WO2019148424A1

WO2019148424A1 - Wireless microphone

Info

Publication number: WO2019148424A1
Application number: PCT/CN2018/074954
Authority: WO
Inventors: 赵广辉
Original assignee: 捷永广建电子（深圳）有限公司
Priority date: 2018-02-01
Filing date: 2018-02-01
Publication date: 2019-08-08

Abstract

The present invention is applicable to the technical field of audio, and provides a wireless microphone, comprising: a signal input unit configured to receive an audio signal sent by a signal input device over a wireless communication protocol, and to send the audio signal to a signal processing unit; a voice input unit configured to receive an input voice signal and to send the voice signal to the signal processing unit; the signal processing unit configured to process the audio signal and the voice signal according to a preset processing mode, and to send the processed voice signal to a signal output unit; and the signal output unit configured to send the received voice signal to an external sound system over a wireless communication protocol, such that the external sound system plays the received voice signal. The wireless microphone provided by the present invention realizes wireless connection to both a signal input device and an external sound system at the same time, and enables different voice signals to be output according to different usage scenarios, so as to meet different requirements of users.

Description

Wireless microphone

The present invention belongs to the field of audio technologies, and in particular, to a wireless microphone.

With the gradual popularization of mobile terminals such as smart phones and tablet computers, various karaoke softwares for mobile terminals have appeared, and K songs have gradually become popular personal entertainment methods. Conventional wireless microphones require complex receiving ends and cannot be connected to devices with Bluetooth or other wireless communication protocols, thus making it impossible to connect with existing mobile terminals such as smartphones and tablets.

The inventor of the present invention found in the process of the present application that in order to solve the above problem, when the user is in K song, the wired microphone earphone needs to be inserted into the mobile terminal or directly uses the microphone and speaker provided by the mobile terminal, and the former user is subject to The cable's restraint experience is not good, the latter is easy to produce echoes and the song effect is worse. At the same time, when the user needs to transmit the sound of the K song to the external device such as the audio, the microphone and the external device need to be wired. Connecting, the connection is cumbersome and time consuming.

Summary of the invention

In order to solve the above problems, the present invention provides a wireless microphone.

The present invention is achieved by a wireless microphone including a signal input unit, a voice input unit, a signal processing unit, and a signal output unit;

The signal input unit is respectively connected to the signal input device and the signal processing unit for receiving an audio signal sent by the signal input device by using a wireless communication protocol, and transmitting the audio signal to the signal processing unit ;

The voice input unit is connected to the signal processing unit for receiving an input voice signal, and transmitting the voice signal to the signal processing unit;

The signal processing unit is configured to process the audio signal and the voice signal according to a preset processing mode, and send the processed voice signal to the signal output unit;

The signal output unit is configured to send the received voice signal to an external sound system through a wireless communication protocol, so that the external sound system plays the received voice signal.

Further, the signal input unit and the signal output unit communicate via a UART communication protocol.

Further, the signal input unit is a chip using a low latency technique.

Further, the signal output unit is a chip using a low latency technique.

Further, the signal processing unit includes a processing module, an output mode setting module connected to the processing module;

The output mode setting module is configured to receive an output mode setting instruction, and send an output mode to the processing module, where the output mode includes an original sound output mode and a reverberation output mode;

The processing module is respectively connected to the signal input unit, the voice input unit and the signal output unit, and is configured to perform an operation amplification process on the voice signal when receiving the original sound output mode, The processed voice signal is sent to the signal output unit; and is further configured to perform reverberation processing on the voice signal and the audio signal when receiving the reverberation output mode, and obtain a reverberation signal obtained by reverberation processing The operational amplification is performed, and the operationally amplified reverberation signal is transmitted to the signal output unit.

Further, the wireless microphone further includes a reverberation time setting module connected to the processing module;

The reverberation time setting module is configured to receive a reverberation time setting instruction, and send the reverberation time to the processing module;

The processing module is further configured to process the voice signal and the video signal according to a reverberation output mode during the reverberation time, and the voice signal is performed according to an original sound output mode in the non-reverberation time For processing.

Further, the wireless microphone further includes a sound adjustment module connected to the processing module;

The sound adjustment module is configured to receive a sound adjustment instruction, and send an adjustment mode to the processing module, where the adjustment mode includes a sound amplification mode and a sound reduction mode;

The processing module is further configured to: adjust the processed speech signal or the operationally amplified reverberation signal according to the adjustment mode, and send the adjusted speech signal or reverberation signal to the signal Output unit.

Compared with the prior art, the present invention has the beneficial effects that the present invention wirelessly connects with a signal input device including a smart phone, a tablet computer, etc. through a wireless communication protocol, and inputs an input voice signal and an audio signal according to a preset processing mode. Processing, the processed voice signal is sent to the external sound system through a wireless communication protocol, and the wireless microphone provided by the invention can simultaneously realize the wireless connection with the signal input device and the external sound system, and can be used according to different uses. The scene outputs different voice signals to meet the different needs of users.

DRAWINGS

1 is a schematic structural diagram of a wireless microphone according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a signal processing unit according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Figure 1 shows a wireless microphone provided by an embodiment of the present invention, comprising a signal input unit 1, a voice input unit 2, a signal processing unit 3 and a signal output unit 4;

The signal input unit 1 is respectively connected to the signal input device and the signal processing unit 3 for receiving an audio signal transmitted by the signal input device via a wireless communication protocol, and transmitting the audio signal to the signal processing unit 3. Specifically, the signal input unit 1 is connected to the signal input device via Bluetooth or other wireless communication protocol, and the signal input device includes a smart phone, a tablet computer, a music player, a smart TV, etc., having a Bluetooth function or other wireless communication protocols. After the signal input device establishes a connection with the signal input unit 1, the signal input device can transmit the audio signal to the signal input unit 1 through a Bluetooth communication protocol or a wireless communication protocol. The audio signal specifically includes audio signals such as music accompaniment.

The voice input unit 2 is connected to the signal processing unit 3 for receiving an input voice signal and transmitting the voice signal to the signal processing unit 3. In a specific application, the user directly inputs a voice signal through the voice input unit 2, and the voice input unit 2 transmits the received voice signal of the user to the signal processing unit 3.

The signal processing unit 3 is configured to process the audio signal and the voice signal according to a preset processing mode, and send the processed voice signal to the signal output unit 4;

The signal output unit 4 is configured to send the received voice signal to the external sound system through a wireless communication protocol, so that the external sound system plays the received voice signal.

In the actual application, the existing wireless microphone has a problem of sound delay during use, and the overall delay time is from 100 ms to 500 ms. In order to solve the problem of the sound delay, in the present embodiment, the signal input unit 1 and the signal output Unit 4 uses a chip with aptX low latency technology. More specifically, the chip uses a CSR8670 Bluetooth chip. Meanwhile, the signal input unit 1 and the signal output unit 4 of the wireless microphone provided by the embodiment adopt the CSR8670 Bluetooth chip, in order to avoid the signal input unit 1 when the wireless microphone is paired with an external system such as a signal input device and an external sound system. In the present embodiment, the signal input unit 1 and the signal output unit 4 use the UART communication protocol to read each other's chip addresses, and when the wireless microphone is paired with the external system, The read chip address of the other party is paired and limited, and the problem that the signal input unit 1 and the signal output unit 4 are paired with each other is solved. The working principle of the UART communication protocol is: after the system is powered on, the signal input unit will send a command to the signal output unit to inquire its Bluetooth address, and the signal input unit will read its own address and send the signal through the serial port when receiving the command of obtaining the address of the input unit. Output unit.

In order to be able to solve the different needs of the user when using the wireless microphone, the embodiment of the present invention provides a signal processing unit as shown in FIG. 2, including a processing module 31, and an output mode setting module 32 connected to the processing module 31;

The output mode setting module 32 is configured to receive an output mode setting instruction, acquire an output mode in the output mode setting instruction, and send the output mode to the processing module 31, where the output mode includes an original sound output mode and a reverberation output. mode. Specifically, the original sound output mode is that no additional reverberation processing is performed on the input voice signal, only the output mode of the original sound is output, and the reverberation output mode is outputting the reverberation signal after performing processing such as reverberation on the input voice signal. mode.

The processing module 31 is respectively connected to the signal input unit 1, the voice input unit 2 and the signal output unit 4, and is configured to perform an operation amplification process on the voice signal when the original sound output mode is received, and the processed voice is processed. The signal is sent to the signal output unit 4; and is further configured to perform reverberation processing on the voice signal and the audio signal when the reverberation output mode is received, and perform operation amplification on the reverberation signal obtained by the reverberation process, The amplified reverberation signal is sent to the signal output unit 4.

The output mode setting module 32 in this embodiment provides a switch option including an acoustic output and a reverberation output, and the user can select any switch option according to his own needs. When the user selects the switch option, the output mode setting command is triggered, and the output mode setting module 32 will acquire the output mode in the output mode setting command and send the output mode to the processing module 31. In a specific application, the output mode setting module 32 may be a simple common switch or a touch screen with a switch option, and is not specifically limited herein.

Further, the signal processing unit 3 further includes a reverberation time setting module 33 respectively connected to the processing module 31;

a reverberation time setting module 33, configured to receive a reverberation time setting instruction, acquire a reverberation time in the reverberation time setting instruction, and send the reverberation time to the processing module;

The processing module 31 is further configured to process the voice signal and the video signal according to a reverberation output mode during the reverberation time, and pair the voice signal according to an original sound output mode in the non-reverberation time deal with.

Specifically, the user can set the reverberation time through the reverberation time setting module 33. When the user performs the K song by using the wireless microphone provided in this embodiment, the user can set the B time from the song A to the C when the song A is sung. Reverberation is performed at all times, and the original sound output is achieved at other times. The reverberation time setting module 33 sends the reverberation time to the processing module 31 after receiving the reverberation time set by the user. After receiving the reverberation time, the processing module 31 performs reverberation processing according to the reverberation time.

Further, the signal processing unit 3 further includes a sound adjustment module 34 respectively connected to the processing module 31;

The sound adjustment module 34 is configured to receive a sound adjustment instruction, acquire the adjustment mode in the sound adjustment instruction, and send the adjustment mode to the processing module, where the adjustment mode includes a sound adjustment mode and Sound mode

The processing module 31 is further configured to adjust the processed speech signal or the operationally amplified reverberation signal according to the adjustment mode, and send the adjusted speech signal or reverberation signal to the signal output unit 4 .

Specifically, the user can adjust the sound size of the wireless microphone output during the process of using the wireless microphone, and the implementation manner can be adjusted by a simple physical button, or can be adjusted by using a touch screen with an adjustment function, which is not described herein.

In the above embodiment provided by the invention, the output mode setting module 32, the reverberation time setting module 33, and the sound adjustment module 34 can be integrated together, and implemented by a touch screen with display function and human-computer interaction. In the specific use process, the wireless microphone provided in this embodiment has a built-in battery to ensure that the above unit can work normally. At the same time, the wireless microphone provided in this embodiment uses LEDs to indicate the power of the built-in battery, and the user can connect according to the usage of the battery. The MICRO-USB interface is used for charging.

The wireless microphone provided in this embodiment realizes a true wireless connection by using a Bluetooth transmission protocol at a signal input end and a signal output end, and the chip adopting aptX low-latency technology can provide not only high-quality audio without loss but also low supply. Low latency output performance up to 40ms.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A wireless microphone, characterized in that the wireless microphone comprises a signal input unit, a voice input unit, a signal processing unit and a signal output unit;
The signal input unit is respectively connected to the signal input device and the signal processing unit for receiving an audio signal sent by the signal input device by using a wireless communication protocol, and transmitting the audio signal to the signal processing unit ;
The voice input unit is connected to the signal processing unit for receiving an input voice signal, and transmitting the voice signal to the signal processing unit;
The signal processing unit is configured to process the audio signal and the voice signal according to a preset processing mode, and send the processed voice signal to the signal output unit;
The signal output unit is configured to send the received voice signal to an external sound system through a wireless communication protocol, so that the external sound system plays the received voice signal.
The wireless microphone according to claim 1, wherein said signal input unit and said signal output unit communicate via a UART communication protocol.
The wireless microphone of claim 1 wherein said signal input unit is a chip using low latency techniques.
The wireless microphone of claim 1 wherein said signal output unit is a chip using low latency techniques.
The wireless microphone according to claim 1, wherein the signal processing unit comprises a processing module, an output mode setting module connected to the processing module;
The output mode setting module is configured to receive an output mode setting instruction, and send an output mode to the processing module, where the output mode includes an original sound output mode and a reverberation output mode;
The processing module is respectively connected to the signal input unit, the voice input unit and the signal output unit, and is configured to perform an operation amplification process on the voice signal when receiving the original sound output mode, The processed voice signal is sent to the signal output unit; and is further configured to perform reverberation processing on the voice signal and the audio signal when receiving the reverberation output mode, and obtain a reverberation signal obtained by reverberation processing The operational amplification is performed, and the operationally amplified reverberation signal is transmitted to the signal output unit.
The wireless microphone according to claim 5, wherein the wireless microphone further comprises a reverberation time setting module connected to the processing module;
The reverberation time setting module is configured to receive a reverberation time setting instruction, and send the reverberation time to the processing module;
The processing module is further configured to process the voice signal and the video signal according to a reverberation output mode during the reverberation time, and the voice signal is performed according to an original sound output mode in the non-reverberation time For processing.
The wireless microphone according to claim 5, wherein the wireless microphone further comprises a sound adjustment module connected to the processing module;
The sound adjustment module is configured to receive a sound adjustment instruction, and send an adjustment mode to the processing module, where the adjustment mode includes a sound amplification mode and a sound reduction mode;
The processing module is further configured to: adjust the processed speech signal or the operationally amplified reverberation signal according to the adjustment mode, and send the adjusted speech signal or reverberation signal to the signal Output unit.