Headset

Abstract

The utility model provides a headphone, and relates to the field of audio equipment. The headphone comprises a headband, a comparison module, a first component and a second component, each of the first part and the second part comprises an earmuff; at least one of the first part and the second part comprises a first microphone and a second microphone; the first microphone and the second microphone are arranged at the edge of the earmuff; wherein the distance difference between a first distance from the first microphone to a preset point and a second distance from the second microphone to the preset point is greater than a preset distance; and the comparison module is respectively connected with the first microphone and the second microphone, and is used for receiving and comparing the audio signals respectively acquired by the first microphone and the second microphone, and outputting a comparison result representing whether a user speaks or not according to the audio signals. According to the headphone, the accuracy of judging whether a user wearing the headphone speaks automatically or not can be improved.

Description

Technical Field

[0001] The present application relates to the field of audio equipment, and in particular, to a headset. Background Art

[0002] The headphones have earmuffs. When the user wears the headphones, the earmuffs will cover the user's ears, thereby effectively reducing and isolating external sounds. Combined with the active noise reduction module in the headphones, the headphones can have a higher noise reduction effect.

[0003] When wearing headphones, there is still a need to receive external voices or external environmental sounds, such as conversations, alarm sounds, etc. Therefore, a transparent transmission module is currently set in the headphones. The transparent transmission module collects audio signals through an external microphone, and then processes the audio signals and plays them through the speakers in the headphones, thereby making it easier for the wearer to hear external voices. At present, headphones usually turn on the transparent transmission function after hearing the voices of others. In this case, the microphone in the headphones is mainly used to collect the sound of the remote sound source, and has a better recognition effect on the sound emitted by the distant sound source.

[0004] In some scenarios, the wearer will actively talk to others, and the transparent transmission module needs to be turned on in time to listen to the voices of others. Therefore, in addition to detecting the voices of others, the headset also needs to detect the wearer's self-talk and control the opening of the transparent transmission module according to the self-talk situation. Among them, self-talk refers to the situation where the user wearing the headset speaks first.

[0005] However, current headsets do not take into account the wearer's own speech. Therefore, headsets are usually not equipped with microphones that are mainly used to collect the user's own near-end sound source. The audio signals collected by the microphones that collect far-end sound cannot accurately distinguish the differences in the audio signals of the near-end sound source, and thus cannot determine whether the user is talking to himself. Therefore, existing headsets have a low recognition accuracy rate for the user's own speech, making it impossible for the headset to timely determine whether the user is in a conversation scene, and thus unable to timely activate the transparent transmission function, affecting the user's ability to listen to external sounds. Utility Model Content

[0006] In view of this, the present application aims to provide a headset to improve the accuracy of the user's self-speech.

[0007] In a first aspect, an embodiment of the present application provides a headset, comprising: a headband, a comparison module, a first component and a second component; the first component and the second component are connected through the headband; the first component and the second component both comprise: an earmuff; at least one of the first component and the second component comprises a first microphone and a second microphone; the first microphone and the second microphone are arranged at the edge of the earmuff; wherein the distance difference between a first distance from the first microphone to a preset point and a second distance from the second microphone to the preset point is greater than a preset spacing; the preset point is a preset position of a user's mouth when the headset is in a wearing state; at least one of the first component and the second component is provided with the comparison module, the comparison module is respectively connected to the first microphone and the second microphone, and is used to receive and compare the audio signals collected by the first microphone and the second microphone respectively, and output a comparison result representing whether the user is speaking according to the audio signal.

[0008] In the embodiment of the present application, in the same component, a first microphone and a second microphone are arranged at the edge of the earmuff, and the external sound can be collected respectively to obtain different audio signals. The sound will change with the change of distance, so for the same sound, the audio signals collected at different positions are different. When the user speaks to himself, the sound is emitted by the user's mouth, and the preset point is the position of the user's mouth when the preset headset is in the wearing state, that is, the position of the user's mouth is simulated, and then the distance difference between the first distance and the second distance is greater than the preset spacing, so that the positions of the first microphone and the second microphone can be significantly different, and the distances between the first microphone and the second microphone can be significantly different, and the audio signals collected by the first microphone and the second microphone can be more obviously different. Therefore, the audio signals collected by different microphones can be compared through the comparison module to determine whether the user is speaking to himself, and because the audio signals collected by the first microphone and the second microphone have a large difference, it can help to improve the accuracy of determining whether the user is speaking.

[0009] In one embodiment, in the same component, the first direction in which the second microphone points to the first microphone matches a preset direction; the preset direction is the direction in which the first microphone points to the preset point when the first microphone and the preset point are mapped on a preset plane, and the preset plane is a preset plane parallel to the user's ear when the headset is in a worn state.

[0010] In an embodiment of the present application, when the first microphone and the preset point are mapped on a preset plane, the direction in which the first microphone on the preset plane points to the preset point is the preset direction, and the first direction matches the preset direction, that is, the second microphone, the first microphone, and the user's mouth are equivalent to being on the same straight line in the preset plane. When the first microphone and the second microphone are at the edge of the earmuff and the distance difference between the first distance and the second distance satisfies the preset spacing, the matching of the first direction and the preset direction can make the spacing between the first microphone and the second microphone larger, thereby making the audio signals collected by the first microphone and the second microphone more different.

[0011] In one embodiment, in the same component, center points of the first microphone, the second microphone, and the earmuff are on the same straight line.

[0012] Compared with the solution in which the first microphone, the second microphone and the center point are not on the same straight line, in the embodiment of the present application, the first microphone and the second microphone are themselves arranged on the edge of the earmuff, and the second microphone, the first microphone and the center point of the earmuff are made to be on the same straight line, so that the spacing on the earmuff can be made larger, so that the audio signals collected by the first microphone and the second microphone are more different, thereby improving the accuracy of self-speech recognition.

[0013] In one embodiment, if the angle between the first direction and the wearing direction is within a preset angle range, then the first direction matches the preset direction; the wearing direction is a horizontal direction from the back of the headset to the front on the preset plane; the preset angle range represents the direction from the user's ear to the user's mouth.

[0014] The headphones have a front and a back, the front refers to the side close to the user's face, and the back refers to the side close to the back of the user's head. The wearing direction can be understood as the horizontal direction from the back of the headphones to the front when the headphones are worn correctly. When the user wears the headphones, the wearing direction can also be the horizontal direction from the back of the headphones to the front on a preset plane. Due to the different wearing angles of the headphones by users, the positional relationship between the first microphone, the second microphone and the mouth position may be different. In addition, the positional relationship between the earmuffs and the mouths of different users is different. The changes in the above positional relationships may cause a large difference between the first direction and the preset direction when the headphones are actually worn. Therefore, in the embodiments of the present application, an angle range representing the direction from the user's ear to the user's mouth can be set. When the angle between the first direction and the wearing direction is within the preset angle range, the first direction and the preset direction can be considered to match.

[0015] In one embodiment, the preset angle range is greater than or equal to 40 degrees and less than or equal to 80 degrees.

[0016] The angle between the direction of the human ear pointing to the mouth and the horizontal direction is approximately 45°. In the embodiment of the present application, the preset angle range is between 40° and 80°, which can cover the situations of most people and meet the wearing habits of different users. After different users wear the headset, the audio signals collected by the first microphone and the second microphone can have significant differences, which helps to improve the accuracy of judging whether the user is speaking.

[0017] In one embodiment, the preset distance is at least greater than or equal to 2 cm.

[0018] The distance from a person's ear to his mouth is usually no more than 20 cm. In this embodiment, the preset distance is at least greater than or equal to 2 cm, which can make the preset distance exceed 10% of the distance from a person's ear to his mouth. As a result, the audio signals collected by different microphones can have more obvious differences, making it easier to judge whether the user is speaking.

[0019] In one embodiment, the comparison module includes: a processing unit; the processing unit is connected to the first microphone and the second microphone respectively, and the processing unit is used to obtain the audio signals collected by the first microphone and the second microphone respectively; the processing unit is also used to determine at least one of the amplitude difference, power difference or phase difference of the received audio signals collected by the first microphone and the second microphone respectively; and the processing unit is also used to output a first comparison result representing the user's speech when the amplitude difference is greater than a preset amplitude threshold, the power difference is greater than a preset power threshold, or the phase difference is greater than a preset phase threshold.

[0020] As the transmission distance increases, the phase, amplitude and power of the audio signal will change. Therefore, any one of these parameters can be used to determine the difference between different audio signals. In the embodiment of the present application, the processing unit can be used to implement the function of the corresponding comparison module. Compared with using the circuit to implement the comparison function, the complexity of the structure and the difficulty of implementation can be effectively reduced.

[0021] In one embodiment, the comparison module includes a power detection circuit, a first comparison circuit and a default signal source; the power detection circuit is connected to the first microphone and the second microphone, respectively, and is used to detect the power of the audio signals collected by the first microphone and the second microphone respectively and determine the power difference; the first comparison circuit is connected to the power detection circuit and the default signal source, and the first comparison circuit is used to compare the power difference with a preset power signal input by the default signal source, and when the power difference is greater than the preset power signal, output a first comparison result representing the user's speech.

[0022] In the embodiment of the present application, a hardware circuit is used to implement the power comparison function. The hardware circuit has higher reliability and more timely response, which helps to improve the speed and timeliness of determining whether the user is speaking.

[0023] In one embodiment, the comparison module includes an amplitude detection circuit, a second comparison circuit and a default signal source; the amplitude detection circuit is connected to the first microphone and the second microphone respectively, and is used to detect the amplitude of the audio signals collected by the first microphone and the second microphone respectively and determine the amplitude difference; the second comparison circuit is connected to the amplitude detection circuit and the default signal source, and the second comparison circuit is used to compare the amplitude difference with a preset amplitude signal input by the default signal source, and when the amplitude difference is greater than the preset amplitude signal, output a first comparison result representing the user's self-speaking.

[0024] In the embodiment of the present application, a hardware circuit is used to implement the amplitude comparison function. The hardware circuit has higher reliability and more timely response, which helps to improve the speed and timeliness of determining whether the user is speaking.

[0025] In one embodiment, the comparison module includes a phase detection circuit, a third comparison circuit and a default signal source; the phase detection circuit is connected to the first microphone and the second microphone, respectively, and is used to detect the phase of the audio signals collected by the first microphone and the second microphone respectively and determine the phase difference; the third comparison circuit is connected to the phase detection circuit and the default signal source, and the third comparison circuit is used to compare the phase difference with a preset phase signal input by the default signal source, and when the phase difference is greater than the preset phase signal, output a first comparison result representing the user's self-speaking.

[0026] In the embodiment of the present application, a hardware circuit is used to implement the phase comparison function. The hardware circuit has higher reliability and more timely response, which helps to improve the speed and timeliness of determining whether the user is speaking.

[0027] In one embodiment, the headset also includes: a transparent transmission module; and the first component and the second component both include: an external ear microphone and a speaker; the enable end of the transparent transmission module is connected to the output end of the comparison module; the enable signal of the transparent transmission module is configured as the first signal output by the comparison module; the first signal is a first comparison result representing the user's speech; the transparent transmission module is also connected to the external ear microphone and the speaker, and the transparent transmission module opens the connection channel between the external ear microphone and the speaker in the enabled state.

[0028] In the embodiment of the present application, since the comparison result of whether the user is speaking by the comparison module through the audio signals collected by the first microphone and the second microphone has a high accuracy, using the first comparison result representing the user's speaking as the first signal to enable the transparent transmission module can effectively improve the accuracy and timeliness of the activation of the transparent transmission module, thereby enabling the user to listen to the external sounds in a timely manner.

[0029] In one embodiment, the external ear microphone includes the first microphone and / or the second microphone.

[0030] In this embodiment, the first microphone or the second microphone is reused as the external ear microphone, and no additional microphone is required, thereby reducing the number of microphones and reducing costs.

[0031] In one embodiment, the headset further includes: an active noise reduction module; a shutdown control end of the active noise reduction module is connected to an output end of the comparison module; a shutdown control signal of the active noise reduction module is configured as a first signal output by the comparison module; and the first signal is a first comparison result representing the user's speech.

[0032] Turning off the active noise reduction module helps to improve the user's listening effect on external sounds. In the embodiment of the present application, after the user speaks, the active noise reduction module is turned off in time through the first signal, so that the user can hear the sounds made by others in time when communicating with others, thereby meeting the needs of communicating with others.

[0033] In one embodiment, the headset further includes: a timing circuit, the transparent transmission module and the active noise reduction module are connected to the comparison module through the timing circuit, the timing circuit performs timing when the first signal is not received, and after the timing reaches a preset time, generates a trigger signal to turn off the transparent transmission module and turn on the active noise reduction module.

[0034] In an embodiment of the present application, a timing circuit is set, and the fact that the timing circuit does not receive the first signal indicates that the user is not speaking to himself. After the user has not spoken to himself for a preset period of time, the transparent transmission module is turned off and the active noise reduction module is turned on. In this way, noise reduction can be performed in a timely manner to reduce the possibility of the user hearing noise and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 A schematic diagram of the structure of a headset provided in one embodiment of the present application;

[0037] Figure 2 A schematic diagram of the positional relationship of the internal structure of components provided in one embodiment of the present application;

[0038] Figure 3 A schematic diagram of a preset point provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of directions provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the position relationship between the center point and the microphone provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of the angle relationship provided in an embodiment of the present application;

[0042] Figure 7 A block diagram of the component structure provided for one embodiment of the present application.

[0043] Icon: headband 110; first component 120; second component 130; first microphone 210; second microphone 220; comparison module 230; transparent transmission module 240; active noise reduction module 250. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0045] See also Figure 1 , Figure 1 The schematic diagram of the structure of a headset provided in an embodiment of the present application is as follows: The headset provided in an embodiment of the present application comprises: a headband 110 , a first component 120 , and a second component 130 .

[0046] The first component 120 and the second component 130 may be the left earphone (or left component) and the right earphone (or right component) of the headset, and the headband 110 (also called "head beam") is used to connect the first component 120 and the second component 130. In some embodiments, the headband 110 may also be a retractable structure. The above structure may refer to the existing headset and will not be described here.

[0047] See also Figure 2 , Figure 2A schematic diagram of the positional relationship of the internal structure of the components provided in an embodiment of the present application, where Q is the center point of the earmuff. In the embodiment of the present application, the first component 120 and the second component 130 both include earmuffs, and at least one of the first component 120 and the second component 130 includes a first microphone 210 and a second microphone 220, that is, the first component 120 includes a first microphone and a second microphone, or the second component 130 includes a first microphone and a second microphone, or the first component includes a first microphone and a second microphone, and the second component also includes a first microphone and a second microphone.

[0048] It can be understood that in the present application, the positional relationship between the first microphone 210 and the second microphone 220 in the first component 120 and the second component 130 can be the same. Therefore, the positional relationship between the various devices in the components will be described later using one of the first component 120 and the second component 130, and the other component can be described similarly, which will not be elaborated here.

[0049] In this embodiment, the earmuff may be the outer shell of the earphone, and the earmuff may be round, square or other regular or irregular shapes, and the shape of the earmuff is not limited here.

[0050] like Figure 2 As shown, in the embodiment of the present application, the first microphone 210 and the second microphone 220 are arranged on the edge of the earmuff, and, as shown in FIG. Figure 1 As shown, a hollow structure is provided on the side frame of the earmuff, wherein part of the hollow structure is used to set the first microphone 210 and the second microphone 220, so that the first microphone 210 and the second microphone 220 can collect external sounds. When the first microphone 210 and the second microphone 220 are respectively provided above and below the earmuff, they can also be respectively referred to as the upper microphone and the lower microphone.

[0051] In the embodiment of the present application, the distance difference between the first distance from the first microphone 210 to the preset point and the second distance from the second microphone 220 to the preset point is greater than the preset distance.

[0052] In this embodiment, the preset point is the preset position of the user's mouth when the headset is in the wearing state. That is, the preset point is a hypothetical position, which can be obtained by determining the law of experimental data or modeling after different volunteers perform wearing experiments on the headset. The preset point is used to simulate the position of the user's mouth after the user wears the headset. This application facilitates the relationship between the preset point and the headset by extending the relationship between the preset point and the headset. When the headset is actually manufactured or used, the point may not exist.

[0053] In this embodiment, the distance between the first microphone 210 and the preset point is a first distance, and the distance between the second microphone 220 and the preset point is a second distance. For ease of understanding, a schematic diagram is provided for illustration. Figure 3 , Figure 3 Schematic diagram of preset points provided in an embodiment of the present application. Assuming that the first microphone 210 is a microphone closer to the user's mouth and the second microphone 220 is a microphone farther from the user's mouth, Figure 3 In the example, point A can be used to represent the location of the first microphone 210, point B can be used to represent the location of the second microphone 220, and P can be used to represent the preset point. The distance between the APs is the first distance, and the distance between the BPs is the second distance.

[0054] It can be understood that the propagation of sound is affected by distance. As the distance increases, the sound will attenuate. In an embodiment of the present application, the distance difference between the first distance and the second distance is greater than the preset distance, so that the audio signal collected by the second microphone 220 shows a more obvious difference in attenuation due to the different distances compared to the audio signal collected by the first microphone 210, so that based on the difference, it can be determined whether the user is speaking.

[0055] In this embodiment, the preset distance is used to make the audio signals collected by the first microphone 210 and the second microphone 220 respectively have a large difference, so as to judge whether the user is speaking based on the difference. Therefore, in principle, the larger the distance difference between the first distance and the second distance, the better, that is, but due to the limitation of the headphone, therefore, in the embodiment of the present application, the maximum distance between the two does not exceed the size of the earmuff. In this embodiment, the preset distance can be an empirical value, for example, 2cm, 2.5cm, 3cm, etc. In other embodiments, the preset distance can also be determined according to the sampling frequency of the first microphone 210 and the second microphone 220. It can be understood that the speed of sound is fixed, and the preset interval can be determined by combining the speed of sound, the sampling frequency of the microphone and the preset time interval required for sampling the two. Therefore, in the embodiment of the present application, the specific value of the preset interval is not limited.

[0056] In addition, it should be noted that the above settings are mainly used to improve the accuracy of judging whether the user is speaking. In the embodiment of the present application, the difference between the audio signals collected by the first microphone 210 and the second microphone 220 can be used to judge whether the user is speaking because the distance between the sound source (when the headset is worn by the user, the sound source is the user's mouth) and the first microphone 210 is closer than the distance between the same sound source and the second microphone 220, which makes the attenuation of the sound collected by the second microphone 220 at the preset distance more obvious, so the audio signals collected by the two have a large difference. When the sound source is at the far end, for example, in a normal communication scenario, other people usually keep a long distance from the user (compared to when the sound source is the user himself), so that when the first microphone 210 and the second microphone 220 collect the sound of others, the sound has been greatly attenuated, which makes the difference between the audio signals collected by the two may be low. Therefore, the embodiment provided by the present application is more helpful to identify whether the user wearing the headset is speaking. When judging whether others are speaking, it can be combined with other methods, which will not be expanded here.

[0057] In one embodiment of the present application, in the same component, the first direction in which the second microphone 220 points to the first microphone 210 matches a preset direction; the preset direction is the direction in which the first microphone points to the preset point when the first microphone and the preset point are mapped on a preset plane of the first component and the second component.

[0058] like Figure 1 As shown, the first component and the second component usually have the same shape, such as both are circular, elliptical, square, etc., and the two can be symmetrical about a symmetry plane. In this embodiment, the first microphone, the second microphone and the preset point can be mapped on the symmetry plane, and the direction in which the first microphone (or "the mapping point of the first microphone") points to the preset point (or "the mapping point of the preset point") is the preset direction. In the embodiment of the present application, the preset direction can also be the direction in which the first microphone points to the preset point when the first microphone and the preset point are mapped on a preset plane, wherein the preset plane is a preset plane parallel to the user's ears when the headset is in a worn state, and the symmetry plane is parallel to the preset plane. Please refer to Figure 2 and Figure 3 , Figure 2 The plane of the first component 120 shown can be understood as a preset plane. Similarly, Figure 3 The left plane or the plane where the central axis is located can be understood as a preset plane, and the right plane and the aforementioned symmetry plane are parallel to the preset plane. In addition, in actual headphone products, the preset plane is often parallel to the surface of the earmuff.

[0059] At the same time, the left earphone and the right earphone are usually distinguished on the headset. When the headset is worn correctly, the left earphone covers the user's left ear, the right earphone covers the user's right ear, and the headband 110 is on the top of the user's head. At this time, it can be considered that the user wears the headset correctly. At this time, the back of the headset is located on the side of the back of the user's head, and the front of the headset is located on the side of the user's face. The horizontal direction from the back of the headset to the front can be used as the wearing direction. The wearing direction can also be the horizontal direction from the back of the headset to the front on a preset plane.

[0060] It should be noted that the wearing direction objectively exists after the earphones are manufactured, and the wearing direction still exists even if the earphones are not worn by the user. Therefore, in the embodiments of the present application, whether the user wears headphones should not affect the wearing direction.

[0061] Therefore, in the embodiment of the present application, the preset direction can be referred to as a direction mapped on the plane where the wearing direction is located, and the first microphone 210 points to the preset point. The plane where the wearing direction is located refers to the side plane of the headset. Similarly, the first direction is also a direction mapped on the side plane.

[0062] See also Figure 4 , Figure 4 A schematic diagram of directions provided for an embodiment of the present application, wherein S0 is the wearing direction, S1 is the first direction, S2 is the preset direction, and Q is the center point of the earmuff.

[0063] In the embodiment of the present application, matching the first direction with the preset direction helps to increase the distance difference between the first distance and the second distance. Figure 4 For example, if the first microphone 210 and the second microphone 220 are respectively arranged at A' and B', at this time, the first direction of the first microphone 210 matches the preset direction, and the distance difference between the first distance and the second distance is the diameter A'B' of the circular earmuff. If the first microphone 210 and the second microphone 220 are respectively arranged at A and B, the distance difference between the first distance and the second distance will be significantly smaller than the diameter of the earmuff (the specific calculation can refer to the prior art and will not be elaborated here).

[0064] Therefore, in an embodiment of the present application, the first direction in which the second microphone 220 points to the first microphone 210 matches the preset direction, which can help increase the distance difference between the first distance and the second distance, thereby increasing the difference in audio signals collected by the first microphone 210 and the second microphone 220.

[0065] In some embodiments of the present application, when the first direction matches the preset direction, the preset distance is greater than or equal to 2 cm.

[0066] On the side plane, the distance between the human ear and the mouth is usually no more than 20 cm. When the preset distance is greater than or equal to 2 cm, the preset distance has exceeded 10% of the distance between the human ear and the mouth. The sound will show a more obvious change due to attenuation. Therefore, the audio signals collected by the first microphone 210 and the second microphone 220 can show obvious differences.

[0067] When actually worn, the positions of the preset points may be different due to the different face shapes of different users. In addition, different users may wear the headphones at an angle. Therefore, in the embodiments of the present application, if the angle between the first direction and the wearing direction is within the preset angle range, the first direction can be considered to match the preset direction.

[0068] Due to the above differences, the first direction and the preset direction cannot be exactly the same. Therefore, in the embodiments of the present application, as long as the angle between the two is within a certain range, it can be considered that the two match.

[0069] In this embodiment, the preset angle range is used to characterize the direction from the user's ear to the user's mouth. The preset angle range can be obtained by collecting the angles between the direction from the ear to the mouth of different volunteers and the wearing direction / the direction perpendicular to the ground.

[0070] See also Figure 6 , Figure 6 Schematic diagram of the angle relationship provided in an embodiment of the present application. Generally, the direction from the ear to the mouth is perpendicular to the ground (such as Figure 6 The angle S3) shown is about 45°. If the user does not wear the headset in the forward direction and there is a deviation, the range can be expanded, such as 10° to 50°.

[0071] The wearing direction is perpendicular to the ground. Conversely, the angle between the ear and the mouth and the wearing direction can be greater than or equal to 40 degrees and less than or equal to 80 degrees. Figure 6 As shown, the angle m and the angle n range from 40° to 80°.

[0072] In an embodiment of the present application, the first microphone 210, the second microphone 220 and the center point of the earmuff can also be arranged on the same straight line in the same component, that is, the line connecting the first microphone 210 and the second microphone 220 passes through the center point of the earmuff.

[0073] See also Figure 5 , Figure 5 Schematic diagram of the position relationship between the center point and the microphone provided in an embodiment of the present application. Figure 5As shown, when the first direction matches the preset direction, the distance difference between the first distance and the second distance is the distance between the two microphones, and if the line AB connecting the first microphone 210 and the second microphone 220 passes through the center point of the earmuff, the distance difference is equal to the diameter of the earmuff, and if the line A'B' connecting the first microphone 210 and the second microphone 220 does not pass through the center point of the earmuff, the distance difference A'B' is less than the diameter AB.

[0074] Therefore, in an embodiment of the present application, arranging the center points of the first microphone 210, the second microphone 220 and the earmuff on the same straight line also helps to increase the distance difference between the first distance and the second distance, thereby increasing the difference in audio signals collected by the first microphone 210 and the second microphone 220.

[0075] Through the above-mentioned setting of the first microphone 210 and the second microphone 220, the first microphone 210 and the second microphone 220 can collect audio signals with differences, but the audio signals alone cannot determine whether the user is speaking. Therefore, in the embodiment of the present application, a comparison module 230 can also be set inside the first component 120 and the second component 130. The comparison module 230 can receive and compare the audio signals collected by the first microphone 210 and the second microphone 220, respectively, and output a comparison result representing whether the user is speaking according to the audio signals. Among them, the comparison module 230 can be set in one of the first component 120 or the second component 130. The component with the comparison module 230 can directly connect the first microphone 210 and the second microphone 220 to the comparison module 230. The component without the comparison module 230 can transmit the audio signals collected by the first microphone 210 and the second microphone 220 in the component to the comparison module 230 through the line in the headband 110 or the wireless communication method.

[0076] In some other embodiments, the first component 120 and the second component 130 are both provided with a comparison module 230 , and the first microphone 210 and the second microphone 220 in each component are connected to the comparison module 230 in the component.

[0077] The comparison module 230 compares the audio signals collected by the first microphone 210 and the second microphone 220 , so as to determine whether the user is speaking, that is, to determine whether the user is speaking to himself.

[0078] In the embodiment of the present application, the comparison module 230 has many implementation methods. For example, in an optional implementation, the comparison module 230 may include a processing unit. The processing unit may be a central processing unit, a neural network processor, and the like.

[0079] The processing unit is connected to the first microphone 210 and the second microphone 220 respectively, and the processing unit is used to obtain the audio signals collected by the first microphone 210 and the second microphone 220 respectively. The processing unit may be directly connected to the first microphone 210 and the second microphone 220. In some embodiments, the processing unit may be indirectly connected to the first microphone 210 and the second microphone 220. For example, the audio signals collected by the first microphone 210 and the second microphone 220 are stored in a memory, and the processing unit may call the audio signals from the memory.

[0080] The attenuation of sound will affect the amplitude, phase and power of the audio signal. Therefore, in the embodiment of the present application, it is possible to determine whether the user is speaking by the difference in the amplitude, phase and power of the audio signal collected by the two microphones.

[0081] Therefore, in this embodiment, the processing unit can also be used to determine at least one of the amplitude difference, power difference or phase difference of the received audio signals collected by the first microphone 210 and the second microphone 220; and the processing unit is also used to output a first comparison result representing that the user is speaking when the amplitude difference is greater than a preset amplitude threshold, the power difference is greater than a preset power threshold or the phase difference is greater than a preset phase threshold. On the contrary, if the amplitude difference is less than or equal to the preset amplitude threshold, the power difference is much less than or equal to the preset power threshold and the phase difference is less than or equal to the preset phase threshold, a second comparison result representing that the user is not speaking is output. The processing unit can use existing programs to implement the above functions, which will not be expanded here.

[0082] In other embodiments, the processor may be a neural network processor, in which a neural network model is configured to input the audio signals collected by each microphone into the neural network model, and determine whether the user is speaking through the neural network processor.

[0083] Accordingly, the above comparison function can also be implemented using hardware circuits.

[0084] For example, in an optional embodiment, the comparison module 230 includes a power detection circuit, a first comparison circuit and a default signal source; the power detection circuit is connected to the first microphone 210 and the second microphone 220, respectively, and is used to detect the power of the audio signals collected by the first microphone 210 and the second microphone 220 respectively and determine the power difference; the first comparison circuit is connected to the power detection circuit and the default signal source, and the first comparison circuit is used to compare the power difference with a preset power signal input by the default signal source, and when the power difference is greater than the preset power signal, outputs a first comparison result representing the user's self-speaking.

[0085] The power detection circuit can use an existing circuit, and there are also various circuits for determining the power difference, such as a difference circuit or a digital circuit that can implement the above-mentioned power difference determination, etc. The default signal source is used to output a preset power signal to the first comparison circuit, so that the first comparison circuit can compare the power difference with the preset power signal, thereby outputting a comparison result of whether the user is speaking.

[0086] Similarly, the comparison module 230 may also include an amplitude detection circuit, a second comparison circuit and a default signal source; the amplitude detection circuit is connected to the first microphone 210 and the second microphone 220 respectively, and is used to detect the amplitude of the audio signals collected by the first microphone 210 and the second microphone 220 and determine the amplitude difference; the second comparison circuit is connected to the amplitude detection circuit and the default signal source, and the second comparison circuit is used to compare the amplitude difference with the preset amplitude signal input by the default signal source, and when the amplitude difference is greater than the preset amplitude signal, the first comparison result representing the user's self-speaking is output. And, the comparison module 230 may also include a phase detection circuit, a third comparison circuit and a default signal source; the phase detection circuit is connected to the first microphone 210 and the second microphone 220 respectively, and is used to detect the phase of the audio signals collected by the first microphone 210 and the second microphone 220 and determine the phase difference; the third comparison circuit is connected to the phase detection circuit and the default signal source, and the third comparison circuit is used to compare the phase difference with the preset phase signal input by the default signal source, and when the phase difference is greater than the preset phase signal, the first comparison result representing the user's speaking is output.

[0087] Similarly, all the circuits mentioned above, such as the power detection circuit, the phase detection circuit, the amplitude detection circuit, the first comparison circuit, the second comparison circuit, the third comparison circuit and the default signal source can be implemented using existing circuits and will not be elaborated here.

[0088] The hardware circuit has the characteristics of high reliability and fast response. In the embodiment of the present application, the use of the hardware circuit to implement the function of the above-mentioned comparison module 230 can effectively improve the reliability and timeliness of judging whether the user is speaking, thereby improving the user experience.

[0089] See also Figure 7 , Figure 7 A block diagram of the components provided in an embodiment of the present application. In an embodiment of the present application, the headset may further include a transparent transmission module 240, which may be disposed in one of the first component 120 or the second component 130, or may be disposed in the first component 120 and the second component 130, respectively. Each component further includes an external ear microphone and a speaker.

[0090] The transparent transmission module 240 is connected to the external ear microphone and the speaker. The transparent transmission module 240 conducts the connection channel between the external ear microphone and the speaker in the enabled state. In this embodiment, the transparent transmission module 240 is used to receive and amplify the audio signal collected by the external ear microphone, and finally play it in the ear through the speaker after being processed by the filter in the transparent transmission module 240, so that the wearer of the headset can better receive external voice or external environmental noise or various external alarm sounds, etc., so that various external sounds are less blocked by the headset and can be heard by the user. The function and structure of the transparent transmission module 240 can refer to the existing technology and will not be expanded here.

[0091] In some embodiments of the present application, the external microphone may be the first microphone 210 or the second microphone 220, or may include both the first microphone 210 and the second microphone 220. By multiplexing the microphones, the number of microphones used can be reduced, and the cost and structural complexity can be reduced.

[0092] In an embodiment of the present application, the enable end of the transparent transmission module 240 is connected to the output end of the comparison module 230, and the enable signal of the transparent transmission module 240 is configured so that the first signal output by the comparison module 230 is the first comparison result representing the user's speech. That is, when the comparison module 230 determines that the first comparison result of the user's speech is obtained, it will output a first signal, which will be sent to the enable end of the transparent transmission module 240, so that the transparent transmission module 240 is enabled and turned on, thereby starting the transparent transmission function. In this way, the user can listen to the sound of the outside world in time.

[0093] In some embodiments, the headset further includes: an active noise reduction module 250; a shutdown control terminal of the active noise reduction module 250 is connected to an output terminal of the comparison module 230; a shutdown control signal of the active noise reduction module 250 is configured as a first signal output by the comparison module 230; and the first signal is a first comparison result representing the user's speech.

[0094] The active noise reduction module 250 will reduce the noise of external sounds, and the structure of the active noise reduction module 250 can refer to the existing technology. When the transparent transmission module 240 is turned on, keeping the active noise reduction turned on will make the transparent transmission module 240 not effective and affect the power consumption of the headset. Therefore, in the embodiment of the present application, the shutdown control signal of the active noise reduction module 250 is also configured as the first signal output by the comparison module 230. When the comparison module 230 determines that the user is speaking, the active noise reduction module 250 is turned off and the transparent transmission module 240 is turned on at the same time to improve the user's effect of listening to external sounds.

[0095] In addition, the headset may also include: a timing circuit, the transparent transmission module 240 and the active noise reduction module 250 are connected to the comparison module 230 through the timing circuit, the timing circuit performs timing when the first signal is not received, and after the timing reaches a preset time, a trigger signal is generated to turn off the transparent transmission module 240 and turn on the active noise reduction module 250.

[0096] In this embodiment, the timing circuit can be implemented by using some existing chips and devices, or some existing timing circuits can be configured in the earmuffs. The specific structure of the timing circuit can refer to the existing technology and will not be expanded here. In other embodiments, the function of the timing circuit can also be implemented by using the timing program of the processor in the headset.

[0097] Through the timing circuit, the transparent transmission module 240 can be turned off and the active noise reduction module 250 can be turned on in time to improve the noise reduction effect of the headset and enhance the user experience.

[0098] It should be noted that the present application is mainly aimed at the scenario where the user speaks to himself. When the user speaks to others, the result of the other person's speech can also be judged to output the first signal, so as to timely judge whether it is necessary to turn on or off the transparent transmission module 240 and the active noise reduction module 250.

[0099] The technical features of the above embodiments can be freely combined without conflict, and the embodiments obtained by the combination are included in the protection scope of this application.

[0100] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0101] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such articles or devices. In the absence of more restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the article or device including the element.

Claims

1. A headset, characterized in that: include: A headband, a comparison module, a first component, and a second component; The first component and the second component are connected by the headband; The first component and the second component both include: an earmuff; at least one of the first component and the second component includes a first microphone and a second microphone; The first microphone and the second microphone are arranged at the edge of the earmuff; Wherein, the difference between the first distance from the first microphone to the preset point and the second distance from the second microphone to the preset point is greater than a preset distance; the preset point is the preset position of the user's mouth when the headset is in a wearing state; At least one of the first component and the second component is configured with the comparison module, and the comparison module is connected to the first microphone and the second microphone respectively, and is used to receive and compare the audio signals collected by the first microphone and the second microphone respectively, and output a comparison result representing whether the user is speaking according to the audio signal.

2. The headset according to claim 1, characterized in that: In the same component, the first direction in which the second microphone points to the first microphone matches a preset direction; the preset direction is the direction in which the first microphone points to the preset point when the first microphone and the preset point are mapped on a preset plane, and the preset plane is a preset plane parallel to the user's ear when the headset is in a worn state.

3. The headset according to claim 2, characterized in that: In the same component, the center points of the first microphone, the second microphone and the earmuff are on the same straight line.

4. The headset according to claim 2, characterized in that: If the angle between the first direction and the wearing direction is within a preset angle range, the first direction matches the preset direction; the wearing direction is a horizontal direction from the back of the headset to the front on the preset plane; The preset angle range represents the direction from the user's ear to the user's mouth.

5. The headset according to claim 4, characterized in that: The preset angle range is greater than or equal to 40 degrees and less than or equal to 80 degrees.

6. The headset according to claim 2, characterized in that: The preset distance is at least greater than or equal to 2 cm.

7. The headset according to claim 1, characterized in that: The comparison module includes: a processing unit; The processing unit is connected to the first microphone and the second microphone respectively, and the processing unit is used to obtain the audio signals collected by the first microphone and the second microphone respectively; The processing unit is further used to determine at least one of an amplitude difference, a power difference or a phase difference of the received audio signals respectively collected by the first microphone and the second microphone; Furthermore, the processing unit is further configured to output a first comparison result representing the user's speech when at least one of the amplitude difference is greater than a preset amplitude threshold, the power difference is greater than a preset power threshold, or the phase difference is greater than a preset phase threshold.

8. The headset according to claim 1, characterized in that: The comparison module includes a power detection circuit, a first comparison circuit and a default signal source; The power detection circuit is connected to the first microphone and the second microphone respectively, and is used to detect the power of the audio signals collected by the first microphone and the second microphone respectively and determine the power difference; The first comparison circuit is connected to the power detection circuit and the default signal source. The first comparison circuit is used to compare the power difference with a preset power signal input by the default signal source, and output a first comparison result representing the user's speech when the power difference is greater than the preset power signal.

9. The headset according to claim 1, characterized in that: The comparison module includes an amplitude detection circuit, a second comparison circuit and a default signal source; The amplitude detection circuit is connected to the first microphone and the second microphone respectively, and is used to detect the amplitude of the audio signal collected by the first microphone and the second microphone respectively and determine the amplitude difference; The second comparison circuit is connected to the amplitude detection circuit and the default signal source. The second comparison circuit is used to compare the amplitude difference with a preset amplitude signal input by the default signal source, and output a first comparison result representing the user's speech when the amplitude difference is greater than the preset amplitude signal.

10. The headset according to claim 1, characterized in that: The comparison module includes a phase detection circuit, a third comparison circuit and a default signal source; The phase detection circuit is connected to the first microphone and the second microphone respectively, and is used to detect the phase of the audio signal collected by the first microphone and the second microphone respectively and determine the phase difference; The third comparison circuit is connected to the phase detection circuit and the default signal source. The third comparison circuit is used to compare the phase difference with a preset phase signal input by the default signal source, and output a first comparison result representing the user's speech when the phase difference is greater than the preset phase signal.

11. The headset according to any one of claims 1 to 10, characterized in that: The headset further includes: a transparent transmission module; and the first component and the second component both include: an external ear microphone and a speaker; The enable terminal of the transparent transmission module is connected to the output terminal of the comparison module; The enable signal of the transparent transmission module is configured as the first signal output by the comparison module; the first signal is a first comparison result representing the user's speech; The transparent transmission module is also connected to the external ear microphone and the speaker. When the transparent transmission module is enabled, the connection channel between the external ear microphone and the speaker is opened.

12. The headset according to claim 11, characterized in that: The external ear microphone includes the first microphone and / or the second microphone.

13. The headset according to claim 11, characterized in that: The headset further includes: an active noise reduction module; a shutdown control terminal of the active noise reduction module is connected to the output terminal of the comparison module; The shutdown control signal of the active noise reduction module is configured as the first signal output by the comparison module.

14. The headset according to claim 13, characterized in that: The headset also includes: a timing circuit, the transparent transmission module and the active noise reduction module are connected to the comparison module through the timing circuit, the timing circuit performs timing when the first signal is not received, and after the timing reaches a preset time, generates a trigger signal to turn off the transparent transmission module and turn on the active noise reduction module.

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