WO2019140751A1

WO2019140751A1 - Control system and method for automotive loudspeaker power amplifier with singing function

Info

Publication number: WO2019140751A1
Application number: PCT/CN2018/077842
Authority: WO
Inventors: 陈伟
Original assignee: 广州市声鑫电子有限公司
Priority date: 2018-01-19
Filing date: 2018-03-02
Publication date: 2019-07-25
Also published as: WO2019140752A1

Abstract

Disclosed are a control system and method for an automotive loudspeaker power amplifier with a singing function. The control system comprises a wireless microphone receiver and a power amplifier. The wireless microphone receiver comprises a wireless microphone earphone and a microphone receiver connected to the wireless microphone earphone and used for performing the first processing on the received speech signal to obtain a stable audio signal. The power amplifier comprises a power amplifier receiver connected to the microphone receiver and used for performing the second processing on the received speech signal, a power amplifier signal output unit connected to the power amplifier receiver and used for outputting a fidelity audio signal, an automotive loudspeaker signal receiving unit used for transmitting data with the power amplifier signal output unit in a wired manner and receiving the audio signal sent by the power amplifier signal output unit, and an automotive loudspeaker signal conversion unit connected to the automotive loudspeaker signal receiving unit and used for converting the audio signal into a signal that can be received by an automobile power amplifier. According to the present invention, the singing function can be realized by means of an automobile power amplifier.

Description

Control system and method for car audio power amplifier with singing function

Technical field

The invention relates to the technical field of vehicle control, in particular to a control system and method for a car audio power amplifier with a singing function.

Background technique

The singing system is a combination of a music player and recording software. It can play the original sing, or integrate the user's singing into the accompaniment of the song. It can also perform audio effects on the user's singing voice. Finally, the file processed by the sound effect can be processed. Uploading to the network to let more people hear their own songs is a popular entertainment program, so it will cater to the needs of the market in the future, and with the popularity of portable smart devices such as smartphones and tablets, people will sing. It is also gradually transferred to smart terminal devices, but the entertainment activities are not effectively applied on the car. Therefore, in order to make people have a better and more enjoyable life, it is also to ease the driving pressure during the long-distance rest period. Developing a car audio amplifier with singing function is an urgent problem to be solved.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a control system and method for a car audio power amplifier with a singing function in order to solve the above-mentioned deficiencies of the prior art.

In order to achieve the above object, a control system for a car audio power amplifier with a singing function designed by the present invention includes a wireless microphone receiver for wirelessly receiving a signal transmitted by a wireless microphone and a power amplifier having an audio adjustment function. The wireless microphone receiver includes:

a wireless microphone receiver capable of receiving a voice signal;

a microphone receiver connected to the wireless microphone receiver for performing the first processing of the received voice signal through a preamplifier, a sound reverberator, and a power amplifier to achieve frequency modulation, filtering, and smoothing after simulation processing Audio signal

The power amplifier includes:

a power amplifier receiver, the power amplifier receiver is connected to the microphone receiver, and is configured to perform the second processing on the received voice signal to obtain a fidelity audio signal;

a power amplifier signal output unit, wherein the power amplifier signal output unit is connected to the power amplifier receiver for outputting a fidelity audio signal;

The car audio signal receiving unit and the power amplifier signal output unit transmit data through a wired manner for receiving the audio signal sent by the power amplifier signal output unit;

The car audio signal conversion unit is connected to the car audio signal receiving unit for converting the audio signal into a signal that the car amplifier can receive.

Further, the power amplifier further includes an infrared induction auto-frequency modulation unit that automatically receives signals of the same frequency when encountering a frequency corresponding thereto.

Further, the signal receiving mode of the microphone receiver is a frequency wave of a U segment or a V segment receiving an original audio signal emitted from a wireless microphone.

Further, the frequency range of the V segment is 144.000-145.800 MHz, and the frequency range of the U segment is 438.000-440.000 MHz.

Further, the wired when the car audio signal receiving unit is connected to the power amplifier signal output unit refers to a conductive wire having a shielding function or an integrated circuit having an audio fidelity function.

The invention also discloses a control method of a car audio power amplifier with a singing function, comprising a wireless microphone receiver for wirelessly receiving signals transmitted by a wireless microphone and a power amplifier having an audio adjustment function, the wireless microphone receiver The invention comprises a wireless microphone receiver capable of receiving a voice signal, and the microphone receiver is connected to the wireless microphone receiver for performing the first processing of the received voice signal through a preamplifier, a sound reverberator and a power amplifier to implement frequency modulation and filtering. a microphone receiver that obtains a smooth audio signal after the simulation process, and the power amplifier includes a power amplifier receiver that is connected to the microphone receiver for performing the second processing on the received voice signal to obtain a fidelity audio signal. Connected to the power amplifier receiver, the power amplifier signal output unit for outputting the fidelity audio signal, and the power amplifier signal output unit transmit data by means of a wire for receiving the audio signal transmitted by the power amplifier signal output unit Car audio signal receiving unit as well as with car sound The sound signal receiving unit is connected to the car audio signal converting unit for converting the audio signal into a signal that the car power amplifier can receive, and the specific steps include the following steps:

S1, obtaining, by the wireless microphone receiver, the original signal of the U segment or the V segment sent by the wireless microphone in real time;

S2, the original signal received by the preamplifier, the sound reverberator, and the power amplifier are processed for the first time to realize frequency modulation, filtering, and simulation to obtain a smooth audio signal;

S3. Perform audio docking by adjusting the frequency of the power amplifier receiver and the wireless microphone so that the frequencies of the two are the same. After the docking is successful, the audio signal received by the microphone receiver is sent to the power amplifier receiver;

S4, the signal output unit of the power amplifier, the car audio signal receiving unit and the car audio signal conversion unit transmit the processed high-quality audio to the car audio to realize the car audio singing function.

Further, in step S3, the method for adjusting the frequency of the power amplifier receiver and the wireless microphone frequency is as follows: 1. The frequency of the power amplifier receiver is directly set in the V segment frequency range or the U segment frequency range, and then the wireless microphone is The transmitting frequency is directly adjusted to the corresponding frequency; Second, the microphone with the wireless frequency modulation function can directly cross-sweep with the infrared sensing of the power amplifier to realize the docking function.

The invention provides a control system and method for a car audio power amplifier with a singing function, and the invention has the functions of receiving infrared frequency and digital frequency modulation function, U segment or V segment audio signal, and can receive any market. The signals from all the wireless microphones sold, while the U-segment and V-segment audio are currently the best frequency bands for signal fidelity, allowing the car singing system to transmit the received audio signals to the car in the most fidelity form. Acoustic, achieve high-fidelity singing effect.

BRIEF DESCRIPTION OF THE DRAWINGS:

1 is a schematic structural view of a control system of a car audio power amplifier with a singing function in Embodiment 1.

Figure 2 is a schematic view of the working principle of the microphone in the present invention.

In the reference numerals: 1. wireless microphone receiver; 2. power amplifier; 3. wireless microphone receiver; 4. microphone receiver; 5. power amplifier receiver; 6. power amplifier signal output unit; 7. car audio signal receiving unit ; 8. Car audio signal conversion unit; 9. Infrared sensing automatic frequency modulation unit.

Detailed ways

The invention will be further described below in conjunction with the embodiments.

Example:

As shown in FIG. 1 to FIG. 2, a control method of a car audio power amplifier with a singing function provided by the embodiment includes a wireless microphone receiver 1 for wirelessly receiving a signal transmitted by a wireless microphone and an audio adjustment function. A power amplifier 2, wherein the wireless microphone receiver 1 comprises:

a wireless microphone receiver 3 capable of receiving a voice signal;

A microphone receiver 4 is connected to the wireless microphone receiver 3 for performing the first processing of the received voice signal through a preamplifier, a sound reverberator, and a power amplifier to implement frequency modulation, filtering, and simulation processing. After getting a smooth audio signal;

The power amplifier 2 includes:

a power amplifier receiver 5, the power amplifier receiver 5 is connected to the microphone receiver 4, and is configured to perform a second processing on the received voice signal to obtain a fidelity audio signal;

a power amplifier signal output unit 6, the power amplifier signal output unit 6 is connected to the power amplifier receiver 5 for outputting a fidelity audio signal;

The car audio signal receiving unit 7 and the power amplifier signal output unit 6 transmit data by means of a wire for receiving the audio signal transmitted by the power amplifier signal output unit 6;

The car audio signal conversion unit 8 is connected to the car audio signal receiving unit 7 for converting the audio signal into a signal that the car amplifier can receive.

Further, the power amplifier 2 further includes an infrared induction auto-frequency modulation unit 9 that automatically receives signals of the same frequency when it encounters a frequency corresponding thereto.

Further, the signal receiving mode of the microphone receiver 4 is a frequency wave of a U segment or a V segment receiving an original audio signal from a wireless microphone.

Further, the wired when the car audio signal receiving unit 7 is connected to the power amplifier signal output unit 6 refers to a conductive wire having a shielding function or an integrated circuit having an audio fidelity function.

The embodiment further discloses a control method of a car audio power amplifier with a singing function, comprising a wireless microphone receiver 1 for wirelessly receiving a signal transmitted by a wireless microphone and a power amplifier 2 having an audio adjustment function, the wireless The microphone receiver 1 includes a wireless microphone receiver 3 capable of receiving a voice signal, and the microphone receiver 4 is connected to the wireless microphone receiver 3 for performing the first voice signal through a preamplifier, a sound reverberator, and a power amplifier. Sub-processing, implementing frequency modulation, filtering, and simulation processing to obtain a smooth audio signal of the microphone receiver 4, the power amplifier 2 includes a microphone receiver 4 for performing a second processing on the received voice signal. A power amplifier receiver 5 that obtains a fidelity audio signal is connected to the power amplifier receiver 5, and the power amplifier signal output unit 6 for outputting the fidelity audio signal and the power amplifier signal output unit 6 transmit data by means of a wire. Car audio signal receiving unit 7 for receiving an audio signal transmitted by the power amplifier signal output unit 6 And a car audio signal conversion unit 8 connected to the car audio signal receiving unit 7 for converting the audio signal into a signal that the car amplifier can receive. The specific steps of the method are:

S1, the wireless microphone receiver 3 obtains the original signal of the U segment or the V segment sent by the wireless microphone in real time;

S3, by adjusting the frequency of the power amplifier receiver 5 and the wireless microphone so that the frequency of the two is consistent, the audio docking is performed, after the docking is successful, the audio signal received by the microphone receiver 4 is sent to the power amplifier receiver 5;

S4, the amplifier audio output unit 6, the car audio signal receiving unit 7, and the car audio signal conversion unit 8 transmit the processed high-quality audio to the car audio to realize the car audio singing function.

Further, in step S3, the method for adjusting the frequency of the power amplifier receiver 5 and the wireless microphone frequency is as follows: 1. The frequency of the power amplifier receiver 5 is directly set in the V segment frequency range or the U segment frequency range, and then the wireless The transmitting frequency of the microphone is directly adjusted to the corresponding frequency; 2. The microphone with the wireless frequency modulation function can directly cross-sweep with the infrared sensing of the power amplifier 2 to realize the docking function.

This embodiment has the following advantages:

The invention creates the receiving function of the infrared frequency and the digital frequency modulation function, the U segment or the V segment audio signal, and can receive the signals sent by all the wireless microphones sold in any market, and the U segment and the V segment audio are currently recognized. The best frequency band of the signal fidelity, so that the car singing system can transmit the received audio signal to the car audio in the most fidelity form, achieving high-fidelity singing effect.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A car navigation system with wireless singing function, comprising a wireless microphone receiver (1) for wirelessly receiving signals transmitted by a wireless microphone and a car navigation system (2), characterized in that the wireless microphone receiver (1) include:

a wireless microphone receiver capable of receiving a voice signal (3);

a microphone receiver (4), the microphone receiver (4) being connected to the wireless microphone receiver (3) for performing the first processing of the received voice signal through a preamplifier, a sound reverberator, and a power amplifier. Frequency modulation, filtering, and simulation to obtain a smooth audio signal;

The car navigation system (2) includes:

a broadcast module (6) for performing sound amplification and broadcast processing on each signal;

a GPS module (16) for receiving information transmitted by the satellite;

The wireless communication module (17) adopts a car radiotelephone, a radio station or a mobile data terminal to complete the information interaction function;

The alarm module (5) sends an alarm signal to the monitoring center network to notify the vehicle abnormal information message;

The display module (7) is used for displaying video image information such as position road conditions, and selecting an LCD, CRT or TV display PC module;

An embedded processor (8) with a travel speed sensor (13) and associated software to perform the specified function and connected to the microphone receiver (4) for second processing of the received speech signal Obtaining a fidelity audio signal and transmitting it to the broadcast module (6) for broadcast; and controlling the size change of the voice when singing according to the speed change during the driving process of the car;

Electronic map module (9), storing rich city maps, national road network maps, gas stations, convenience stores, government agencies, tourist attractions, restaurants, parking lots;

The self-discipline navigation module (10) automatically imports the autonomous navigation system when the vehicle travels to the underground tunnel, the high-rise building group, or the shelter of the highway without capturing the GPS satellite signal;

The map matching module (11) has a certain error between the position and the forward direction of the vehicle measured by the GPS satellite navigation and the autonomous navigation system. In order to correct these errors, map matching technology is needed;

The fueling reminding module (12) obtains the remaining oil quantity of the vehicle, and calculates the vehicle cruising distance according to the average fuel consumption; determines whether the remaining oil quantity is less than the preset oil quantity threshold, or whether the vehicle cruising distance is less than the preset path valve a value; if the residual oil amount is less than a preset oil amount threshold, or the vehicle cruising distance is less than a preset path threshold, searching for a gas station through a car navigation system;

The information data transmission of the GPS module (16) has the following processes: opening a Bluetooth communication function of the car navigation system, and establishing a wireless communication connection with the mobile phone in the vehicle; acquiring GPS information data by using the GPS function of the car navigation system, and The GPS information data is sent to the mobile phone through wireless communication; the GPS information data is acquired by using the mobile phone Bluetooth communication module on the mobile phone, and the GPS information data is used for position location.
A car navigation system with wireless singing function according to claim 1, characterized in that the car navigation system (2) further comprises a signal anti-interference circuit (14).
A car navigation system with wireless singing function according to claim 1 or 2, characterized in that the car navigation system (2) further comprises a solar power supply module (15).
A control method for a car audio power amplifier with a singing function, comprising a wireless microphone receiver (1) for wirelessly receiving a signal transmitted by a wireless microphone, and a car navigation system (2), the wireless microphone receiver (1) comprising a wireless microphone receiver (3) capable of receiving a voice signal; a microphone receiver (4) coupled to the wireless microphone receiver (3) for passing the received voice signal through a preamplifier, The sound reverberator and the power amplifier perform the first processing to realize frequency modulation, filtering, and simulation to obtain a smooth audio signal; the car navigation system (2) includes: a broadcast module (6) for expanding each signal Audio broadcast processing; GPS module (16) for receiving information transmitted by satellite; wireless communication module (17), using car radio, radio or mobile data terminal to complete information interaction function; alarm module (5), monitoring The central network sends an alarm signal to notify the vehicle of abnormal information; the display module (7) is used to display video image information such as positional road conditions, and selects an LCD, CRT or TV display PC module; The input processor (8), with a travel speed sensor (13), and corresponding software, completes the designated function, and is connected with the microphone receiver (4) for performing the second processing of the received voice signal Obtain a fidelity audio signal and send it to the broadcast module (6) for broadcast; and control the size change of the voice when singing according to the speed change during the driving process of the car; the electronic map module (9), which stores a rich city map, the whole country Road network maps, gas stations, convenience stores, government agencies, tourist attractions, restaurants, parking lots; self-discipline navigation module (10), when the car travels to underground tunnels, high-rise buildings, highway shelters to capture When the GPS satellite signal is not available, the system automatically imports the autonomous navigation system; the map matching module (11), the GPS position and the forward direction of the GPS satellite navigation and the autonomous navigation system have certain errors with the actual route trajectory. In order to correct these errors, map matching technology is needed. The fueling reminding module (12) obtains the residual oil quantity of the vehicle and calculates the vehicle life path based on the average fuel consumption. Calculating whether the residual oil amount is less than a preset oil amount threshold, or whether the vehicle cruising distance is less than a preset path threshold; if the residual oil amount is less than a preset oil amount threshold, or the vehicle is in a life If the distance is less than the preset path threshold, the gas station is searched by the car navigation system, and the specific steps of the method are:

S1, the original signal sent by the wireless microphone is obtained by the wireless microphone receiver (3) in real time;

S2, the original signal received by the preamplifier, the sound reverberator, and the power amplifier are processed for the first time to realize frequency modulation, filtering, and simulation to obtain a smooth audio signal;

S3, connected to the microphone receiver (4) through the embedded processor (8) to receive the audio signal for the second processing, and obtain a fidelity audio signal and send it to the broadcast module (6) for broadcast transmission, when in use During the process of singing, according to the speed change during the driving process of the car to control the size of the voice changes when singing, the speed is fast, the singing volume is small, on the contrary, the singing volume is large; finally, the car navigation sound singing function is implemented on the car navigation system;

S4. At the same time, the driver is provided with the route service; the GPS information data acquired by the car navigation system is used, and then the GPS information data acquired by the car navigation system is transmitted to the Bluetooth communication module disposed therein by wireless communication. On the mobile phone, the mobile phone obtains accurate GPS information data, overcomes the problem that the mobile phone can not normally acquire the GPS information data in the vehicle, cannot use the location-related application, and provides convenience for the user's travel; searches for nearby travel through the car navigation system. gas.

The method for controlling a car audio power amplifier with a singing function according to claim 4, characterized in that the solar power supply can also be realized by the solar power supply module (15).