Audio receiver and intelligent terminal

Abstract

The utility model discloses an audio frequency receiver and intelligent terminal relates to microphone technical field, and audio frequency receiver includes: first receiving module is configured as receiving the first audio signal of first microphone transmission of fixed position, second receiving module is configured as receiving the second audio signal of second microphone transmission of mobile position, level detection module, and the input of level detection module is connected with the output of first receiving module, and the first end of control module is connected with the output of level detection module, and the second end of control module is connected with the output of second receiving module, wherein, control module is configured as according to the level detection result of level detection module transmission, and the audio signal of transmission to terminal system is switched between first audio signal and second audio signal. The scheme has guaranteed that the user is always obtained best reception effect when moving in different positions, has realized " person dynamic sound follows, zero operation continuation sound " intelligent experience.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to an audio receiver and a smart terminal. Background Technology

[0002] In multi-microphone applications such as live streaming, video conferencing, and stage performances, it is often necessary to frequently switch between lavalier microphones (configured for mobile recording) and desktop microphones (configured for stationary recording) to ensure clear audio transmission regardless of whether the speaker is moving or stationary. For example, when a presenter moves from their seat to the whiteboard, they need to switch from a desktop microphone to a lavalier microphone; similarly, when a speaker moves closer to or further away from the conference table, they also need to switch between a lavalier microphone and a desktop microphone. The inventors discovered that existing audio receivers transmit audio signals from different microphones to the terminal system primarily through manual operation of hardware switches or software interfaces to switch audio signals. However, this method not only requires human intervention but is also prone to interrupting audio signal transmission during the switching process, failing to meet the need for a seamless user experience. Summary of the Invention

[0003] This utility model provides an audio receiver and a smart terminal to solve the technical problem that existing audio receivers rely on manual operation to switch audio signals, which leads to interruption of audio signal transmission and fails to meet the requirements of real-time and seamless use.

[0004] In a first aspect, an audio receiver is provided, the audio receiver comprising: The first receiving module is configured to receive a first audio signal transmitted by a first microphone at a fixed position; The second receiving module is configured to receive a second audio signal transmitted by a second microphone at a moving location; A level detection module, wherein the input terminal of the level detection module is connected to the output terminal of the first receiving module; The control module has a first terminal connected to the output terminal of the level detection module and a second terminal connected to the output terminal of the second receiving module. The control module is configured to switch the audio signal transmitted to the terminal system between the first audio signal and the second audio signal based on the level detection result transmitted by the level detection module.

[0005] Optionally, the control module includes a control logic unit and an audio switching unit; The first terminal of the control logic unit is connected to the output terminal of the level detection module, and the first terminal of the audio switching unit is connected to the output terminal of the level detection module; The second end of the control logic unit is connected to the second end of the audio switching unit, and the third end of the audio switching unit is connected to the output end of the second receiving module. The control logic unit is configured to control the audio switching unit to switch the audio signal transmitted to the terminal system between the first audio signal and the second audio signal based on the level detection result transmitted by the level detection module.

[0006] Optionally, the control module further includes a delay unit; The second terminal of the control logic unit is connected to the first terminal of the delay unit, the second terminal of the delay unit is connected to the second terminal of the audio switching unit, and the third terminal of the delay unit is connected to the monitoring terminal of the level detection module. The delay unit is configured to transmit a control command to the audio switching unit when the level detection result continuously meets the switching condition for a preset duration.

[0007] Optionally, the preset duration can be in the range of 400ms to 600ms.

[0008] Optionally, the control module further includes a mute control unit; The fourth terminal of the audio switching unit is connected to the monitoring terminal of the mute control unit; The mute control unit is configured to input a mute signal to the terminal system when the audio switching unit performs a switching operation.

[0009] Optionally, the audio receiver further includes an audio output module; The fifth terminal of the audio switching unit is connected to the input terminal of the audio output module, the output terminal of the mute control unit is connected to the input terminal of the audio output module, and the output terminal of the audio output module is configured to connect to the terminal system. The audio output module is configured to transmit audio signals to the terminal system.

[0010] Optionally, the first receiving module includes a wired receiving module or a wireless receiving module.

[0011] Optionally, the second receiving module includes a wireless receiving module.

[0012] In a second aspect, a smart terminal is provided, the smart terminal including a terminal system and the audio receiver described in the first aspect above.

[0013] The beneficial effects of a technical solution provided by this utility model embodiment are as follows: By setting a first receiving module and a second receiving module, a first audio signal transmitted by a first microphone (such as a desktop microphone) and a second audio signal transmitted by a second microphone (such as a lavalier microphone) can be received respectively; a level detection module is connected to the first receiving module and can detect the relationship between the level of the first audio signal and a preset threshold to obtain a level detection result. The level detection result can indirectly reflect the distance relationship between the user and the first microphone (for example, when the level of the first audio signal is greater than or equal to the preset threshold, it is determined that the user is close to the first microphone; otherwise, it is determined that the user is far away from the first microphone); the control module switches between the two audio signals based on the level detection result, that is, switches different audio signals and transmits them to the terminal system, thereby realizing the dynamic adjustment of the audio input path. The entire process requires no hardware operation or software switching from the user. It can automatically select the most suitable audio signal and output it to the terminal system. This effectively solves the technical problem that existing audio receivers rely on manual operation to switch audio signals, which leads to audio signal transmission interruption and failure to meet the requirements of real-time and seamless use. It achieves a smooth transition without intervention, delay, or audio interruption, ensuring that users always get the best sound reception when moving in different locations. It realizes an intelligent experience of "sound follows the user, zero operation for continuous sound". Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of an audio switching system according to an embodiment of the present invention; Figure 2 This is another schematic diagram of the audio switching system in one embodiment of the present invention; Figure 3 This is a schematic diagram of an audio receiver in one embodiment of the present invention; Figure 4 This is another schematic diagram of the audio switching system in one embodiment of the present invention; Figure 5 This is a schematic diagram of a smart terminal in one embodiment of the present invention; Figure 6 This is a schematic diagram of the first microphone in one embodiment of the present invention; Figure 7 This is a schematic diagram of the second microphone in one embodiment of the present invention; Figure 8 This is another schematic diagram of the first microphone in one embodiment of the present invention; Figure 9 This is another schematic diagram of the second microphone in one embodiment of the present invention.

[0016] The labels for the attached figures are as follows: 100. Audio receiver; 101. First receiving module; 102. Second receiving module; 103. Level detection module; 104. Control module; 1041. Control logic unit; 1042. Audio switching unit; 1043. Delay unit; 1044. Mute control unit; 105. Audio output module; 200, First microphone; 201, First microphone core; 202, First signal processing module; 2021, First conditioning circuit; 2022, First analog-to-digital converter unit; 203, First output module; 300, Second microphone; 301, Second microphone core; 302, Second signal processing module; 3021, Second conditioning circuit; 3022, Second analog-to-digital converter unit; 303, Second output module; 400, Terminal System; 500, Smart Terminal. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0018] It should be understood that this invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art. In the drawings, for clarity, the dimensions of layers and regions, as well as their relative dimensions, may be exaggerated. The same reference numerals denote the same elements throughout.

[0019] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this utility model, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.

[0020] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0021] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0022] To fully understand this utility model, please refer to the following: Figures 1 to 9 The following detailed description of the structure and steps is provided to illustrate the technical solution proposed by this utility model.

[0023] Example A Firstly, please refer to Figure 1and Figure 2 An audio receiver 100 is provided, which includes a first receiving module 101, a second receiving module 102, a level detection module 103, and a control module 104.

[0024] In one embodiment, the first receiving module 101 is configured to receive a first audio signal transmitted from a first microphone 200 at a fixed location, and transmit the received first audio signal to the level detection module 103. The first receiving module 101 can be a wired receiving module, such as a 3.5mm audio jack, a TRRS interface, or a digital audio cable; it can also be a wireless receiving module, such as an audio receiving unit based on Bluetooth, 2.4GHz radio frequency, or Wi-Fi communication protocols, without specific limitations. In this embodiment, the first microphone 200 can be a desktop microphone fixedly installed on a conference table, podium, or other stationary location, configured to collect user voice and / or ambient sound when the user speaks around the fixed location.

[0025] In one embodiment, the second receiving module 102 is configured to receive a second audio signal transmitted from the second microphone 300 at a mobile location, and transmit the received second audio signal to the control module 104. The structure and communication method of the second receiving module 102 can be similar to those of the first receiving module 101, but it includes, but is not limited to, a wireless receiving module. This is because it is used for sound pickup during movement, and wired methods are not suitable for this scenario. To avoid repetition, a detailed description of the wireless receiving module will not be repeated here. The second microphone 300 can be a microphone worn on the user's chest, collar, headband, or other mobile carrier, such as a lavalier microphone, configured to collect user sounds and / or ambient sounds around the user when speaking during activity.

[0026] As can be seen, in this embodiment, the audio receiver 100 uses a dual-channel receiving structure to collect and transmit audio signals from fixed and moving positions respectively, providing basic input conditions for subsequent audio judgment and automatic switching, thereby realizing intelligent management of the sound receiving path without relying on manual intervention.

[0027] In one embodiment, the input terminal of the level detection module 103 is connected to the output terminal of the first receiving module 101. The level detection module 103 is configured to receive a first audio signal transmitted by the first receiving module 101 and detect whether the level of the first audio signal is greater than or equal to a preset threshold, thereby obtaining a level detection result. The level detection result can be used to indirectly determine the distance relationship between the user and the first microphone 200 (e.g., reflecting the distance between the user and the desktop), and the level detection result includes a first level detection result and a second level detection result. The first level detection result indicates that the user is close to the first microphone 200 (e.g., the user is close to the desktop); the second level detection result indicates that the user is far away from the first microphone 200 (e.g., the user is far away from the desktop).

[0028] Specifically, when the level of the first audio signal is greater than or equal to a preset threshold, it is determined that the user is close to the first microphone 200, thus generating a first level detection result; when the level of the first audio signal is less than the preset threshold, it is determined that the user is far away from the first microphone 200, thus generating a second level detection result. In this way, non-contact user position perception is achieved through the correlation between audio signal level and distance, providing conditions for subsequent intelligent switching of audio channels.

[0029] In one embodiment, the first terminal of the control module 104 is connected to the output terminal of the level detection module 103, and is configured to receive the level detection result and the first audio signal transmitted by the level detection module 103. The second terminal of the control module 104 is connected to the output terminal of the second receiving module 102, and is configured to receive the second audio signal transmitted by the second receiving module 102. The control module 104 is configured to switch the audio signal transmitted to the terminal system 400 between the first audio signal and the second audio signal based on the level detection result of the level detection module 103; that is, the control module 104 dynamically controls the channel switching of the audio signal according to the received level detection result.

[0030] Specifically, when the level detection result is the first level detection result, the control module 104 controls the first receiving module 101 to continue receiving the first audio signal from the first microphone 200, and controls the second receiving module 102 to stop receiving the second audio signal; at this time, the received first audio signal will be transmitted to the terminal system 400. Conversely, when the level detection result is the second level detection result, the control module 104 controls the second receiving module 102 to receive the second audio signal from the second microphone 300, and controls the first receiving module 101 to stop receiving the first audio signal; the received second audio signal will then be transmitted to the terminal system 400. In this way, the system can automatically sense the user's relative position and complete the audio signal switching between microphones during the user's movement from a fixed position (such as a desktop) to other positions, or from a moving state back to a fixed position, achieving a true "voice follows the user" effect. It no longer relies on manual button or software operation to switch audio channels, effectively avoiding audio interruption problems caused by human negligence, switching delays, or misoperation, ensuring that the terminal system 400 always receives a continuous, stable, and clear audio signal, greatly improving the voice interaction experience in multiple scenarios.

[0031] In summary, the present invention provides a technical solution comprising: a first receiving module 101 configured to receive a first audio signal transmitted by a first microphone 200 at a fixed position; a second receiving module 102 configured to receive a second audio signal transmitted by a second microphone 300 at a moving position; a level detection module 103, the input terminal of which is connected to the output terminal of the first receiving module 101; and a control module 104, the first terminal of which is connected to the output terminal of the level detection module 103, and the second terminal of which is connected to the output terminal of the second receiving module 102; wherein the control module 104 is configured to switch the audio signal transmitted to the terminal system 400 between the first audio signal and the second audio signal based on the level detection result transmitted by the level detection module 103.

[0032] The beneficial effects of this solution are as follows: By setting up a first receiving module 101 and a second receiving module 102, the first audio signal transmitted by the first microphone 200 (such as a desktop microphone) and the second audio signal transmitted by the second microphone 300 (such as a lavalier microphone) can be received respectively; the level detection module 103 is connected to the first receiving module 101 and can detect the relationship between the level of the first audio signal and a preset threshold to obtain the level detection result. The level detection result can indirectly reflect the distance relationship between the user and the first microphone 200 (for example, when the level of the first audio signal is greater than or equal to the preset threshold, it is determined that the user is close to the first microphone 200; otherwise, it is determined that the user is far away from the first microphone 200); the control module 104 switches between the two audio signals based on the level detection result, that is, switches different audio signals and transmits them to the terminal system 400, thereby realizing the dynamic adjustment of the audio input path. The entire process requires no user intervention in hardware operations or software switching. It automatically selects the most suitable audio signal and outputs it to the terminal system 400. This effectively solves the technical problem of existing audio receivers relying on manual operation to switch audio signals, which leads to audio signal transmission interruptions and fails to meet the requirements of real-time and seamless use. It achieves a smooth transition without intervention, delay, or audio interruption, ensuring that users always get the best sound reception when moving in different locations. It also effectively avoids problems such as switching command failure or increased delay when the signal is unstable due to frequency band interference, realizing an intelligent experience of "sound follows the user, zero-operation continuous sound".

[0033] In one embodiment, please refer to Figure 3 The control module 104 includes a control logic unit 1041 and an audio switching unit 1042. The first terminal of the control logic unit 1041 is connected to the output terminal of the level detection module 103 and is configured to receive the level detection result of the first audio signal. The first terminal of the audio switching unit 1042 is connected to the output terminal of the level detection module 103 and is configured to receive the first audio signal. The second terminal of the control logic unit 1041 is connected to the second terminal of the audio switching unit 1042, and the third terminal of the audio switching unit 1042 is connected to the output terminal 102 of the second receiving module. The audio switching unit 1042 is configured to receive the second audio signal. The control logic unit 1041 is configured to control the audio switching unit 1042 to switch the audio signal transmitted to the terminal system 400 between the first and second audio signals based on the level detection result transmitted by the level detection module 103. In other words, the control logic unit 1041 is configured to control the working state of the audio switching unit 1042 based on the received level detection result, thereby achieving the switching of different audio signals on the output path.

[0034] Specifically, when the level detection result is the first level detection result, i.e., when the user is close to the first microphone 200, the control logic unit 1041 generates a first control command, instructing the audio switching unit 1042 to control the second receiving module 102 to stop receiving the second audio signal, and simultaneously transmit the first audio signal to the terminal system 400; when the level detection result is the second level detection result, i.e., when the user is away from the first microphone 200, the control logic unit 1041 generates a second control command, instructing the audio switching unit 1042 to stop receiving the first audio signal, and simultaneously transmit the second audio signal to the terminal system 400. Thus, through the coordinated work of the control logic unit 1041 and the audio switching unit 1042, stable, timely, and logically clear automatic switching between different audio signals can be achieved, ensuring that the user still has a high-quality, uninterrupted audio output experience while in motion, without relying on manual operation. It should be understood that the control logic unit 1041 here may include, but is not limited to, a processor (CPU), and the audio switching unit 1042 may include, but is not limited to, a switch matrix or a switching chip, neither of which is limited here.

[0035] In one embodiment, please refer to Figure 3 The control module 104 also includes a delay unit 1043. The second terminal of the control logic unit 1041 is connected to the first terminal of the delay unit 1043, the second terminal of the delay unit 1043 is connected to the second terminal of the audio switching unit 1042, and the third terminal of the delay unit 1043 is connected to the monitoring terminal of the level detection module 103. The delay unit 1043 is configured to transmit a control command to the audio switching unit 1042 when the level detection result continuously meets the switching conditions for a preset duration. That is, after receiving the control command transmitted by the control logic unit 1041, the delay unit 1043 is configured not to immediately transmit the control command to the audio switching unit 1042, but instead to initiate a continuous monitoring cycle, during which it continuously monitors the level detection result transmitted by the level detection module 103. Only when the level detection result continuously meets the set switching conditions and the duration reaches the preset duration (e.g., the first audio signal level continuously exceeds or equals a threshold for 500ms), will it output a switching command to the audio switching unit 1042, causing it to execute subsequent audio channel switching operations. In this way, transient signal fluctuations caused by a user's brief proximity to the desktop, sudden movement, or external interference (such as falling objects or sudden changes in background noise) can be effectively filtered out, thereby effectively avoiding erroneous switching. This solves the problem that traditional level threshold detection is susceptible to noise interference and cannot identify changes in the user's movement direction or distance, resulting in erroneous or missed switching. It also improves the anti-jitter capability and switching robustness of the audio receiver 100 in real dynamic environments. It should be understood that the delay unit 1043 may include, but is not limited to, a timer with monitoring functions; this is not a limitation here.

[0036] In one embodiment, the preset duration ranges from 400ms to 600ms. Preferably, the preset duration can be 450ms, 500ms, or 550ms, and is not limited here. In this embodiment, by setting the preset duration in the delay unit 1043 to between 400ms and 600ms, signal fluctuations caused by the user's brief approach to or departure from the desktop can be effectively filtered out, without causing the audio switching response to be too slow and affecting the user experience. This improves the anti-interference capability of the audio receiver 100 and also ensures the reliability of the audio receiver 100.

[0037] In one embodiment, please refer to Figure 3 The control module 104 also includes a mute control unit 1044. The fourth terminal of the audio switching unit 1042 is connected to the monitoring terminal of the mute control unit 1044. The mute control unit 1044 is configured to input a mute signal to the terminal system 400 when the audio switching unit 1042 performs a switching operation. Specifically, the mute control unit 1044 is configured to automatically output a mute signal to the terminal system 400 during the audio signal channel switching operation performed by the audio switching unit 1042. This shields against sudden noise or popping sounds that may occur during the switching process, effectively mitigating the auditory discomfort that may be caused by sudden changes in signal level during switching, and improving the user experience. It is particularly suitable for scenarios with high sound quality requirements, such as live streaming, recording, and conferencing environments. It should be understood that the mute control unit 1044 here can include, but is not limited to, mute circuits built using transistors or MOSFETs. For example, an NPN transistor can be used, and by controlling the base voltage to turn on the transistor, the audio signal can be short-circuited to ground to achieve mute.

[0038] In one embodiment, please refer to Figure 3 and Figure 4The audio receiver 100 also includes an audio output module 105. The fifth terminal of the audio switching unit 1042 is connected to the input terminal of the audio output module 105, and the output terminal of the mute control unit 1042 is connected to the input terminal of the audio output module 105. The output terminal of the audio output module 105 is configured to connect to the terminal system 400. Specifically, the audio output module 105 is configured to transmit audio signals to the terminal system 400. That is, the audio output module 105 is configured to receive the current audio signal output from the audio switching unit 1042 (i.e., the audio signal after real-time switching between the first microphone 200 and the second microphone 300) and transmit this audio signal to the terminal system 400, or, the mute signal output by the mute control unit 1042. The audio output module 105 may include, but is not limited to, a wired output module. For details, please refer to the aforementioned wired receiver module. The two are similar in transmission principle, only in opposite directions; to avoid repetition, they will not be described further here. Thus, the audio signal switched in real time by the audio switching unit 1042 can be stably transmitted to the terminal system 400 through the audio output module 105, such as the server of the computer device (i.e., the host of the computer device), which is not limited here.

[0039] Example B Secondly, please refer to Figure 5 A smart terminal 500 is provided, which includes a terminal system 400 and an audio receiver 100 as described in the first aspect.

[0040] It should be understood that the specific limitations of the smart terminal 500 can be found in the limitations of the audio receiver 100 mentioned above, and will not be repeated here to avoid repetition.

[0041] It should be noted that the smart terminal 500 mentioned here may include, but is not limited to, computer equipment, conference terminals or other terminal equipment, and is not limited here.

[0042] Example C Thirdly, please refer to Figures 1 to 5 An audio switching system includes a terminal system 400, a first microphone 200, a second microphone 300, and an audio receiver 100 as described in the first aspect; or, the audio switching system includes a first microphone 200, a second microphone 300, and a smart terminal 500 as described in the second aspect.

[0043] It should be understood that the specific limitations of the audio switching system can be found in the limitations of the audio receiver 100 mentioned above, and will not be repeated here to avoid repetition.

[0044] In one embodiment, please refer to Figure 6The first microphone 200 includes a first microphone core 201, a first signal processing module 202, and a first output module 203. The input of the first microphone core 201 is configured to acquire a first raw analog signal (i.e., user voice and / or ambient sound) generated when a user speaks at a fixed location (e.g., in front of a table). The output of the first microphone core 201 is connected to the input of the first signal processing module 202. The first signal processing module 202 is configured to perform signal conditioning and necessary format conversion on the first raw analog signal to obtain a first digital audio signal (i.e., the processed first raw analog signal) to improve signal quality and processing efficiency. The output of the first signal processing module 202 is connected to the input of the first output module 203 and is configured to transmit the first digital audio signal to the first output module 203. The output of the first output module 203 is connected to the input of the first receiving module 101 and is configured to output the first digital audio signal as a first audio signal to the first receiving module 101.

[0045] It should be understood that the first output module 203 here may include, but is not limited to, a wired output module or a wireless output module. For details, please refer to the aforementioned wired receiving module or wireless receiving module. To avoid repetition, it will not be described again here.

[0046] In one embodiment, please refer to Figure 7 The second microphone 300 includes a second microphone core 301, a second signal processing module 302, and a second output module 303. The second microphone core 301 is used to acquire a second raw analog signal (i.e., user voice and / or ambient sound) generated by the user during movement (e.g., a lapel clip microphone worn on the chest or collar). The output of the second microphone core 301 is connected to the input of the second signal processing module 302. The second signal processing module 302 is configured to perform signal conditioning and necessary format conversion on the raw analog signal to obtain a second digital audio signal (i.e., the processed second raw analog signal) to improve signal quality and processing efficiency. The output of the second signal processing module 302 is connected to the input of the second output module 303 and is configured to transmit the second digital audio signal to the second output module 303. The output of the second output module 303 is connected to the input of the second receiving module 102 and is configured to transmit the second digital audio signal as a second audio signal to the second receiving module 102.

[0047] It should be understood that the second output module 303 here includes, but is not limited to, the wireless output module. For details, please refer to the aforementioned wireless receiving module. To avoid repetition, it will not be described again here.

[0048] As can be seen, the above embodiments enable the first microphone 200 and the second microphone 300 to each have independent and complete signal links, thereby realizing a flexible and stable dual-input structure design in the entire audio receiver 100 system.

[0049] In one embodiment, please refer to Figure 8 The first signal processing module 202 includes a first conditioning circuit 2021 and a first analog-to-digital converter (ADC) unit 2022. The output terminal of the first microphone 201 is connected to the input terminal of the first conditioning circuit 2021. The first conditioning circuit 2021 is configured to perform signal conditioning processing on the first raw analog signal output by the first microphone 201, such as filtering, gain adjustment, and DC offset removal. The output terminal of the first conditioning circuit 2021 is connected to the input terminal of the first ADC unit 2022, and the output terminal of the first ADC unit 2022 is connected to the input terminal of the first output module 203. The first ADC unit 2022 is configured to convert the conditioned first raw analog signal into a first digital audio signal and transmit it to the first output module 203.

[0050] In one embodiment, please refer to Figure 9 The second signal processing module 302 includes a second conditioning circuit 3021 and a second analog-to-digital converter (ADC) unit 3022. The output terminal of the second microphone 301 is connected to the input terminal of the second conditioning circuit 3021. The second conditioning circuit 3021 is configured to perform signal conditioning processing on the second original analog signal output by the second microphone 301, such as filtering, gain adjustment, and DC offset removal. The output terminal of the second conditioning circuit 3021 is connected to the input terminal of the second ADC unit 3022, and the output terminal of the second ADC unit 3022 is connected to the input terminal of the second output module 303. The second ADC unit 3022 is configured to convert the conditioned second original analog signal into a second digital audio signal and transmit it to the second output module 303.

[0051] As can be seen, the above embodiments, by setting independent signal conditioning and analog-to-digital conversion paths for the first microphone 200 and the second microphone 300 respectively, achieve separate optimization and independent processing of audio signals at fixed and moving positions, effectively improving the conversion accuracy of audio signals and the overall transmission stability.

[0052] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. An audio receiver, characterized by, The audio receiver includes: The first receiving module is configured to receive a first audio signal transmitted by a first microphone at a fixed position; The second receiving module is configured to receive a second audio signal transmitted by a second microphone at a moving location; A level detection module, wherein the input terminal of the level detection module is connected to the output terminal of the first receiving module; The control module has a first terminal connected to the output terminal of the level detection module and a second terminal connected to the output terminal of the second receiving module. The control module is configured to switch the audio signal transmitted to the terminal system between the first audio signal and the second audio signal based on the level detection result transmitted by the level detection module.

2. The audio receiver of claim 1, wherein, The control module includes a control logic unit and an audio switching unit; The first terminal of the control logic unit is connected to the output terminal of the level detection module, and the first terminal of the audio switching unit is connected to the output terminal of the level detection module; The second end of the control logic unit is connected to the second end of the audio switching unit, and the third end of the audio switching unit is connected to the output end of the second receiving module. The control logic unit is configured to control the audio switching unit to switch the audio signal transmitted to the terminal system between the first audio signal and the second audio signal based on the level detection result transmitted by the level detection module.

3. The audio receiver of claim 2, wherein, The control module also includes a delay unit; The second terminal of the control logic unit is connected to the first terminal of the delay unit, the second terminal of the delay unit is connected to the second terminal of the audio switching unit, and the third terminal of the delay unit is connected to the monitoring terminal of the level detection module. The delay unit is configured to transmit a control command to the audio switching unit when the level detection result continuously meets the switching condition for a preset duration.

4. The audio receiver of claim 3, wherein, The preset duration ranges from 400ms to 600ms.

5. The audio receiver of claim 2, wherein, The control module also includes a silent control unit; The fourth terminal of the audio switching unit is connected to the monitoring terminal of the mute control unit; The mute control unit is configured to input a mute signal to the terminal system when the audio switching unit performs a switching operation.

6. The audio receiver of claim 5, wherein, The audio receiver also includes an audio output module; The fifth terminal of the audio switching unit is connected to the input terminal of the audio output module, the output terminal of the mute control unit is connected to the input terminal of the audio output module, and the output terminal of the audio output module is configured to connect to the terminal system. The audio output module is configured to transmit audio signals to the terminal system.

7. The audio receiver of claim 1, wherein, The first receiving module includes a wired receiving module or a wireless receiving module.

8. The audio receiver of claim 1, wherein, The second receiving module includes a wireless receiving module.

9. A smart terminal, characterized by The smart terminal includes a terminal system and an audio receiver as described in any one of claims 1-8.

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