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Automobile after-loading system based on bass EQ tuning and tuning method

A bass and automobile technology, applied in vehicle parts, transportation and packaging, frequency/directional characteristic devices, etc., can solve the problems of difficult installation and debugging, high cost, poor sound quality upgrade, etc., to achieve easy installation, low cost, and reduced restoration. Distortion effect

Pending Publication Date: 2022-08-05
SHEN ZHEN NEUSOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a car aftermarket system and tuning method based on bass EQ tuning, to solve the problems of poor sound quality, high cost and difficult installation and debugging of the current car audio system upgrade

Method used

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  • Automobile after-loading system based on bass EQ tuning and tuning method
  • Automobile after-loading system based on bass EQ tuning and tuning method
  • Automobile after-loading system based on bass EQ tuning and tuning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] like figure 1 As shown, the car audio rear-mounted EQ tuning system of this embodiment includes an original car machine 1, a DSP power amplifier board 4, a computer 10, a subwoofer 12, front left, right and rear left and right speakers 16, audio voltage meter 13 .

[0061] The original car machine 1 is the existing car radio of the original car, also known as a car multimedia playback system or a car CD player. The DSP power amplifier board 4 is a PCB board with an intermediate frequency series frequency dividing capacitor 14, a DSP and an EQ processor 5. , subwoofer volume adjuster 21, subwoofer amplifier 6. The original car machine 1 is connected to the DSP power amplifier board 4 through the 4-channel power output line 2, that is, the front left (FL), front right (FR), rear left (RL), rear right ( RR), four high-level power signals are input to the DSP power amplifier board 4, each of these four inputs is connected in series with an intermediate frequency series fr...

Embodiment 2

[0066] like figure 2 As shown, the difference between this embodiment and the first embodiment is that the DSP-USB port 7, the USB connection line 8, the computer USB port 9 and the computer 10 of the first embodiment are cancelled, and replaced by the Bluetooth system 3 and the smart phone 22, That is to say, the DSP power amplifier board 4 is provided with Bluetooth, and the wireless connection between the DSP and the EQ processor 5 and the smart phone 22 is realized through the Bluetooth system 3, and the EQ tuning and subwoofer volume adjustment APP interface is provided on the smart phone 22. You can operate on this interface to complete EQ tuning and subwoofer volume adjustment, and store the final result in DSP and EQ processor 5 to form the default value. After that, every time the car is turned on, the set EQ will be used. and subwoofer volume up. The rest are the same as in Example 1.

[0067] like Figure 4 As shown, the car rear-mounted audio system of the pres...

Embodiment 3

[0075] like Figure 3a , Figure 3b As shown, the subwoofer 12 of the car audio after-installation system of this embodiment is composed of a subwoofer box 18 , an active subwoofer 19 and a passive subwoofer 20 . The passive woofers 20 are arranged in pairs, and the subwoofer box 18 is a closed cavity, which can be made of metal material or plastic. In this embodiment, aluminum profiles and plastic are jointly made. Its volume is about 2.7 liters, which is only half of the volume of the traditional car ultra-thin subwoofer. This embodiment is 298mm long, 199mm wide and 66mm thick, which is easier and more convenient to install in a car with limited space. The ratio of the diaphragm area of ​​the active woofer 19 to that of the passive woofer 20 is 1:1.5 to 2.5, which is 1:2 in this embodiment, that is, the active woofer 19 is a 4-inch woofer unit, and the passive woofer 19 is a 4-inch woofer unit. The woofer 20 is two 4-inch passive woofer units, and the pair of passive woof...

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Abstract

The invention relates to the field of automobile sound systems, in particular to an automobile after-loading system based on bass EQ tuning and a tuning method, and the system comprises an original automobile machine, a DSP power amplifier board, a loudspeaker, a terminal, a subwoofer and an audio voltmeter which are installed in an automobile. Wherein the original vehicle machine is connected with the DSP power amplifier board through a four-channel power input line, and the DSP power amplifier board is connected with the plurality of loudspeakers through a four-channel power output line; the subwoofer comprises a subwoofer box body, and an active woofer loudspeaker and a passive woofer loudspeaker which are arranged in the subwoofer box body; the DSP power amplifier board is respectively connected with an active loudspeaker and an audio voltmeter of the subwoofer through subwoofer connecting lines; the DSP power amplifier board is provided with a DSP-USB port, and the DSP-USB port is connected with a terminal through a USB connecting line. According to the invention, the problem that the factory low-pitch EQ default value of the original vehicle cannot adapt to the after-loading system is solved. And the music preference of the vehicle owner can be realized. Tone tuning can be completed without a tuner or an experienced engineer.

Description

technical field [0001] The invention relates to the field of car audio systems, in particular to a car after-installation system and a tuning method based on bass EQ tuning. Background technique [0002] With the rapid development of the Internet of Vehicles and autonomous driving technology, people have higher and higher requirements for the sound quality of car audio. At present, traditional after-installation products with existing technologies cannot meet people's needs. Cost, the car owner's own DIY car after-installation audio system. The traditional technology of the rear-mounted car audio products, currently nothing more than upgrading and replacing speakers, adding subwoofers, and adding DSP power amplifiers. However, these solutions have the disadvantages of poor sound quality, high cost, difficult installation and debugging, and the owner's own DIY can not be completed. In particular, DSP EQ tuning, generally after the audio modification, can be completed by eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/26H04R3/00B60R16/02
CPCH04R1/26H04R3/00B60R16/02H04R2201/40
Inventor 郑全录于燕燕
Owner SHEN ZHEN NEUSOUND