WO2019114398A1

WO2019114398A1 - Microphone neck ring earphone

Info

Publication number: WO2019114398A1
Application number: PCT/CN2018/110271
Authority: WO
Inventors: 陈运基; 刘�东
Original assignee: 安克创新科技股份有限公司
Priority date: 2017-12-13
Filing date: 2018-10-15
Publication date: 2019-06-20
Also published as: CN108235164B; CN108235164A

Abstract

Disclosed in the present application is a microphone neck ring earphone. The microphone neck ring earphone comprises a neck ring, and an earphone body. When the microphone neck ring earphone is properly worn, the neck ring is worn on the neck of a user and the earphone body is worn in the ears of the user. The neck ring comprises: a first microphone array disposed at a first end of the neck ring. The first microphone array at least comprises a first microphone and a second microphone for picking up first voice signals around the first microphone array. When the microphone neck ring earphone is properly worn, a connecting wire for the first microphone and the second microphone is directed at the mouth of the user. The microphone neck ring earphone can reduce the affects of environmental noises on a call.

Description

Microphone neck ring earphone

[Technical Field]

The present application relates to the field of earphone technology, and in particular to a microphone neck ring earphone.

【Background technique】

With the continuous development of science and technology, the use of headphones is increasing.

The earphone is a conversion unit for receiving the electrical signal from the media player, and then converting it into an audible sound wave by using a speaker close to the ear, and independently listening to the sound without affecting others.

The inventors of the present application have found in long-term research that people tend to be in an unquiet environment during a call, such as a market, a factory, or a vehicle. The noise of these public places often causes the headphones to transmit voice signals. At the beginning, the voice signal at the source is unclear, which seriously affects the quality of the call and the user experience.

[Summary of the Invention]

The technical problem mainly solved by the present application is to provide a microphone neck ring earphone, which can reduce the influence of environmental noise on the call.

In order to solve the above technical problem, a technical solution adopted by the present application is to provide a microphone neck ring earphone, including a neck ring and a headphone body. When the microphone neck ring earphone is normally worn, the neck ring is worn by the user. a neck portion, the earphone body being worn in a user's ear, wherein the neck ring includes: a first microphone array disposed at a first end of the neck ring, the first microphone array including at least a microphone and a second microphone for picking up a first voice signal around the first microphone array, wherein when the microphone neck ring earphone is normally worn, the first microphone is connected to the second microphone The line points to the user's mouth.

The beneficial effects of the present application are: different from the prior art, the microphone neck ring earphone of the present application includes a neck ring and a headphone body, and when the microphone neck ring earphone is normally worn, the neck ring is worn on the neck of the user. The earphone body is worn in the user's ear, wherein the neck ring includes: a first microphone array disposed at the first end of the neck ring, the first microphone array including at least a first microphone and a second microphone for picking the first A first voice signal around the microphone array, wherein when the microphone neck ring earphone is normally worn, the connection of the first microphone and the second microphone is directed to the mouth of the user. Through the microphone neck ring earphone, the sound signal emitted by the user can be directionally picked up, and the influence of environmental noise on the call is reduced.

[Description of the Drawings]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work. among them:

1 is a schematic view of a microphone neck ring earphone according to an embodiment of the present application;

Figure 2 is an enlarged schematic view of a portion A in Figure 1;

3 is a schematic view showing the internal structure of a microphone neck ring earphone in the embodiment of FIG. 1;

4 is a schematic diagram showing the external structure of another embodiment of the microphone neck ring earphone of the present application;

FIG. 5 is a schematic diagram showing the internal structure of the microphone neck ring earphone in the embodiment of FIG. 4. FIG.

【Detailed ways】

Referring to FIG. 1 , FIG. 1 is a schematic diagram of a microphone neck ring earphone according to an embodiment of the present invention. The microphone neck ring earphone includes: a neck ring 10 and a headphone body (not shown), when the microphone neck ring earphone is When worn normally, the neck ring 10 is worn on the neck of the user, and the earphone body is worn in the user's ear. Alternatively, the neck ring 10 and the earphone body are connected by wires (not shown). The neck ring 10 includes a first microphone array 11 .

The first microphone array 11 is disposed at the first end 1 of the neck ring for picking up the first voice signal around the first microphone array 11, wherein the first voice signal includes both the sound signal sent by the user during the call. The sound signal is a useful signal that needs to be processed and transmitted by the microphone neck ring earphone, and also includes a noise signal of the surrounding environment of the user during the call.

In order to better collect the surrounding voice signals, the first microphone array 11 includes at least a first microphone 111 and a second microphone 112, that is, the first microphone array 11 includes at least two microphones, wherein the models of the microphones may be the same, Can be different.

Wherein, when the microphone neck ring earphone is normally worn, the connection between the first microphone 111 and the second microphone 112 is directed to the mouth of the user, so that the purpose of collecting the sound signal emitted by the user mouth can be achieved, and the environmental noise is reduced. The impact of the call.

Optionally, in order to prevent the microphone in the first microphone array 11 from being blocked at the same time, referring to FIG. 2, FIG. 2 is an enlarged view of A in FIG. 1, wherein the first microphone 111 and the second microphone 112 are located at the first end. The different sides of 1 reduce the probability that the microphones in the first microphone array 11 are simultaneously occluded, ensuring their picking up of the speech signal.

Usually, the user wears accessories according to personal preference and wears clothes of different heights, and these accessories and collars may affect the microphone array to pick up the voice signal. Therefore, optional, continue to refer to Figure 2, At least one microphone of the microphone array 11 is located at the first side 101 of the first end 1 (the second microphone 112 is located on the first side 101 in FIG. 2), and the first side 101 is specifically a microphone collar When the earphone is normally worn, the first end portion 1 is away from the side of the user's head, that is, away from the side of the user's collar and the jewelry, thereby preventing the influence of the user's collar and accessories on the pickup of the voice signal.

Continuing to refer to FIG. 1, optionally, in order to ensure that the first microphone array 11 can be close to the mouth of the user, when the microphone neck ring earphone is normally worn, the first microphone array 11 is located between the mouth and the chest of the user.

Referring to FIG. 3, FIG. 3 is a schematic diagram of the internal structure of the microphone neck ring earphone in the embodiment of FIG. 1. The microphone neck ring earphone further includes: a processor 12.

The processor 12 is coupled to the first microphone array 11 for receiving the first voice signal transmitted by the first microphone array 11.

Optionally, in this embodiment, when the microphone neck ring earphone is normally worn, the distance between the first microphone 111 and the user mouth is smaller than the distance between the second microphone 112 and the user mouth, that is, the first A microphone 111 is closer to the mouth of the user than the second microphone 112. At this time, the processor 12 cancels the noise signal in the first microphone voice signal picked up by the first microphone 111 according to the second microphone voice signal picked up by the second microphone 112. .

Specifically, since the first microphone array 11 includes at least two microphones, different microphones pick up different voice signals, so the first microphone 111 near the user's mouth is mainly used to pick up the sound signal emitted by the user, and away from the user mouth. The second microphone 112 of the portion is mainly used for picking up the noise signal, and when the processor 12 receives the first voice signal, the first microphone voice signal picked up by the first microphone 111 and the second microphone voice signal picked up by the second microphone 112 The phase difference, frequency band, waveform variation law, etc., use an algorithm to eliminate the noise signal in the first microphone voice signal to reduce the influence of environmental noise on the call.

Optionally, in order to more conveniently use the algorithm to perform noise cancellation processing on the first microphone voice signal, a spacing between the first microphone 111 and the second microphone 112 is greater than a first threshold, when a spacing between the microphones is greater than the first At the threshold value, the difference between each sub-speech signal in the first speech signal is more obvious, thereby facilitating the use of an algorithm to achieve the purpose of eliminating the noise signal.

Specifically, the first threshold is determined by the wavelength of the voice signal. For example, in an application scenario, the first threshold is determined to be 10 mm according to the wavelength of the voice signal, that is, for the first microphone array 11, the spacing between the microphones included therein is greater than 10 mm.

4 and FIG. 5, FIG. 4 is a schematic diagram showing the external structure of another embodiment of the microphone neck ring earphone of the present application, and FIG. 5 is a schematic view showing the internal structure of the microphone neck ring earphone of FIG.

In this embodiment, the microphone neck ring earphone further includes: a second microphone array 13.

The second microphone array 13 is disposed at the second end portion 2 of the neck ring 10, and the second end portion 2 is opposite to the position of the first end portion 1, specifically, when the microphone neck ring earphone is normally worn, the first The end 1 and the second end 2 are located on different sides of the mouth of the user.

The second microphone array 13 includes at least two microphones 133 and a fourth microphone 134, that is, the second microphone array 13 includes at least two microphones for picking up the second voice signal around the second microphone array 13, A voice signal is the same, and the second voice signal also includes a sound signal and a noise signal. Optionally, the second microphone array 13 has the same number of microphones as the first microphone array 11.

Optionally, the structure and the position of the microphone in the second microphone array 13 are the same as those of the microphone in the first microphone array 11. For details, refer to the above, and details are not described herein.

In this embodiment, the processor 12 is connected to the first microphone array 11 and the second microphone array 13, respectively, according to the received first voice signal transmitted by the first microphone array 11 and the second voice signal sent by the second microphone array 13. The deviation of the user's head is judged, and the microphone array close to the user's head is used as the pickup main body. Wherein, the microphone array close to the user's head is used as the sound pickup body: the voice signal picked up by the microphone array close to the user's head is taken as the main signal, and the voice signal picked up by the microphone array far away from the user's head is used as the reference signal. The main signal is corrected by the reference signal compensation, thereby obtaining the final transmitted speech signal. Specifically, the processor 12 uses the data of the speech signal picked up by the microphone array close to the user's head as the main data, so as to be away from the user's head. The data of the voice signal picked up by the microphone array is reference data, and is processed by referring to the data compensation correction main data to obtain a final transmitted voice signal, for example, when the first microphone array 11 is closer to the user's head than the second microphone array 13. When the data of the first voice signal: phase, intensity, frequency band, etc. is the main data, the data of the second voice signal: phase, intensity, frequency band, etc. are used as reference data, and the reference data is used for the first voice signal. The various data are compensated and corrected to compensate the corrected first speech signal The final voice signal. Among them, the compensation correction includes: strengthening the signal strength of the sound signal frequency band, reducing the signal strength of the noise frequency band, and the like.

Generally speaking, during the conversation, the user will inevitably turn or shake the head, and it is difficult to maintain the position in the center between the first end 1 and the second end 2 of the microphone neckphone, even in some noisy In the environment, the user deliberately prefers to talk to a certain side. At this time, the voice signal picked up by the microphone array near the user's head side is clearer, and the noise component is less, and the language picked up from the microphone array on the user's head side is in a language. There are many noise components in the signal, and the signal-to-noise ratio is relatively small. In the prior art, the speech signal picked up by the microphones on both sides is generally processed in the same proportion to obtain the final transmitted speech signal, and then the speech signal finally obtained at this time has more noise components, and the signal-to-noise ratio is relatively small. It is easy to cause a drop in call quality. In the present embodiment, the microphone array close to the user's head is used as the sound pickup body, which can reduce the influence of environmental noise on the call, improve the signal-to-noise ratio of the voice signal, and obtain a clear voice signal.

Optionally, the processor 12 determines the user's head bias according to the signal strength of the first voice signal and the second voice signal. Specifically, the signal strength of the voice signal picked up by the microphone array close to the user's head is greater than the signal strength of the voice signal picked up by the microphone array away from the user's head.

Optionally, the processor 12 may further determine a user's head bias according to the phase of the first voice signal and the second voice signal. In particular, the phase of the speech signal picked up by the microphone array remote from the user's head lags behind the phase of the speech signal picked up by the microphone array near the user's head.

Of course, the processor 12 can also determine the user's head bias in combination with the signal strength, phase, and signal strength and phase of the second voice signal, and details are not described herein.

Optionally, the processor 12 is further configured to locate the noise source according to the first voice signal and the second voice signal, and increase the volume in the earplugs located near the direction of the noise source, and decrease in the earplugs away from the direction of the noise source. volume.

Specifically, the frequency bands of the respective signals received by the microphones in the respective arrays of the first microphone array 11 and the second microphone array 13 and the variation rules of the respective signal waveforms obtain respective noise signals in the second voice signals of the first voice signal. And further locating the noise source according to parameters such as signal strength and phase difference of the noise signal, wherein the initial direction of the noise source may be first determined according to the signal strength of the noise signal, and then the phase difference is combined, and the noise source is determined by an algorithm. Position and increase the volume in the earbuds near the noise source direction, and reduce the volume in the earplugs away from the noise source to ensure that the signal intensity heard on both sides of the user is the same, allowing the user to hear the balanced sound.

In summary, different from the prior art, the microphone neck ring earphone in the present application sets the connection between the first microphone and the second microphone in the first microphone array to point to the mouth of the user, and can directionally pick up the user. The sound signal is sent to reduce the impact of environmental noise on the call.

The above description is only the embodiment of the present application, and thus does not limit the scope of the patent application, and the equivalent structure or equivalent process transformation of the specification and the drawings of the present application, or directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of this application.

Claims

A microphone neck ring earphone includes a neck ring and a headphone body, the neck ring being worn on a neck of a user when the microphone neck ring earphone is normally worn, the earphone body being worn in a user's ear, Characterized in that the neck ring comprises:

a first microphone array disposed at a first end of the neck ring, the first microphone array including at least a first microphone and a second microphone for picking up a first voice signal around the first microphone array,

Wherein, when the microphone neck ring earphone is normally worn, the connection between the first microphone and the second microphone is directed to the mouth of the user.
A microphone neck ring earphone according to claim 1, wherein

The first microphone and the second microphone are located on different sides of the first end.
A microphone neck ring earphone according to claim 1, wherein

The first microphone array is located between the user's mouth and chest when the microphone neck ring earphone is properly worn.
A microphone neck ring earphone according to claim 1, wherein

The second microphone is located at a first side of the first end portion, and the first side is when the microphone neck ring earphone is normally worn, the first end portion is away from a side of the user's head, and When the microphone neck ring earphone is normally worn, the distance between the first microphone and the user's mouth is smaller than the distance between the second microphone and the user's mouth.
A microphone neck ring earphone according to claim 4, wherein

The processor further includes a processor, configured to receive the first voice signal sent by the first microphone array, and eliminate the second microphone voice signal according to the second microphone A noise signal in the first microphone voice signal picked up by the first microphone.
A microphone neck ring earphone according to claim 5, wherein

The spacing between the first microphone and the second microphone is greater than a first threshold.
A microphone neck ring earphone according to claim 6, wherein

The first threshold is 10 mm.
The microphone neck ring earphone according to claim 5, further comprising:

a second microphone array disposed at a second end of the neck ring, the second end being opposite to a position of the first end, the second microphone array comprising at least a third microphone and a fourth microphone For picking up a second voice signal around the second microphone array,

The processor is connected to the first microphone array and the second microphone array, and is determined according to the received first voice signal sent by the first microphone array and the second voice signal sent by the second microphone array. The user's head is biased to take the microphone array close to the user's head as the pickup body.
A microphone neck ring earphone according to claim 8, wherein

The processor is further configured to locate a noise source according to the first voice signal and the second voice signal, and increase a volume in an earplug near a direction in which the noise source is located, away from the direction of the noise source. Reduce the volume in the earbuds.
A microphone neck ring earphone according to claim 8, wherein

The processor determines a head bias of the user according to a signal strength of the first voice signal and the second voice signal and/or a phase of the first voice signal and the second voice signal.