Wireless earphone system, wireless recording and monitoring system and wireless recording system

Abstract

The utility model relates to a wireless earphone system, a wireless recording and monitoring system and a wireless recording system, which comprise an earphone box and a pair of wireless earphones, loudspeakers are arranged in the wireless earphones, the wireless earphone system is characterized in that a USB dongle is embedded in the earphone box, and RF modules and audio processing modules are arranged in the USB dongle and the wireless earphones; the USB dongle and the wireless earphone carry out a low-latency private protocol through the RF module; the wireless earphone is used for carrying out standard Bluetooth protocol connection with the intelligent device through the RF module. The utility model designs a multifunctional earphone system, which comprises a wireless earphone and a matched earphone box, a high-performance processing module (audio processing module) and an RF (Radio Frequency) module are arranged in the earphone, and the RF module has a standard Bluetooth protocol and a low-delay private protocol, simultaneously works on line and can process data. According to a usage scene, the system works in a standard Bluetooth mode or a low-delay mode, and integrates song listening, wireless monitoring and a wireless recorder.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless bluetooth earphones, in particular to a wireless earphone system, a wireless recording and monitoring system and a wireless recording system. Background Art

[0002] The existing technology provides ordinary single-hang and double-hang Bluetooth headsets, which solve the distance constraints of traditional wired connections to smart devices. In recent years, TWS and OWS Bluetooth headsets have been developed, which eliminate the connection between double-hang headsets and use charging boxes for storage and charging. The technological innovation has won the favor of consumers, but their basic functions are listening to music and making calls through Bluetooth.

[0003] There are more and more anchors on live broadcast platforms who are engaged in hosting, commentary, performing arts, social interaction, etc. They need monitoring headphones that can hear their own voices (commonly known as in-ear monitoring) and distant voices. Since in-ear monitoring has requirements for delay, the delay cannot exceed 30ms without affecting the effect. Therefore, wired monitoring headphones were used in the early days, but the constraints of the wires restricted the anchors' talents (such as singing and dancing, etc., which were inconvenient) and their personal image. Therefore, the industry launched wireless monitoring headphones (also known as PM headphones) customized for anchors. PM headphones need to be equipped with a transmitter as standard. The low-latency wireless private protocol solves the constraints of wired monitoring headphones, but the basic function is only a single headset that satisfies users' wireless monitoring. This wireless protocol cannot use standard Bluetooth. The standard Bluetooth protocol has a large delay (70-300ms). If the delay is large, the user's in-ear monitoring will obviously hear two sounds, one in front and one behind.

[0004] The rise of short videos has triggered the explosion of the Vlog-related tool market, among which wireless audio equipment for shooting is also indispensable. Many brands have launched wireless recorders, whose sound pickup (microphone TX) and recording (receiver RX) are distributed in two devices connected wirelessly, which improves the distance of photography and recording sound collection, and adopts a wireless low-latency private protocol to solve the problem of video quality of audio and video synchronization. However, the basic function is a transceiver for wireless recording. This wireless protocol cannot use standard Bluetooth, which has a large delay (70-300ms). The audio and video of the recorded video cannot be synchronized, and post-processing is required, which is not suitable for ordinary enthusiasts.

[0005] If the above three types of audio products are only used for audio scenarios, they have single functional attributes and are used in specific scenarios. Utility Model Content

[0006] The utility model provides a wireless headset system, a wireless recording and monitoring system and a wireless recording system, which solve the problem that the product forms of Bluetooth headsets, wireless monitoring headsets and wireless recording microphones have specific usage scenarios and single functions.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A wireless headset system comprises: an earphone box and a pair of wireless earphones, wherein the wireless earphones are provided with a speaker, a USB dongle is provided on / embedded in the earphone box, and both the USB dongle and the wireless earphones are provided with an RF module and an audio processing module;

[0009] The USB dongle and the wireless headset are connected via a low-latency private protocol via an RF module;

[0010] The wireless headset is used to connect to the smart device through the RF module using the standard Bluetooth protocol;

[0011] The wireless headset and the USB dongle are both provided with a management module, and the RF module and the management module are both connected to the audio processing module;

[0012] The USB dongle is used to receive a first audio signal from the smart device and transmit it to the speaker of the wireless headset through a low-latency private protocol of the RF module for playback;

[0013] The wireless headset receives the second audio signal from the smart device through the standard Bluetooth protocol of the RF module and transmits it to the speaker of the wireless headset for playback.

[0014] Preferably, the USB dongle is connected to the smart device via a USB interface.

[0015] Preferably, the USB dongle is built into an earphone box, and a management module and a control module are provided in the earphone box, and the management module of the earphone box is connected to the management module of the USB dongle.

[0016] Preferably, the earphone box is further provided with an input / output module, which is a USB digital or 3.5 earphone analog audio interface, and the input / output module is connected to the audio processing module of the USB dongle;

[0017] The input / output module is used to receive a first audio signal from the smart device and transmit it to the audio processing module of the USB dongle, and transmit it to the speaker of the wireless headset for playback through the low-latency private protocol of the RF module of the USB dongle.

[0018] A wireless recording and monitoring system, using any of the wireless headset systems described above, wherein the wireless headset and the USB dongle are each provided with at least one microphone, and the microphone is connected to an audio processing module;

[0019] The microphone of one of the wireless earphones is used to collect human voice signals and transmit them to the audio processing module of the wireless earphone;

[0020] The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module;

[0021] The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module;

[0022] The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone.

[0023] And perform noise reduction processing to generate a third audio signal and transmit it to the smart device for recording.

[0024] Preferably, the third audio signal is transmitted to the smart device through the output module for recording.

[0025] A wireless recording system, using any of the wireless headset systems described above, wherein the microphones of the two wireless headsets collect human voice signals and transmit them to the audio processing modules of the respective wireless headsets;

[0026] The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module;

[0027] The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module;

[0028] The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone.

[0029] And perform noise reduction processing to generate a fourth audio signal and transmit it to the smart device for recording.

[0030] Preferably, the fourth audio signal is transmitted to the smart device through the output module for recording.

[0031] By implementing the above technical scheme, the following technical effects are achieved: the utility model provides a wireless headset system, a wireless recording and monitoring system, and a wireless recording system, and designs a multifunctional headset system, including wireless headsets and a matching headset box, with built-in headset-related high-performance processing modules and RF modules, which have standard Bluetooth protocols and low-latency private protocols, work online at the same time and can process data, and work in standard Bluetooth mode or low-latency mode according to the usage scenario, while satisfying the needs of listening to songs, wireless monitoring, and wireless recorders in one; simple operation, compact size, and convenient to carry with you, the three scenes of listening to songs, live broadcasts, and VLOG can be turned on at any time, and the headset can be worn for listening to songs and monitoring. When the headset is used as a microphone, the user can take off the headset and put it in a place suitable for the user to collect sound, which is more conducive to the free creation of makers, and the social interaction of anchors is more flexible and convenient, which lowers the threshold for new makers and is in line with the theme of everyone's creation. A new generation of tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a wireless headset system (USB dongle external use) provided by the utility model (embodiment 1);

[0033] Figure 2 A schematic diagram of the structure of a wireless headset system (USB dongle built-in) provided by the utility model (Example 2);

[0034] Figure 3 A schematic diagram of the structure of a wireless recording and monitoring system provided by the utility model (Example 3);

[0035] Figure 4 This is a structural schematic diagram of a wireless recording system provided by the utility model (Example 4). DETAILED DESCRIPTION

[0036] In order to better understand the technical solution of the present utility model, the embodiments provided by the present utility model are described in detail below with reference to the accompanying drawings.

[0037] Embodiment 1

[0038] like Figure 1 As shown, it can be understood that the wireless headset system provided in this embodiment includes: an earphone box and a pair of wireless earphones, the wireless earphones are provided with a speaker, a USB dongle is provided on / embedded in the earphone box, and both the USB dongle and the wireless earphones are provided with an RF module and an audio processing module;

[0039] The USB dongle and the wireless headset are connected via a low-latency private protocol via an RF module;

[0040] The wireless headset is used to connect to the smart device through the RF module using the standard Bluetooth protocol;

[0041] The wireless headset and the USB dongle are both provided with a management module, and the RF module and the management module are both connected to the audio processing module;

[0042] The USB dongle is used to receive a first audio signal from the smart device and transmit it to the speaker of the wireless headset through a low-latency private protocol of the RF module for playback;

[0043] The wireless headset receives the second audio signal from the smart device through the standard Bluetooth protocol of the RF module and transmits it to the speaker of the wireless headset for playback.

[0044] In this embodiment, the wireless headset has built-in audio processing module and RF module. The RF module has standard Bluetooth protocol and low-latency private protocol, and works online and can process data at the same time. It works in standard Bluetooth mode or low-latency mode according to the usage scenario, and also meets two core data: one is low power consumption. The working current of the whole machine should be as low as possible. The limited space of the headset is reserved for the limited size and small capacity of the battery. Low power consumption can meet the user's battery life. The second is low latency. The shorter the wireless audio transmission time of the headset and USB dongle, the better. The critical time for human ears to recognize two echoes is 40ms. After exceeding 40ms, the recognition of two sounds becomes more and more obvious, affecting the effect of ear return.

[0045] This embodiment adopts the method of embedding a USB dongle in the earphone box, that is, the USB dongle and the earphone box are designed as an integrated whole. The USB dongle can be taken out and used with wireless earphones, and connected to the USB digital interface of a smart device (such as a PC / mobile phone, etc.). The smart device and the USB dongle realize wireless recording and in-ear monitoring of the earphones through the USB interface.

[0046] In this embodiment, the earphones are in the off state when the cover is closed in the earphone box. When the cover is opened, the earphones are turned on in the default Bluetooth mode. The smart device searches for the earphones Bluetooth connection, and the functions of listening to music or making calls are the same as those of standard Bluetooth earphones. The wireless earphones receive the second audio signal from the smart device through the Bluetooth protocol of the RF module and transmit it to the speaker of the wireless earphones for playback.

[0047] The special thing is that after the USB dongle is taken out and connected to the smart device to power on, the management module of the USB dongle is initialized, and then the RF module of the USB dongle is notified to start working through the audio processing module. The RF module of the wireless headset detects the RF module information of the USB dongle, and through the headset audio processing module, it notifies the wireless headset management module to switch the headset to low-latency mode. The RF module of the headset switches from the standard Bluetooth protocol to the low-latency private protocol and establishes a connection with the low-latency protocol of the RF module of the USB dongle. After the handshake is successful, the headset switches from the Bluetooth mode to the low-latency mode. The user operates the wireless headset UI (such as double-clicking), and the wireless headset switches from the monitoring function to the wireless microphone function through the headset control unit module to the headset management module. Double-clicking again can switch from the wireless microphone function back to the monitoring function.

[0048] At this time, the first audio signal of the smart device goes down through the USB dongle to the digital input / output module, passes through the audio processing module of the USB dongle to the RF module, and then is wirelessly transmitted to the low-latency RF of the RF module of the wireless headset through a low-latency private protocol, and is output to the speaker of the wireless headset through the audio processing module for playback, completing the monitoring function on the smart device side.

[0049] The USB dongle in this embodiment is connected to the smart device via a USB interface. The monitoring and microphone functions can be controlled by operating the UI of the wireless headset, such as double-clicking. The management modules are all controlled by an MCU. In other embodiments, other control chips such as a DSP can also be used.

[0050] When switching Bluetooth mode, the USB dongle is unplugged from the smart device and powered off. The headset does not detect the RF module information of the USB dongle and exits the low-latency mode and returns to the standard Bluetooth mode. Or the USB dongle is connected to the smart device and is in working state. The USB dongle button UI is operated (such as double-clicking). The MCU management module of the USB dongle sends a corresponding instruction, which is given to the headset through the RF module of the USB dongle, and the headset switches to the standard Bluetooth mode.

[0051] Embodiment 2

[0052] like Figure 2 As shown, the USB dongle is built into an earphone box, and a management module and a control module are arranged in the earphone box. The management module of the earphone box is connected to the management module of the USB dongle.

[0053] In this embodiment, the earphone box is further provided with an input / output module, which is a USB digital and 3.5 earphone analog audio interface, and the input / output module is connected to the audio processing module of the USB dongle;

[0054] The input / output module is used to receive a first audio signal from the smart device and transmit it to the audio processing module of the USB dongle, and transmit it to the speaker of the wireless headset for playback through the low-latency private protocol of the RF module of the USB dongle.

[0055] Specifically, when the USB dongle is built into the headphone box, long press the headphone box button (UI operation), the control unit module of the headphone box sends a power-on command to the management module of the headphone box, and the headphone box works to power the USB dongle. After the MCU management module of the USB dongle is initialized, it notifies the RF module of the USB dongle to start working through the audio processing module. The RF module of the wireless headset detects the RF module information of the USB dongle, and through the headset audio processing module, it notifies the wireless headset MCU management module to switch the headset to low-latency mode. The headset RF module switches from the Bluetooth protocol to the low-latency protocol and establishes a connection with the USBdongle's RF module low-latency protocol. After the handshake is successful, the headset switches from Bluetooth mode to low-latency mode.

[0056] At this time, the first audio signal of the smart device is transmitted through the USB line downlink charging box USB to the digital input / output module or through the headphone cable of the 3.5 interface through the headphone socket to the analog input / output module, through the audio processing module of the USB dongle to the RF module, and then wirelessly transmitted to the RF module of the wireless headset through a low-latency private protocol, and output to the wireless headset speaker for playback through the audio processing module of the wireless headset, thereby completing the monitoring function on the smart device side.

[0057] When switching Bluetooth mode, long press the headphone box button (UI operation), the headphone box control unit module sends a shutdown command to the headphone box MCU management module, the headphone box stops supplying power to the USB dongle and enters sleep mode, and the headset does not detect the USB dongle and exits the low-latency mode and returns to the standard Bluetooth mode.

[0058] Or operate the earphone box UI, such as controlling the touch screen interface UI, the earphone box LCD touch screen control unit module sends a corresponding switching instruction to the earphone box MCU management module, and then the MCU management module of the USB dongle gives it to the earphone through the RF module, switching the earphone into standard Bluetooth mode.

[0059] Embodiment 3

[0060] like Figure 3As shown, this embodiment provides a wireless recording and monitoring system. First, the headset enters the low-latency mode, and any of the wireless headset systems described above is used. The wireless headset and the USB dongle are both provided with at least one microphone, and the microphone is connected to the audio processing module;

[0061] The microphone of one of the wireless earphones is used to collect human voice signals and transmit them to the audio processing module of the wireless earphone;

[0062] The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module;

[0063] The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module;

[0064] The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone.

[0065] And perform noise reduction processing to generate a third audio signal and transmit it to the smart device for recording.

[0066] Specifically, when the earphone is used as a microphone, the earphone can be removed and placed in a place suitable for the user to collect vocal signals. This embodiment can be designed as a lavalier microphone wearing method. One earphone has a wireless recording function, and the other has a monitoring function: the user operates the left or right earphone UI (such as double-clicking), and switches the earphone from the original monitoring function to the microphone function through the control unit module to the MCU management module of the earphone. At least one microphone of the earphone picks up the vocal signal through the audio processing module to the RF module of the earphone, and then to the RF module of the USB dongle through a wireless low-latency private protocol and then to the audio processing module of the USB dongle. At the same time, the microphone of the USB dongle collects environmental noise and also gives it to the audio processing module of the USB dongle. The audio processing module has a built-in distributed microphone noise reduction algorithm (for details, see patent number: 202021518906X, the name of the invention is: a utility model patent for a microphone with active noise reduction function). After processing, a third audio signal is generated and recorded to the smart device through the USB dongle of the digital output module. The other wireless headset performs normal monitoring of embodiment one or two, that is, recording and monitoring are achieved at the same time, and the ear return monitoring and wireless low-latency microphone function switching can be cyclically achieved by operating the headset UI.

[0067] In the second embodiment, when the USB dongle is built-in, the third audio signal generated by the USB dongle audio processing module is transmitted to the USB dongle of the digital output module of the earphone box to be recorded uplink to the smart device, and can also be recorded uplink to other main devices through the analog output module via the earphone socket interface.

[0068] Embodiment 4

[0069] like Figure 4 As shown, this embodiment provides a wireless recording system. First, the headset enters the low-latency mode. Using any of the wireless headset systems described above, the microphones of the two wireless headsets collect human voice signals and transmit them to the audio processing modules of their respective wireless headsets.

[0070] The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module;

[0071] The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module;

[0072] The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone.

[0073] And perform noise reduction processing to generate a fourth audio signal and transmit it to the smart device for recording.

[0074] In this embodiment, both wireless earphones can record at the same time. Specifically, both earphones enter the wireless low-latency microphone function, and the microphones of the two earphones collect vocal signals at the same time. The vocal signal of the left earphone microphone received by the audio processing module of the USB dongle is the left channel, and the vocal signal of the right earphone received is the right channel. (Here, the audio phase synchronization time of the left and right earphones to the dongle is required to be very low, and the phase synchronization is usually guaranteed within 10us). At the same time, the microphone of the USB dongle collects environmental noise and gives it to the USB dongle audio processing module. The environmental noise is then eliminated through the distributed multi-microphone noise reduction algorithm built into the USB dongle audio processing module, thereby improving the vocal reception quality of the earphone microphone. After processing, a fourth audio signal is generated and recorded to the smart device through the USB dongle of the digital output module.

[0075] In the second embodiment, when the USB dongle is built-in, the fourth audio signal generated by the USB dongle audio processing module is transmitted to the USB dongle of the digital output module of the earphone box to be recorded uplink to the smart device, and can also be recorded uplink to other main devices through the analog output module via the earphone socket interface.

[0076] The above is a detailed introduction to a wireless headset system, a wireless recording and monitoring system, and a wireless recording system provided by the embodiments of the present invention. For a person skilled in the art, according to the idea of ​​the embodiments of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A wireless headset system, comprising: An earphone box and a pair of wireless earphones, wherein the wireless earphones are provided with a speaker, wherein a USB dongle is provided on / embedded in the earphone box, and both the USB dongle and the wireless earphones are provided with an RF module and an audio processing module; The USB dongle and the wireless headset are connected via a low-latency private protocol via an RF module; The wireless headset is used to connect to the smart device through the RF module using the standard Bluetooth protocol; The wireless headset and the USB dongle are both provided with a management module, and the RF module and the management module are both connected to the audio processing module; The USB dongle is used to receive a first audio signal from the smart device and transmit it to the speaker of the wireless headset through a low-latency private protocol of the RF module for playback; The wireless headset receives the second audio signal from the smart device through the standard Bluetooth protocol of the RF module and transmits it to the speaker of the wireless headset for playback.

2. The wireless headset system according to claim 1, characterized in that: The USB dongle is connected to the smart device via a USB interface.

3. The wireless headset system according to claim 1, characterized in that: The USB dongle is built in an earphone box, and a management module and a control module are arranged in the earphone box. The management module of the earphone box is connected with the management module of the USB dongle.

4. The wireless headset system according to claim 3, characterized in that: The earphone box is also provided with an input / output module, which is a USB digital or 3.5 earphone analog audio interface, and the input / output module is connected to the audio processing module of the USBdongle; The input / output module is used to receive a first audio signal from the smart device and transmit it to the audio processing module of the USB dongle, and transmit it to the speaker of the wireless headset for playback through the low-latency private protocol of the RF module of the USB dongle.

5. A wireless recording and monitoring system, characterized in that: Using the wireless headset system according to any one of claims 1 to 4, the wireless headset and the USB dongle are each provided with at least one microphone, and the microphone is connected to the audio processing module; The microphone of one of the wireless earphones is used to collect human voice signals and transmit them to the audio processing module of the wireless earphone; The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module; The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module; The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone. And perform noise reduction processing to generate a third audio signal and transmit it to the smart device for recording.

6. The wireless recording and monitoring system according to claim 5, characterized in that: The third audio signal is transmitted to the smart device through the output module for recording.

7. A wireless recording system, characterized in that: Using the wireless headset system described in any one of claims 1 to 4, the microphones of the two wireless headsets both collect human voice signals and transmit them to the audio processing modules of the respective wireless headsets; The RF module of the wireless headset transmits the human voice signal from the audio processing module of the wireless headset to the RF module of the USB dongle through a low-latency private protocol and then transmits it to the audio processing module; The microphone of the USB dongle is used to collect environmental noise and transmit it to the audio processing module; The audio processing module of the USB dongle is used to receive the human voice signal from the RF module and the environmental noise from the microphone. And perform noise reduction processing to generate a fourth audio signal and transmit it to the smart device for recording.

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