Voice call enhancing earphone
By combining the call microphone and bone voiceprint sensor in the headset to collect and superimpose signals, the problem of unclear voice signals in the headset in noisy environments is solved, which significantly improves the call quality and achieves high-quality voice calls.
Patent Information
- Application Number
- CN202323489012.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-20
AI Technical Summary
Existing headphones are difficult to clearly extract voice signals in noisy environments, affecting call quality.
It adopts a structure including a Bluetooth SOC module, an audio amplifier, a speaker, a call microphone and a bone soundprint sensor. The bone soundprint sensor collects bone vibration waves in human ears and superimposes them with the call microphone signal to improve the clarity of the voice signal.
It realizes the acquisition of high-definition voice signals in noisy environments, significantly improving the quality of calls, making the voice clearer and easier to be understood by the receiver.
Smart Images
Figure CN222339568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an earphone, in particular to an earphone for enhancing voice communication. Background Art
[0002] Most of the current earphone products are small in size, easy to carry, and can be used to listen to music, make calls, etc., and have gradually become a necessity in people's lives. However, the call effect of existing earphones has always been unsatisfactory, especially in relatively noisy environments. The ambient sound will be superimposed on the voice, thereby reducing the clarity of the voice. The traditional noise reduction method is to use a built-in noise reduction algorithm, but the ability of such an algorithm is limited. In many noisy environments, it is not possible to clearly extract the voice signal, which in turn affects the normal call function. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a voice call enhancement headset which can extract high-definition voice signals and thus improve the call quality in view of the deficiencies of the prior art.
[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions.
[0005] A voice call enhancement headset, comprising: a Bluetooth SOC module, used to establish a Bluetooth connection with a smart terminal; an audio amplifier, connected to the Bluetooth SOC module, the audio amplifier is used to amplify and output an audio signal received by the Bluetooth SOC module; a speaker, connected to the audio amplifier, the speaker is used to restore the audio signal amplified by the audio amplifier to sound; a call microphone, connected to the Bluetooth SOC module, the call microphone is used to collect sound and transmit it to the Bluetooth SOC module in the form of an electrical signal; a bone voiceprint sensor, connected to the Bluetooth SOC module, the bone voiceprint sensor is used to collect vibration waves of human ear bones and transmit them to the Bluetooth SOC module in the form of an electrical signal.
[0006] Preferably, it comprises an earphone body and an ear hook, the Bluetooth SOC module, the audio amplifier, the speaker and the call microphone are all arranged in the earphone body, and the bone voiceprint sensor is arranged on the ear hook.
[0007] Preferably, the bone voiceprint sensor is arranged at one end of the ear hook close to the earphone body.
[0008] Preferably, the bone voiceprint sensor is arranged at a position close to the uppermost end of the ear hook.
[0009] Preferably, the bone voiceprint sensor is arranged at a position close to the lower end of the ear hook.
[0010] Preferably, the Bluetooth SOC module is connected to an RF module, a human-computer interaction module and a charging management module.
[0011] In the voice call enhancement headset disclosed by the utility model, the Bluetooth SOC module, the audio amplifier, the speaker and the call microphone constitute the basic structure of the Bluetooth headset, the audio signal received by the Bluetooth SOC module is amplified and restored by the audio amplifier and the speaker, the call voice is collected by the call microphone and then transmitted to the smart terminal by the Bluetooth SOC module, on this basis, the utility model adds a bone voiceprint sensor, the bone voiceprint sensor fits the human ear, can collect the bone vibration wave of the human ear, when the user speaks, the bone vibration wave is sensed by the bone voiceprint sensor, then converted into an electrical signal and then transmitted to the Bluetooth SOC module, the Bluetooth SOC module superimposes the signals collected by the call microphone and the bone voiceprint sensor and uploads them to the smart terminal, thereby obtaining a high-definition human voice signal and realizing a high-quality call function. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a front view of the voice call enhancement headset of the utility model;
[0013] Figure 2 It is a schematic diagram of the speech signal acquisition process;
[0014] Figure 3 It is the algorithm flow chart of the speech signal acquisition process;
[0015] Figure 4 The present invention is a block diagram of the voice call enhancement headset. DETAILED DESCRIPTION
[0016] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments.
[0017] The utility model discloses a voice call enhancement headset, see Figure 1 and Figure 4 , which include:
[0018] Bluetooth SOC module 1, used to establish a Bluetooth connection with a smart terminal;
[0019] An audio amplifier 2, connected to the Bluetooth SOC module 1, and used for amplifying the audio signal received by the Bluetooth SOC module 1 and outputting the amplified audio signal;
[0020] A loudspeaker 3 is connected to the audio amplifier 2, and is used to restore the audio signal amplified by the audio amplifier 2 to sound;
[0021] A call microphone 4, connected to the Bluetooth SOC module 1, and used to collect sound and transmit it to the Bluetooth SOC module 1 in the form of electrical signals;
[0022] The bone voiceprint sensor 5 is connected to the Bluetooth SOC module 1 . The bone voiceprint sensor 5 is used to collect bone vibration waves of the human ear and transmit them to the Bluetooth SOC module 1 in the form of electrical signals.
[0023] In the above structure, the Bluetooth SOC module 1, the audio amplifier 2, the speaker 3 and the call microphone 4 constitute the basic structure of the Bluetooth headset. The audio signal received by the Bluetooth SOC module 1 is amplified and restored by the audio amplifier 2 and the speaker 3, and the call voice is collected by the call microphone 4 and then transmitted to the smart terminal by the Bluetooth SOC module 1. On this basis, the utility model adds a bone voiceprint sensor 5. The bone voiceprint sensor 5 fits the human ear and can collect bone vibration waves of the human ear. When the user speaks, the bone vibration waves are sensed by the bone voiceprint sensor 5, and then converted into electrical signals and then transmitted to the Bluetooth SOC module 1. The Bluetooth SOC module 1 superimposes the signals collected by the call microphone 4 and the bone voiceprint sensor 5 and uploads them to the smart terminal, thereby obtaining high-definition human voice signals and realizing high-quality call functions.
[0024] For the main structure of the earphone of this utility model, please refer to Figure 1 This embodiment includes an earphone body 6 and an ear hook 7, the Bluetooth SOC module 1, the audio amplifier 2, the speaker 3 and the call microphone 4 are all arranged in the earphone body 6, and the bone voiceprint sensor 5 is arranged on the ear hook 7.
[0025] For the specific working principle of the earphone of this utility model, please refer to Figure 2 and Figure 3 When communicating, the earphone mainly relies on the call microphone arranged inside the earphone shell to collect / pick up the voice signal and feed it back to the main control of the Bluetooth SOC module 1. At the same time, the bone voiceprint sensor configured on the ear hook of the system will collect the bone vibration signal of the human ear when speaking, convert it into an electrical signal and feed it back to the main control. The main control will superimpose the two received signals and send them to the receiving end through the mobile phone network. In this process, because the bone voiceprint sensor is not affected by the external environment, the signal it collects is a pure voice signal, and its phase and bandwidth are basically consistent with the human voice signal collected by the call microphone. Therefore, when two groups of voice signals with the same phase and bandwidth are superimposed, the loudness (amplitude) of the voice signal will increase. When the overall signal is played back, the loudness of the voice signal will increase, thereby improving the call quality (that is, the receiving party can hear more clearly).
[0026] Specifically, when making a call, the call microphone generates two electrical signals, one is the human voice signal V voice1 , one is the environmental noise V noise1 At the same time, the bone voiceprint sensor will also generate an electrical signal, that is, the human voice signal V voice2 , because the bone voiceprint sensor will not be affected by environmental noise, the V voice2 Signal and V voice1 The phase and bandwidth are basically the same, so V voice1 and V voice2 Add them together to get a louder V for a human voice. voice3 , so we have:
[0027] V 通话Mic +V 骨声纹 =(V voice1 +V nosie1 )+V voice2 ≈V voice3 +V nosie 1;
[0028] Based on the above calculations, high-definition human voice signals can be obtained, thereby achieving high-quality calls.
[0029] See also Figure 1 , about the preferred position of the bone voiceprint sensor 5:
[0030] The bone voiceprint sensor 5 is disposed at one end of the ear hook 7 close to the earphone body 6;
[0031] Alternatively, the bone voiceprint sensor 5 is disposed at a position close to the uppermost end of the ear hook 7;
[0032] Alternatively, the bone voiceprint sensor 5 is disposed at a position close to the lower end of the ear hook 7 .
[0033] In brief, see Figure 1 The bone voiceprint sensor 5 can be arranged at one end of the ear hook 7 close to the earphone body 6, that is, Figure 1 The position of the middle solid line can also be set at the uppermost or lowermost end of the ear hook 7, that is, Figure 1 The positions of the two dotted lines in the middle, the above three positions can be selected according to actual design requirements.
[0034] Regarding other basic structures of the earphone, in this embodiment, the Bluetooth SOC module 1 is connected to the RF module 8, the human-computer interaction module 9 and the charging management module 10.
[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.
Claims
1. A voice call enhancement headset, characterized in that: Included are: A Bluetooth SOC module (1), used for establishing a Bluetooth connection with a smart terminal; An audio amplifier (2) connected to the Bluetooth SOC module (1), the audio amplifier (2) being used to amplify the audio signal received by the Bluetooth SOC module (1) and then output it; A loudspeaker (3) connected to the audio amplifier (2), the loudspeaker (3) being used to restore the audio signal amplified by the audio amplifier (2) into sound; A call microphone (4), connected to the Bluetooth SOC module (1), the call microphone (4) being used to collect sound and transmit it to the Bluetooth SOC module (1) in the form of an electrical signal; A bone voiceprint sensor (5) is connected to the Bluetooth SOC module (1), and the bone voiceprint sensor (5) is used to collect bone vibration waves of a human ear and transmit them to the Bluetooth SOC module (1) in the form of electrical signals.
2. The voice call enhancement headset according to claim 1, characterized in that: The headset comprises an earphone body (6) and an ear hook (7); the Bluetooth SOC module (1), the audio amplifier (2), the speaker (3) and the call microphone (4) are all arranged in the earphone body (6); and the bone voiceprint sensor (5) is arranged on the ear hook (7).
3. The voice call enhancement headset according to claim 2, characterized in that: The bone voiceprint sensor (5) is arranged at one end of the ear hook (7) close to the earphone body (6).
4. The voice call enhancement headset according to claim 2, characterized in that: The bone voiceprint sensor (5) is arranged at a position close to the uppermost end of the ear hook (7).
5. The voice call enhancement headset according to claim 2, characterized in that: The bone voiceprint sensor (5) is arranged at a position close to the lower end of the ear hook (7).
6. The voice call enhancement headset according to claim 1, characterized in that: The Bluetooth SOC module (1) is connected to an RF module (8), a human-computer interaction module (9) and a charging management module (10).