Ear sound simulator

Abstract

The utility model particularly relates to an otoacoustic simulator which comprises a base and a probe used for otoacoustic emission detection, a control chip, a display screen and a controller are arranged on the base, the display screen and the controller are respectively connected with the control chip, and the probe is electrically connected with the control chip through a processing module. A human head model is arranged on the base, simulated ear canals are arranged in the human head model corresponding to ears on the two sides of the human head model respectively, audio generation modules are arranged at the positions, corresponding to cochlea, in the simulated ear canals, and the audio generation modules are electrically connected with the control chip and used for outputting simulated sounds; a detection module is further arranged in the simulated ear canal and used for detecting the position of the probe inserted into the external auditory canal of the simulated ear canal. According to the utility model, different otoacoustic signals of a subject can be simulated, the otoacoustic detection process can be simulated by correctly wearing the probe, otoacoustic emission signals under different hearing conditions can be simulated, and the sensitivity, the detection accuracy and other performances of the test probe can be compared, so that the practical test application or teaching guidance and other purposes can be facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of simulated otoacoustic detection equipment, and specifically to an otoacoustic simulator. Background Technology

[0002] Otoacoustic emission (OAE) testing instruments utilize simulation methods to study the properties and auditory mechanisms of OAEs, analyze OAE signals, and investigate the frequency selectivity, amplitude characteristics, and frequency delay characteristics of the cochlea. Because OAE signals are extremely weak, signal processing methods such as continuous spectrum analysis, short-time spectrum analysis, Ar spectrum analysis, and wavelet transform are typically used to analyze and process the characteristics of OAEs. However, existing testing instruments, due to their numerous internal circuit modules, are prone to internal noise or are susceptible to environmental noise, leading to deviations in the actual detection results. Even differences in probe sensitivity can affect the accuracy of the test results. Therefore, OAE signal acquisition probes should be pre-tested and their performance adjusted using a model before use. Furthermore, using a suitable model can better demonstrate OAE testing to students for teaching purposes. Utility Model Content

[0003] To address the problems existing in the prior art, the present invention aims to provide an otoacoustic simulator. This invention can simulate different otoacoustic signals from a subject, and by correctly wearing the probe, simulate the otoacoustic detection process. It can simulate otoacoustic emission signals under different hearing conditions and compare the sensitivity, detection accuracy, and other performance characteristics of the test probe, facilitating practical testing applications or teaching guidance.

[0004] The otoacoustic simulator of this utility model includes a base and a probe for otoacoustic emission detection. The base is equipped with a control chip and a display screen and a controller respectively connected to the control chip. The probe is electrically connected to the control chip through a processing module. The base is equipped with a human head model, and the human head model has simulated ear canals corresponding to the two ears on both sides. An audio generation module is provided inside the simulated ear canal at the position corresponding to the cochlea. The audio generation module is electrically connected to the control chip and is used to output simulated sound. A detection module is also provided inside the simulated ear canal. The detection module is used to detect the position of the probe inserted into the external ear canal of the simulated ear canal.

[0005] In one embodiment, an indicator light is provided at the eye position of the human head model, and the audio generation module and the indicator light on the same side are electrically connected to each other. The indicator light is used to reflect whether the audio generation module outputs simulated sound.

[0006] In one embodiment, the indicator light is also electrically connected to the detection module, and the indicator light contains at least two colors. When the detection module detects that the probe is in the appropriate position, the indicator light displays one color, and when the audio generation module outputs analog sound, the indicator light displays another color.

[0007] In one embodiment, the base is provided with a data acquisition module, which is connected to the probe through the processing module and to the audio generation module through the control chip. The data acquisition module is used to record the detected otoacoustic signal data and can instruct the audio generation module to output the corresponding analog sound.

[0008] In one embodiment, the base is provided with a socket, and the human head model is mounted on the base through the socket. An interface is formed in the middle of the socket so that the audio generation module can be electrically connected to the control chip.

[0009] In one embodiment, the side of the socket is a soft rubber layer, and the soft rubber layer forms a plurality of annular protrusions.

[0010] In one embodiment, there are two displays, one on the left and one on the right, respectively. The controller includes an adjustment knob, a start button, and a synchronization lever. A power switch is also provided on the side of the base.

[0011] In one embodiment, the back of the base is provided with an interface for connecting other audio input and output devices, the interface being electrically connected to the control chip.

[0012] Compared with the prior art, the beneficial effects of this utility model's technical solution are:

[0013] This invention can simulate the process of otoacoustic testing for subjects. It can be modified by adding a human head model to an existing otoacoustic testing instrument to simulate the process from the subject wearing the probe to the instrument's detection and analysis to obtain the results. Before the actual test, different otoacoustic signals can be simulated inside the human head model through an audio generation module, as well as the loss and reflection after passing through the simulated ear canal. This allows for testing and comparison of the sensitivity of some probes and the analytical accuracy of the testing instrument, ensuring that the otoacoustic testing instrument can be used normally. At the same time, the entire simulation process can also be used for teaching and guidance for students. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an otoacoustic simulator according to this utility model;

[0015] Figure 2 This is a rear sectional view of an otoacoustic simulator according to this utility model;

[0016] Figure 3 This is a schematic diagram showing the connection of the various modules of the otoacoustic simulator of this utility model.

[0017] Explanation of reference numerals in the attached diagram: 1-base, 11-display screen, 12-controller, 13-socket, 2-probe, 3-human head model, 4-simulated ear canal, 5-audio generation module, 6-processing module, 7-indicator light, 8-detection module, 9-acquisition module. Detailed Implementation

[0018] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can be described as the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-3As shown, this utility model discloses an otoacoustic emission simulator, including a base 1 and a probe 2 for otoacoustic emission detection. The base 1 is equipped with a control chip, a display screen 11, and a controller 12, all connected to the control chip. The probe 2 is electrically connected to the control chip via a processing module 6. A human head model 3 is mounted on the base 1, with simulated ear canals 4 corresponding to the two sides of the ear. An audio generation module 5 is located inside the simulated ear canals 4, corresponding to the cochlea. The audio generation module 5 is electrically connected to the control chip and is used to output simulated sound. A detection module 8 is also located inside the simulated ear canals 4, used to detect the position of the probe 2 inserted into the external auditory canal of the simulated ear canal 4. This utility model can simulate the process of otoacoustic emission detection for a subject. It can be modified by adding a human head model 3 to an existing otoacoustic emission detector to simulate the entire process from the subject wearing the probe 2 to the instrument's detection and analysis of the results. The probe 2 can be electrically connected to the processing module 6 via a wired connection to the base 1. Before the actual test, the device simulates different otoacoustic signals inside the head model 3 using the audio generation module 5. After simulating the loss and reflection after passing through the simulated ear canal 4, the probe 2 detects the otoacoustic signal and analyzes it through the processing module 6. The processing module 6 can be an existing time-frequency conversion module or similar structure. The detected otoacoustic signal is displayed on the display screen 11 in the time domain or frequency domain. This allows for comparison with the simulated sound signal output by the audio generation module 5, thereby testing the sensitivity of some probes 2 and the analytical accuracy of the testing instrument, ensuring that the otoacoustic detector can be used normally. At the same time, this entire simulation process can also be used for teaching and guiding students on otoacoustic detection.

[0021] Furthermore, indicator lights 7 are provided at the eye positions of the head model 3. The audio generation module 5 and indicator lights 7 on the same side are electrically connected to each other. Indicator lights 7 are used to indicate whether the audio generation module 5 outputs simulated sound. Since the simulated ear-sound signal is weak, the feedback from indicator lights 7 can effectively determine whether the audio generation module 5 has received an output signal, and can also be used to compare the sensitivity of the probe 2 in receiving simulated ear-sound. Specifically, indicator lights 7 are also electrically connected to the detection module 8, and indicator lights 7 contain at least two colors. When the detection module 8 detects that the probe 2 is in the appropriate position, indicator lights 7 display one color, and when the audio generation module 5 outputs simulated sound, indicator lights 7 display another color. During use, the probe 2 must be correctly placed into the relatively sealed simulated ear canal 4. The detection module 8 uses methods such as laser detection to determine whether the probe 2 is placed in place and facing the eardrum of the simulated ear canal 4. When it is worn stably and accurately, indicator lights 7 light up, indicating that the next step of outputting simulated sound can be performed. After the sound is output, the output status is displayed. Indicator lights 7 can also be used to provide corresponding prompts when the position of the probe 2 is changed by external force.

[0022] Additionally, the base 1 houses a data acquisition module 9. This module 9 is connected to the probe 2 via the processing module 6 and to the audio generation module 5 via the control chip. The acquisition module 9 records the detected otoacoustic signal data and instructs the audio generation module 5 to output the corresponding simulated sound. This device can utilize only the detection components—the probe 2, processing module 6, and display screen 11—to directly perform otoacoustic detection on the subject using the probe 2. The acquisition module 9 stores these practical applications and records the corresponding data. Later, during simulated use, the control chip reads the data and simulates it using the audio generation module 5, serving as the otoacoustic signal for the simulated test.

[0023] In one embodiment, the base 1 is provided with a socket 13, through which the human head model 3 is mounted on the base 1. An interface is formed in the middle of the socket 13, allowing the audio generation module 5 and the processing module 6 to be electrically connected to the control chip respectively. The human head model 3 is detachably connected via the socket 13, simultaneously establishing electrical connections between the modules. This is particularly important for the audio generation module 5 and the processing module 6, which need to transmit signals to the control chip within the base 1 and supply power to the modules, facilitating the storage of the device and the positioning and installation of the human head model 3. The sides of the socket 13 are made of a soft rubber layer, providing insulation, and this soft rubber layer forms multiple annular protrusions, ensuring a more secure installation of the human head model 3.

[0024] In addition, there are two displays 11, one on the left and one on the right. The controller 12 includes an adjustment knob, a start button, and a synchronization lever. A power switch is also provided on the side of the base 1. The displays 11 can display the corresponding data for different simulated sounds set for the left and right ears. They can also display the simulated otoacoustic signal output and the detected and analyzed otoacoustic signal data on the two displays 11 for comparison. The controller 12, in addition to the basic adjustment knob and the start button for selecting different modes, can also directly synchronize the adjustment of both ears via the synchronization lever. The power switch controls the overall circuit on / off. Furthermore, the back of the base 1 has an interface for connecting other audio input and output devices. In addition to the otoacoustic tester base 1 itself selecting and adjusting specific otoacoustic signals and the simulated otoacoustic data collected and stored by the acquisition module 9, audio input and output devices can be connected to the back of the base 1. The host computer can input the required test sound into this device for simulation testing through the audio generation module 5 and probe 2, etc.

[0025] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application.

[0026] The positional relationships described in the figures are for illustrative purposes only and should not be construed as limiting this patent. Clearly, the above embodiments of this utility model are merely examples to clearly illustrate the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. An ear sound simulator, characterized by The device includes a base (1) and a probe (2) for otoacoustic emission detection. The base (1) is equipped with a control chip and a display screen (11) and a controller (12) connected to the control chip. The probe (2) is electrically connected to the control chip through a processing module (6). The base (1) is equipped with a human head model (3). The human head model (3) is equipped with simulated ear canals (4) on both sides of its ears. The simulated ear canals (4) are equipped with an audio generation module (5) at the position corresponding to the cochlea. The audio generation module (5) is electrically connected to the control chip and is used to output simulated sound. The simulated ear canals (4) are also equipped with a detection module (8). The detection module (8) is used to detect the position of the probe (2) inserted into the external ear canal of the simulated ear canal (4).

2. An ear simulator according to claim 1, wherein The head model (3) has an indicator light (7) at the eye position. The audio generation module (5) and the indicator light (7) on the same side are electrically connected to each other. The indicator light (7) is used to reflect whether the audio generation module (5) outputs simulated sound.

3. An ear simulator according to claim 2, wherein The indicator light (7) is also electrically connected to the detection module (8), and the indicator light (7) contains at least two colors. When the detection module (8) detects that the probe (2) is in the appropriate position, the indicator light (7) displays one color, and when the audio generation module (5) outputs analog sound, the indicator light (7) displays another color.

4. An ear simulator according to claim 1, wherein The base (1) is equipped with a data acquisition module (9). The data acquisition module (9) is connected to the probe (2) through the processing module (6) and to the audio generation module (5) through the control chip. The data acquisition module (9) is used to record the detected otoacoustic signal data and can instruct the audio generation module (5) to output the corresponding analog sound.

5. An ear simulator according to claim 1, wherein The base (1) is provided with a socket (13), and the human head model (3) is installed on the base (1) through the socket (13). An interface is formed in the middle of the socket (13) so that the audio generation module (5) can be electrically connected to the control chip.

6. An ear simulator according to claim 5, wherein The side of the socket (13) is a soft rubber layer, and the soft rubber layer forms multiple annular protrusions.

7. An ear simulator according to any one of claims 1-6, c h a r a c t e r i z e d in that The display screens (11) are two in number and are located on the left and right sides respectively. The controller (12) includes an adjustment knob, a start button and a synchronization lever. The base (1) is also provided with a power switch on its side.

8. An ear simulator according to claim 7, wherein The back of the base (1) is provided with an interface for connecting other audio input and output devices, and the interface is electrically connected to the control chip.

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