A microphone system and microphone device

Abstract

This invention discloses a microphone system and microphone device. The system includes a microphone transmitter and a microphone receiver. The microphone transmitter is used to pick up a first sound source, process the first sound source to generate a first audio signal, and transmit it to the microphone receiver. The microphone receiver is used to pick up a second sound source, process the second sound source to generate a second audio signal, and then mix the first audio signal and the second audio signal before outputting it to an external device. The technical solution provided by this invention solves the problem of the limited sound pickup range of current microphones by using a microphone transmitter to pick up distant sound and transmit it to a microphone receiver, and then using a microphone receiver to pick up near sound and mix the distant and near sound before outputting it. This allows for quick adaptation to the interview mode when the interviewee's location changes, offering high flexibility.

Description

Technical Field

[0001] This invention relates to the field of microphone technology, and more particularly to a microphone system and microphone device. Background Technology

[0002] Traditional on-camera microphones connect to the camera via wires and transmit the captured audio to the camera for storage. These microphones have a relatively unidirectional orientation. To address this issue, improved solutions simply add a microphone in another direction, but this method still has a significantly limited pickup range. Summary of the Invention

[0003] This invention provides a microphone system and microphone device to solve the problem of the limited sound pickup range of current microphones.

[0004] In a first aspect, embodiments of the present invention provide a microphone system, the microphone system comprising: a microphone transmitter and a microphone receiver; wherein...

[0005] The microphone transmitter is used to pick up the first sound source, process the first sound source to generate a first audio signal, and transmit it to the microphone receiver.

[0006] The microphone receiver is used to pick up the second sound source, process the second sound source to generate a second audio signal, and then mix the first audio signal and the second audio signal before outputting them to an external device.

[0007] Optionally, the microphone transmitter includes a first pickup module, which includes a single pickup microphone (MIC); the microphone receiver includes a second pickup module, which includes a microphone array composed of multiple pickup microphones.

[0008] Optionally, the microphone transmitter further includes a first AGC module, used to process the first sound source using an AGC automatic gain algorithm to obtain the first audio signal; the microphone receiver further includes a second AGC module, an array algorithm module, and an EQ equalizer processing module, used to sequentially process the second sound source using the AGC automatic gain algorithm, the first array algorithm, and the EQ equalizer, respectively, to obtain the second audio signal.

[0009] Optionally, the microphone transmitter includes a first wireless connection module, and the microphone receiver includes a second wireless connection module; the microphone transmitter and the microphone receiver are wirelessly connected through the first wireless connection module and the second wireless connection module, and the wireless connection method includes at least one of 2.4G, 5.8G, UHF band, VHF band and Bluetooth.

[0010] Optionally, if the microphone transmitter and the microphone receiver are connected, the microphone transmitter and the microphone receiver are also used to simultaneously pick up a third sound source; the microphone receiver is also used to sequentially process the third sound source using a low-cut algorithm, a second array algorithm, and an EQ equalizer to obtain a third audio signal, and then output the third audio signal to the external device.

[0011] Optionally, the microphone transmitter includes a first storage module for storing a first preset number of first audio signals; the microphone receiver includes a second storage module for storing a second preset number of second audio signals.

[0012] Optionally, the microphone receiver includes a mode switching module for switching between a mixing mode, a transmitter-only audio reception mode, and a receiver-only audio reception mode.

[0013] Optionally, the microphone receiver is also configured to output the received first audio signal to the external device in transmitter-only audio mode.

[0014] Optionally, the microphone receiver is further configured to disconnect the signal connection with the microphone transmitter in receiver-only audio mode and output the second audio signal to the external device.

[0015] Secondly, embodiments of the present invention also provide a microphone device, which is applied to the microphone system provided in any embodiment of the present invention. The microphone device includes a microphone transmitter and a microphone receiver, wherein the microphone transmitter and the microphone receiver can be connected by magnetic attraction and / or snap-fit.

[0016] This invention provides a microphone system including a microphone transmitter and a microphone receiver. The microphone transmitter picks up distant sound and transmits it to the microphone receiver, which then picks up near sound. The system mixes the distant and near sound before outputting the result. This solves the problem of limited microphone pickup range and allows for quick adaptation to different interview modes when the interviewee's location changes, offering high flexibility. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the microphone system provided in Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the microphone transmitter provided in Embodiment 1 of the present invention;

[0019] Figure 3This is a schematic diagram of the microphone receiver provided in Embodiment 1 of the present invention. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0021] Furthermore, the terms "first," "second," etc., may be used herein to describe various directions, actions, steps, or elements, but these directions, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish a first direction, action, step, or element from another direction, action, step, or element. For example, without departing from the scope of the embodiments of the present invention, a first audio signal may be referred to as a second audio signal, and similarly, a second audio signal may be referred to as a first audio signal. Both the first audio signal and the second audio signal are audio signals, but they are not the same audio signal. The terms "first," "second," etc., should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] Example 1

[0023] Figure 1 This is a schematic diagram of the microphone system provided in Embodiment 1 of the present invention. This embodiment is applicable to situations requiring multi-directional sound pickup. Figure 1 As shown, the microphone system includes a microphone transmitter 100 and a microphone receiver 200; wherein, the microphone transmitter 100 is used to pick up a first sound source, process the first sound source to generate a first audio signal and transmit it to the microphone receiver 200; the microphone receiver 200 is used to pick up a second sound source, process the second sound source to generate a second audio signal, and then mix the first audio signal and the second audio signal before outputting it to an external device.

[0024] Specifically, the microphone transmitter 100 and microphone receiver 200 can be wirelessly connected, while the microphone receiver 200 can be wired to external devices such as cameras and mobile phones. This allows the microphone transmitter 100 to be easily moved to various designated locations to pick up sound as needed. The microphone system can operate in mixing mode. Relative to external devices, the microphone transmitter 100 can pick up a first sound source at a distant location, process it to obtain a first audio signal, and then transmit it to the microphone receiver 200. The microphone receiver 200 itself can also pick up a second sound source nearby and process it to obtain a second audio signal. Subsequently, the microphone receiver 200 can mix the received first audio signal and the generated second audio signal before outputting it to the external device.

[0025] Among them, optional, such as Figure 2 and Figure 3 As shown, the microphone transmitter 100 includes a first pickup module 110, which includes a single pickup microphone (MIC); the microphone receiver 200 includes a second pickup module 210, which includes a microphone array composed of multiple pickup microphones. Specifically, for ease of use, the microphone transmitter 100 can be designed to be relatively small, therefore a single pickup microphone can be preferentially used as the first pickup module 110. The microphone receiver 200, on the other hand, has a relatively fixed position and can be designed to be larger. Therefore, a microphone array composed of multiple pickup microphones can be used as the second pickup module 210, allowing for switching between more microphone pickup modes to adapt to more application scenarios and obtain the desired ideal sound effect.

[0026] Optional, such as Figure 2 and Figure 3 As shown, the microphone transmitter 100 further includes a first AGC module 120, which is used to process the first sound source using the AGC automatic gain algorithm to obtain the first audio signal; the microphone receiver 200 further includes a second AGC module 220, an array algorithm module 231, and an EQ equalizer processing module 232, which are respectively used to process the second sound source using the AGC automatic gain algorithm, the first array algorithm, and the EQ equalizer, respectively, to obtain the second audio signal.

[0027] Specifically, the microphone transmitter 100 can pick up the first sound source through the first pickup module 110. After acquiring the first sound source, the first AGC module 120 can perform AGC automatic gain control on the first sound source to amplify and filter the sound source, thereby obtaining the desired first audio signal. After obtaining the first audio signal, the first CODEC module 130 can also encode and decode the first audio signal, and the first MCU 140 can control the operation of the first CODEC module 130 to transmit the first audio signal to the microphone receiver 200.

[0028] The microphone receiver 200 can pick up the second sound source through the second pickup module 210. After acquiring the second sound source, it can perform AGC automatic gain control algorithm processing on the second sound source through the second AGC module 220, then perform first array algorithm processing on the processed second sound source through the array algorithm module 231, and finally perform EQ equalizer processing on the processed second sound source through the EQ equalizer processing module 232 to obtain the desired second audio signal. The second sound source processed by the second AGC module 220 can first undergo encoding and decoding processing through the second CODEC module 240, and the operation of the second CODEC module 240 can be controlled by the second MCU 230, thus facilitating processing by the array algorithm module 231 and the EQ equalizer processing module 232. Figure 3 As shown, the array algorithm module 231 and the EQ equalizer processing module 232 can be included in the second MCU 230. On the other hand, the microphone receiver 200 can mix the first audio signal acquired from the microphone transmitter 100 with its own processed second audio signal via the second MCU 230. After mixing, the mixing result can be encoded and decoded via the second CODEC module 240, and then output to an external device via the monitoring output module 250. Specifically, for the first array algorithm processing, the microphone pickup mode can be switched to cardioid, supercardioid, omnidirectional, or bidirectional depending on the different combinations of the microphone array in the second pickup module 210. Then, based on preset MIC parameters, the weighted sum of the signals collected by each pickup MIC in the second pickup module 210 is calculated as the result of the algorithm processing. This result, after EQ equalizer processing, can also be used to set the left and right channels for output. By adjusting the parameters of each MIC, the output weighted sum can be changed accordingly, thereby realizing a multidirectional microphone array pickup mode. Existing microphones typically capture sound across various frequency bands, including noise, requiring extensive post-processing. However, the microphone system provided in this embodiment, through the aforementioned processing, can obtain clear human voices and / or ambient sounds, making it easier for users to adjust the sound later.

[0029] Optional, such as Figure 2 and Figure 3 As shown, the microphone transmitter 100 includes a first wireless connection module 150, and the microphone receiver 200 includes a second wireless connection module 260. The microphone transmitter 100 and the microphone receiver 200 are wirelessly connected via the first wireless connection module 150 and the second wireless connection module 260. The wireless connection method includes at least one of 2.4G, 5.8G, UHF band, VHF band, and Bluetooth. Specifically, the microphone transmitter 100 can transmit a first audio signal to the microphone receiver 200 through the first wireless connection module 150, and the microphone receiver 200 can then receive it through the second wireless connection module 260. Simultaneously, the microphone transmitter 100 can control the first wireless connection module 150 through a first MCU 140, and the microphone receiver 200 can control the second wireless connection module 260 through a second MCU 230, thereby controlling whether or not there is a connection between the microphone transmitter 100 and the microphone receiver 200.

[0030] For example, the wireless connection method uses the 2.4G frequency band. The microphone transmitter 100 and the microphone receiver 200 are frequency-paired and interconnected. For other transmitters and receivers in the same frequency band, automatic frequency adjustment can be achieved to avoid connecting multiple devices. This allows multiple sets of devices to be used in the same environment, avoiding frequency crosstalk. Furthermore, the microphone transmitter 100 and the microphone receiver 200 can automatically reconnect after disconnection or restart.

[0031] Based on the above technical solution, optionally, if the microphone transmitter 100 and the microphone receiver 200 are connected, the microphone transmitter 100 and the microphone receiver 200 are also used to simultaneously pick up a third sound source; the microphone receiver 200 is also used to sequentially perform low-cut algorithm processing, second array algorithm processing and EQ equalizer processing on the third sound source to obtain a third audio signal, and then output the third audio signal to the external device.

[0032] Specifically, in mixing mode, the microphone receiver 200 can determine whether the microphone transmitter 100 and the microphone receiver 200 are connected via the second MCU 230. If not, the first audio signal and the second audio signal can be mixed as described above. If the microphone transmitter 100 and the microphone receiver 200 are determined to be connected, the microphone transmitter 100 and the microphone receiver 200 can be used as a whole microphone for sound pickup. Specifically, the first pickup module 110 in the microphone transmitter 100 can be used as part of the overall microphone pickup array, and combined with the second pickup module 210 in the microphone receiver 200, thereby allowing the microphone transmitter 100 and the microphone receiver 200 to simultaneously pick up the third sound source. After acquiring the third audio source, the low-cut unit in the second MCU230 or the second CODEC module 240 can perform low-cut algorithm processing on the third audio source. Then, the array algorithm module 231 can perform second array algorithm processing on the processed third audio source, and the EQ equalizer processing module 232 can perform EQ equalizer processing on the processed third audio source to obtain the desired third audio signal. For the second array algorithm processing, the microphone pickup mode can be switched to cardioid, supercardioid, or omnidirectional according to different combinations of the microphone arrays of the first pickup module 110 and the second pickup module 210. Then, according to the preset MIC parameters, specifically including the first MIC parameters corresponding to the first pickup module 110 and the second MIC parameters corresponding to the second pickup module 210 (corresponding one-to-one with the MIC signals collected by each pickup MIC), the weighted sum of the signals collected by each pickup MIC in the first pickup module 110 and the second pickup module 210 can be calculated as the result of the algorithm processing. After the result is processed by the EQ equalizer, the left and right channels can be set for output. By adjusting the parameters of each microphone, the output weighted sum can be changed accordingly, thereby realizing the multi-directional sound pickup mode of the microphone array.

[0033] Based on the above technical solution, optionally, the microphone transmitter 100 includes a first storage module for storing a first preset number of first audio signals; the microphone receiver 200 includes a second storage module for storing a second preset number of second audio signals. Specifically, the microphone transmitter 100 can store the generated first audio signals as audio files in the first storage module, and the microphone receiver 200 can store the generated second audio signals as audio files in the second storage module. Furthermore, a certain number can be preset for each (i.e., the aforementioned first preset number and second preset number). When the number of audio files stored by each exceeds this number, each can replace the old audio files with new audio files for storage, thereby saving audio for later use without excessively consuming resources.

[0034] Based on the above technical solutions, alternatives include, for example... Figure 3 As shown, the microphone receiver 200 includes a mode switching module 270, used to switch between a mixing mode, a transmitter-only reception mode, and a receiver-only reception mode. Specifically, the microphone system can operate in different system reception modes such as a mixing mode, a transmitter-only reception mode, and a receiver-only reception mode. The mode switching module 270 can switch the current system reception mode according to the user's selection. Then, the second MCU 230 can determine the current system reception mode and execute the working process in different modes. The working process of the mixing mode can be referred to the above description.

[0035] Optionally, the microphone receiver 200 is also used to output the received first audio signal to the external device in transmitter-only reception mode. Specifically, when operating in transmitter-only reception mode, the microphone transmitter 100 and the microphone receiver 200 can be separated, or connected magnetically or by snap-fit. After receiving the first audio signal processed as described above, the microphone receiver 200 can directly output the first audio signal to the external device through the monitoring output module 250, thereby achieving independent acquisition of remote sound.

[0036] Optionally, the microphone receiver 200 is further configured to disconnect the signal connection with the microphone transmitter 100 in receiver-only audio mode and output the second audio signal to the external device. Specifically, when operating in receiver-only audio mode, the microphone transmitter 100 and the microphone receiver 200 can be separated, or magnetically or snap-fit ​​connected, but their wireless connection can be disconnected. That is, the microphone receiver 200 can no longer receive the first audio signal transmitted by the microphone transmitter 100, but directly output the processed second audio signal to the external device through the monitoring output module 250, thereby achieving independent acquisition of near-end sound.

[0037] The microphone system provided in this invention includes a microphone transmitter and a microphone receiver. The microphone transmitter picks up distant sound and transmits it to the microphone receiver, which then picks up near sound. The distant and near sound are mixed and output, which solves the problem of the limited sound pickup range of current microphones. It is convenient to quickly adapt to the interview mode when the interviewee's position changes, and has a high degree of flexibility.

[0038] Example 2

[0039] Embodiment 2 of the present invention also provides a microphone device applied to the microphone system provided in any of the above embodiments. The microphone device includes a microphone transmitter and a microphone receiver, wherein the microphone transmitter and the microphone receiver can be connected via magnetic attraction and / or snap-fit. Specifically, referring to the descriptions in the above embodiments, the microphone transmitter and microphone receiver can be used separately or connected via magnetic attraction or snap-fit. Different connection states allow the microphone system to operate in different modes, thus making it more convenient for users to use in different situations.

[0040] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A microphone system, characterized in that, include: Microphone transmitter and microphone receiver; among which, The microphone transmitter is used to pick up the first sound source, process the first sound source to generate a first audio signal, and transmit it to the microphone receiver. The microphone receiver is used to pick up the second sound source, process the second sound source to generate a second audio signal, and then mix the first audio signal and the second audio signal before outputting them to an external device. The microphone transmitter includes a first pickup module, which includes a single pickup microphone (MIC); the microphone receiver includes a second pickup module, which includes a microphone array composed of multiple pickup microphones. If the microphone transmitter and the microphone receiver are connected, the microphone transmitter and the microphone receiver are also used to simultaneously pick up a third sound source; the microphone receiver is also used to sequentially process the third sound source with a low-cut algorithm, a second array algorithm, and an EQ equalizer to obtain a third audio signal, and then output the third audio signal to the external device; The second array algorithm processing includes switching the microphone pickup mode to cardioid, supercardioid, or omnidirectional according to different combinations of the microphone arrays of the first pickup module and the second pickup module, and then calculating the weighted sum of the signals collected by each pickup MIC in the first pickup module and the second pickup module as the result of the algorithm processing according to the preset MIC parameters. The microphone receiver includes a mode switching module for switching between a mixing mode, a transmitter-only audio reception mode, and a receiver-only audio reception mode. The microphone receiver is also used to disconnect the signal connection with the microphone transmitter in receiver stand-alone audio mode and output the second audio signal to the external device.

2. The microphone system according to claim 1, characterized in that, The microphone transmitter further includes a first AGC module, used to process the first sound source using the AGC automatic gain algorithm to obtain the first audio signal; the microphone receiver further includes a second AGC module, an array algorithm module, and an EQ equalizer processing module, used to sequentially process the second sound source using the AGC automatic gain algorithm, the first array algorithm, and the EQ equalizer, respectively, to obtain the second audio signal.

3. The microphone system according to claim 1, characterized in that, The microphone transmitter includes a first wireless connection module, and the microphone receiver includes a second wireless connection module; the microphone transmitter and the microphone receiver are wirelessly connected through the first wireless connection module and the second wireless connection module, and the wireless connection method includes at least one of 2.4G, 5.8G, UHF band, VHF band and Bluetooth.

4. The microphone system according to claim 1, characterized in that, The microphone transmitter includes a first storage module for storing a first preset number of first audio signals; the microphone receiver includes a second storage module for storing a second preset number of second audio signals.

5. The microphone system according to claim 1, characterized in that, The microphone receiver is also used to output the received first audio signal to the external device in transmitter-only audio mode.

6. A microphone device, used in the microphone system as described in any one of claims 1-5, characterized in that, It includes a microphone transmitter and a microphone receiver, wherein the microphone transmitter and the microphone receiver can be connected by magnetic attraction and / or snap-fit.

Images