound guide seat is provided with a second sound guiding hole, the second sound receiving hole and the second sound guiding hole are arranged opposite to each other and are sealed and connected by a third O-ring, and the third O-ring is arranged on the probe tube microphone sound guide seat.

3. A sound collection device for real ear analysis according to claim 2, characterized in that: The probe tube microphone assembly further includes a bracket for supporting the probe tube.

4. A sound collection device for real ear analysis according to claim 3, characterized in that: The bracket includes A connecting ring connected to the sound guide seat of the probe microphone; A flexible regulating tube connected to the connecting ring; The clamping part is connected to the flexible adjusting tube and is used for clamping the probe tube.

5. A sound collection device for real ear analysis according to claim 4, characterized in that: The connecting ring is sleeved on the sound guide seat of the probe tube microphone, and a tightening nut is threadedly connected on the sound guide seat of the probe tube microphone to fix the connecting ring.

6. A sound collection device for real ear analysis according to any one of claims 2 to 5, characterized in that: The probe tube comprises a front tubular portion and a base portion, and lines of segmented color intervals are printed in the axial direction of the front tubular portion.

7. A sound collection device for real ear analysis according to any one of claims 1 to 5, characterized in that: The housing comprises an upper shell, a lower shell and a card seat which are detachably connected in sequence, a fourth O-ring is arranged between the lower shell and the card seat, and a sealing groove for fixing the fourth O-ring is arranged on the card seat.

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