Bone conduction earphone with sound production structure

Abstract

The invention discloses a bone conduction earphone with a sound production structure, and relates to the technical field of bone conduction earphones. The bone conduction earphone with the sound production structure comprises a bone conduction module, a Bluetooth communication module, a power supply management module used for providing power support for the bone conduction earphone, an audio processing module used for processing an audio signal and converting the audio signal into a suitable signal format, and a control module used for playing a control role. The bone conduction module is provided with a sound production structure, the sound production structure comprises a vibrator used for converting a sound signal into mechanical vibration, a shell arranged outside the vibrator and used for protecting and supporting, and a fixing device used for fixing the bone conduction earphone, and the shell is arranged outside the vibrator in a sleeving manner; the bone conduction module, the Bluetooth communication module, the power management module, the audio processing module and the control module are adopted to realize power supply, sound signal conversion, sound signal transmission and overall control of the bone conduction earphone, so that the sound quality effect of the bone conduction earphone is ensured.

Description

Technical Field

[0001] The present invention relates to the field of bone conduction earphones, and in particular to a bone conduction earphone with a sound-generating structure. Background Art

[0002] Bone conduction headphones convert sound into mechanical vibrations, which transmit sound waves directly through the human skull, bony labyrinth, inner ear lymph, spiral organ and auditory center, thereby bypassing the external auditory canal and eardrum to achieve sound transmission; the bone conduction headphones with a sound-generating structure in the prior art do not achieve power supply, sound signal conversion, sound signal transmission and overall control of the bone conduction headphones by adopting a bone conduction module, a Bluetooth communication module, a power management module, an audio processing module and a control module, which is not convenient for ensuring the sound quality of the bone conduction headphones; therefore, in view of this situation, there is an urgent need to develop a bone conduction headset with a sound-generating structure to meet the needs of actual use. Summary of the invention

[0003] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a bone conduction headset with a sound-generating structure, which adopts a bone conduction module, a Bluetooth communication module, a power management module, an audio processing module and a control module to realize the power supply, sound signal conversion, sound signal transmission and overall control of the bone conduction headset, thereby ensuring the sound quality effect of the bone conduction headset.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions: A bone conduction headset with a sound-generating structure comprises a bone conduction module for converting sound signals into mechanical vibrations and stimulating auditory nerves to generate sound perception, a Bluetooth communication module for processing wireless signals for data transmission, a power management module for providing power support for the bone conduction headset, an audio processing module for processing audio signals and converting them into a suitable signal format, and a control module for controlling the bone conduction headset, wherein the bone conduction module, the Bluetooth communication module, the power management module and the audio processing module are all electrically connected to the control module; the bone conduction module has a sound-generating structure, wherein the sound-generating structure comprises a vibrator for converting sound signals into mechanical vibrations, a shell for being arranged outside the vibrator for protection and support, and a fixing device for fixing the bone conduction headset, wherein the shell is sleeved outside the vibrator.

[0005] As a preferred solution: the vibrator is made of piezoelectric ceramics, the fixing device is a conductive column, the conductive column is made of a silicone plate, and the thickness of the silicone plate is 3-5mm; the operation method between the bone conduction module, the Bluetooth communication module and the audio processing module is: the bone conduction earphone first receives the sound signal, the sound signal is transmitted to the bone conduction earphone through the Bluetooth communication module, the audio processing module converts the received sound signal into a driving signal suitable for driving the bone conduction module, the bone conduction module driving signal acts on the sound-generating structure to cause it to generate mechanical vibration, and then transmit it to the user.

[0006] As a preferred solution: the audio processing module includes a sound signal enhancement unit and a noise reduction unit, the bone conduction module converts the sound signal into mechanical vibration, and the sound signal enhancement unit uses a sound enhancement algorithm to process the sound signal.

[0007] As a preferred solution: the sound enhancement algorithm is specifically as follows: bass enhancement; using a high-pass filter to remove all low-frequency content that cannot be reproduced; stereo enhancement: enhancing stereo by processing stereo signals.

[0008] As a preferred solution: the noise reduction unit adopts active noise reduction or passive noise reduction. The active noise reduction adopts electronic components and sensors to detect and offset noise; the passive noise reduction adopts sealing and sound-absorbing materials for blocking.

[0009] As a preferred solution: the sound absorbing material includes glass wool, cotton wool, mineral wool and sponge, and the sound absorbing material is arranged between the shell and the fixing device.

[0010] As a preferred solution: the noise reduction unit performs noise reduction specifically by detecting the noise frequency band, designing a linear filter, and applying the designed linear filter to the noisy signal to eliminate or reduce the noise.

[0011] As a preferred solution: the noise reduction unit adopts a real-time noise reduction algorithm to perform noise reduction, specifically: collecting signals, converting the noisy signal from the time domain to the frequency domain, obtaining its spectrum representation, using a statistical model to estimate the noise in real time, estimating the probability of speech existence, calculating and applying the gain value to the spectrum of the noisy signal, and obtaining the spectrum after noise reduction.

[0012] As a preferred solution: the calculation includes signal-to-noise ratio calculation: calculating a priori and a posteriori signal-to-noise ratios based on the noise estimate and the frequency spectrum of the noisy signal.

[0013] As a preferred solution: the calculation includes gain calculation: according to the gain function, the gain value of each frequency point is calculated.

[0014] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the power supply, sound signal conversion, sound signal transmission and overall control of the bone conduction earphones are realized by adopting a bone conduction module, a Bluetooth communication module, a power management module, an audio processing module and a control module, thereby ensuring the sound quality effect of the bone conduction earphones; the conversion between sound signals and vibration signals is realized by adopting a sound-generating structure, thereby facilitating the transmission of sound signals; and the bone conduction earphones are conveniently fixed by adopting a vibrator, a housing and a fixing device, thereby facilitating the user's convenient use.

[0015] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a principle flow chart of the bone conduction earphone with a sound-generating structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the bone conduction earphone with a sound-generating structure according to the present invention from a first-person perspective; Figure 3 A schematic diagram of the third perspective structure of the bone conduction earphone with a sound-generating structure of the present invention; Figure 4 This is an exploded view of the bone conduction earphone with sound-generating structure of the present invention.

[0017] Description of the accompanying drawings: In the figure: 10, vibrator; 20, housing; 30, fixing device. DETAILED DESCRIPTION

[0018] The present invention Figure 1 As shown in FIG4 , a bone conduction headset with a sound-generating structure includes a bone conduction module for converting sound signals into mechanical vibrations and stimulating the auditory nerve to generate sound perception, a Bluetooth communication module for processing wireless signals for data transmission, a power management module for providing power support for the bone conduction headset, an audio processing module for processing audio signals and converting them into a suitable signal format, and a control module for controlling the audio signals, wherein: The bone conduction module, Bluetooth communication module, power management module and audio processing module are all electrically connected to the control module; the bone conduction module has a sound-generating structure, which includes a vibrator 10 for converting sound signals into mechanical vibrations, a shell 20 for being arranged outside the vibrator 10 for protection and support, and a fixing device 30 for fixing the bone conduction earphone, and the shell 20 is sleeved on the outside of the vibrator 10.

[0019] The power management module provides electrical energy, the control module includes control functions such as power management, Bluetooth connection, volume adjustment, song switching, etc. of the headphones, the Bluetooth communication module realizes wireless connection with external devices, and the audio processing module enhances the received sound signal and performs noise reduction processing. The processed sound signal is transmitted to the bone conduction module. The sound-generating structure of the bone conduction module is responsible for converting the received sound signal into mechanical vibration and transmitting it to the inner ear through the bones. The sound-generating structure is close to the user's bones to ensure effective sound transmission.

[0020] The bone conduction earphones are powered, sound signal converted, sound signal transmitted and overall controlled by adopting a bone conduction module, a Bluetooth communication module, a power management module, an audio processing module and a control module, thereby ensuring the sound quality of the bone conduction earphones. The sound signal and vibration signal are converted by adopting a sound-generating structure, thereby facilitating the transmission of sound signals. The bone conduction earphones are easily fixed by adopting a vibrator 10, a housing 20 and a fixing device 30, thereby facilitating the user's convenient use.

[0021] The vibrator 10 is made of piezoelectric ceramics, the fixing device 30 is a conductive column, and the conductive column is made of a silicone plate with a thickness of 3-5 mm; the operation method between the bone conduction module, the Bluetooth communication module and the audio processing module is as follows: the bone conduction earphone first receives a sound signal, and the sound signal is transmitted to the bone conduction earphone through the Bluetooth communication module. The audio processing module converts the received sound signal into a driving signal suitable for driving the bone conduction module. The bone conduction module driving signal acts on the sound-generating structure to cause it to generate mechanical vibration, which is then transmitted to the user.

[0022] The audio processing module includes a sound signal enhancement unit and a noise reduction unit. The bone conduction module converts the sound signal into mechanical vibration, and the sound signal enhancement unit processes the sound signal using a sound enhancement algorithm. By using the sound signal enhancement unit and the noise reduction unit, the sound signal is enhanced and the noise is effectively processed, thereby ensuring the effective transmission of the sound signal.

[0023] The sound enhancement algorithm is specifically as follows: bass enhancement; use of a high-pass filter to remove all low-frequency content that cannot be reproduced; stereo enhancement: stereo enhancement by processing stereo signals.

[0024] The noise reduction unit adopts active noise reduction or passive noise reduction. The active noise reduction adopts electronic components and sensors to detect and offset noise; the passive noise reduction adopts sealing and sound-absorbing materials for blocking; both active noise reduction and passive noise reduction can reduce noise and improve user experience.

[0025] The sound absorbing material includes glass wool, cotton wool, mineral wool and sponge, and the sound absorbing material is arranged between the shell 20 and the fixing device 30. The sound absorbing material is used to achieve material isolation of noise, thereby having a noise blocking effect.

[0026] The noise reduction unit performs noise reduction specifically by: detecting the noise frequency band, designing a linear filter, and applying the designed linear filter to the noisy signal to eliminate or reduce the noise.

[0027] The noise reduction unit adopts a real-time noise reduction algorithm to perform noise reduction, specifically: collecting signals, converting the noisy signal from the time domain to the frequency domain, obtaining its spectrum representation, using a statistical model to estimate the noise in real time, estimating the probability of speech existence, calculating and applying the gain value to the spectrum of the noisy signal, and obtaining the spectrum after noise reduction; by adopting a real-time noise reduction algorithm to achieve effective processing of the noise signal, the influence of the noise is reduced.

[0028] The calculation includes signal-to-noise ratio calculation: based on the noise estimate and the spectrum of the noisy signal, the a priori and a posteriori signal-to-noise ratios are calculated.

[0029] The calculation includes gain calculation: according to the gain function, the gain value of each frequency point is calculated.

[0030] The method and principle of using the bone conduction earphone with a sound-generating structure are as follows: The power management module provides electrical energy, the control module includes control functions such as power management, Bluetooth connection, volume adjustment, song switching, etc. of the headphones, the Bluetooth communication module realizes wireless connection with external devices, and the audio processing module enhances the received sound signal and performs noise reduction processing. The processed sound signal is transmitted to the bone conduction module. The sound-generating structure of the bone conduction module is responsible for converting the received sound signal into mechanical vibration and transmitting it to the inner ear through the bones. The sound-generating structure is close to the user's bones to ensure effective sound transmission.

[0031] The design focus of the present invention is that the power supply, sound signal conversion, sound signal transmission and overall control of the bone conduction earphones are realized by adopting a bone conduction module, a Bluetooth communication module, a power management module, an audio processing module and a control module, thereby ensuring the sound quality effect of the bone conduction earphones; the conversion of sound signals and vibration signals is realized by adopting a sound-generating structure, thereby facilitating the transmission of sound signals; and the bone conduction earphones are conveniently fixed by adopting a vibrator, a housing and a fixing device, thereby facilitating the user's convenient use.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A bone conduction earphone with a sound-generating structure, characterized in that: It includes a bone conduction module for converting sound signals into mechanical vibrations and stimulating auditory nerves to produce sound perception, a Bluetooth communication module for processing wireless signals for data transmission, a power management module for providing power support for bone conduction headphones, an audio processing module for processing audio signals and converting them into suitable signal formats, and a control module for controlling the bone conduction module, the bone conduction module, the Bluetooth communication module, the power management module and the audio processing module are all electrically connected to the control module; the bone conduction module has a sound-generating structure, which includes a vibrator for converting sound signals into mechanical vibrations, a shell for being arranged outside the vibrator to play a protective and supporting role, and a fixing device for fixing the bone conduction headphones, and the shell is sleeved on the outside of the vibrator.

2. The bone conduction earphone with a sound-generating structure according to claim 1, characterized in that: The vibrator is made of piezoelectric ceramics, the fixing device is a conductive column, and the conductive column is made of a silicone plate with a thickness of 3-5mm; the operation method between the bone conduction module, the Bluetooth communication module and the audio processing module is: the bone conduction earphone first receives a sound signal, and the sound signal is transmitted to the bone conduction earphone through the Bluetooth communication module. The audio processing module converts the received sound signal into a driving signal suitable for driving the bone conduction module. The bone conduction module driving signal acts on the sound-generating structure to cause it to generate mechanical vibration, which is then transmitted to the user.

3. The bone conduction earphone with a sound-generating structure according to claim 1, characterized in that: The audio processing module includes a sound signal enhancement unit and a noise reduction unit. The bone conduction module converts the sound signal into mechanical vibration, and the sound signal enhancement unit processes the sound signal using a sound enhancement algorithm.

4. The bone conduction earphone with a sound-generating structure according to claim 3, characterized in that: The sound enhancement algorithm is specifically as follows: enhancing the bass; using a high-pass filter to remove all low-frequency content that cannot be reproduced; stereo enhancement: enhancing the stereo by processing the stereo signal.

5. The bone conduction earphone with a sound-generating structure according to claim 3, characterized in that: The noise reduction unit adopts active noise reduction or passive noise reduction. The active noise reduction adopts electronic components and sensors to detect and offset noise; the passive noise reduction adopts sealing and sound-absorbing materials for isolation.

6. The bone conduction earphone with a sound-generating structure according to claim 5, characterized in that: The sound absorbing material comprises glass wool, sponge, mineral wool and sponge, and the sound absorbing material is arranged between the shell and the fixing device.

7. The bone conduction earphone with a sound-generating structure according to claim 3, characterized in that: The noise reduction unit performs noise reduction specifically by: detecting the noise frequency band, designing a linear filter, and applying the designed linear filter to the noisy signal to eliminate or reduce the noise.

8. The bone conduction earphone with a sound-generating structure according to claim 3, characterized in that: The noise reduction unit uses a real-time noise reduction algorithm to perform noise reduction, specifically: collecting signals, converting the noisy signal from the time domain to the frequency domain, obtaining its spectrum representation, using a statistical model to estimate the noise in real time, estimating the probability of speech existence, calculating and applying the gain value to the spectrum of the noisy signal, and obtaining the spectrum after noise reduction.

9. The bone conduction earphone with a sound-generating structure according to claim 8, characterized in that: The calculation includes signal-to-noise ratio calculation: calculating a priori and a posteriori signal-to-noise ratios based on the noise estimate and the frequency spectrum of the noisy signal.

10. The bone conduction earphone with a sound-generating structure according to claim 8, characterized in that: The calculation includes gain calculation: according to the gain function, the gain value of each frequency point is calculated.

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