CN108621930B - Method and system for actively controlling sound enhancement of automobile - Google Patents
Method and system for actively controlling sound enhancement of automobile Download PDFInfo
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- CN108621930B CN108621930B CN201810365015.6A CN201810365015A CN108621930B CN 108621930 B CN108621930 B CN 108621930B CN 201810365015 A CN201810365015 A CN 201810365015A CN 108621930 B CN108621930 B CN 108621930B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/037—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for occupant comfort, e.g. for automatic adjustment of appliances according to personal settings, e.g. seats, mirrors, steering wheel
- B60R16/0373—Voice control
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- Human Computer Interaction (AREA)
- Circuit For Audible Band Transducer (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention discloses a method and a system for actively controlling sound enhancement of an automobile, wherein the method comprises the following steps: the active sounding controller receives the engine speed in the CAN network communication of the whole vehicle, starts an active noise reduction control system and completes control initialization; the entertainment host provides a pre-stored engine sound file list, and passengers can freely select the engine sound file; the active sounding controller receives the selection items of passengers, and calculates the sound playing gain and the sound playing interval corresponding to the engine rotating speed in real time by combining the read engine rotating speed, and performs sound file matching with the vehicle engine rotating speed; the active sounding controller multiplies the sound data to be played by the gain and outputs the sound data to the DA, and the output sound of the speaker on the vehicle is removed, so that the passengers can experience the sound. The invention provides passengers with a plurality of engine sounds which can be freely selected, realizes the conversion of different engine enhanced sounds in the automobile through the active sound production control system, and improves the auditory effect of the engine felt by the passengers.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a method and a system for actively controlling sound enhancement of an automobile.
Background
With the automobile as one of the necessary transportation means in people's life, the sound feeling brought to passengers by the automobile is more and more emphasized. In the industry, some research and development related to engine sound control are focused on active noise reduction to provide passengers with a quiet and comfortable riding environment, and more owners, especially young owners, have increasingly demanded powerful sound and sound quality and texture brought by engines.
Currently, the car sound control is mainly the in-car noise reduction, such as the notice number CN106089361A, the notice date is 2016.11.09, which is named as "an in-car engine active noise reduction system and method", and aims at the implementation of the in-car engine noise. The system is named as an engine sound enhancement system of a vehicle, and is named as CN205652027U, wherein the notice date is 2016.10.19, and the system is used for collecting vibration of an engine shell by a vibration sensor and converting the vibration into gain aiming at the noise of an engine in the vehicle and controlling a loudspeaker to emit enhanced sound. The generated in-vehicle engine enhanced sound is strongly related to the equipped engine of the vehicle, cannot realize diversity selection and is single.
Disclosure of Invention
The invention aims to solve the problems and provides a method and a system for actively controlling sound enhancement of an automobile, which take an electronic control system as a core, establish a communication protocol with an engine CAN network, automatically and accurately capture the rotating speed of the engine, perform real-time matching processing on different engine sound files prestored in a DSP (digital signal processor), and play sound through a vehicle door loudspeaker, thereby realizing diversity and autonomous selection of the engine sound in the automobile and greatly increasing driving perception and driving pleasure.
In order to solve the technical problem, the invention provides a method for actively controlling sound enhancement of an automobile, which comprises the following steps: the method comprises the following steps that firstly, an active sounding controller receives the rotating speed of an engine in the CAN network communication of the whole vehicle, and an active noise reduction control system is started to complete control initialization;
step two, the entertainment host provides a pre-stored engine sound file list, and passengers freely select engine sound files;
step three, the active sounding controller receives the selection items of the passengers, and calculates the sound playing gain and the sound playing interval corresponding to the engine rotating speed in real time by combining the read engine rotating speed, and performs sound file matching with the vehicle engine rotating speed;
step four, the active sounding controller multiplies the sound data to be played by gain and outputs the sound data to the DA, and the sound is output through a speaker on the vehicle so as to enable passengers to experience the sound; the specific method comprises the following steps:
(1) detecting a switch of the active sounding controller, and reading the rotating speed of the engine from the CAN bus if the switch is turned on;
(2) the entertainment host computer on the vehicle runs the active sounding controller file and provides the user with a menu for selecting the sound file;
(3) reading the sound file number selected by the passenger, and calling the corresponding engine sound file;
(4) calculating a gain coefficient Kp of a sound playing interval by combining the engine rotating speed and the engine sound file;
wherein Rmin is the minimum rotation speed of the engine, Rmax is the maximum rotation speed of the engine, the gain rotation speed is Rg, the gain coefficient G is 0.0005, the maximum Tmax of the playing interval is, and the minimum Tmin of the playing interval corresponds to any rotation speed Rx, and the calculation formula of the playing gain and the playing interval is as follows:
playback gain Gx ═ 1+ (Rx-Rg) × G
Playing interval Tx-Tmax- (Rx-Rmin) Kp
The play interval gain coefficient Kp is (Tmax-Tmin)/(Rmax-Rmin);
(5) multiplying the current sound data to be played by the playing gain in the active sound production controller to generate a DA signal of engine enhanced sound;
(6) the active sounding controller mixes the engine enhanced sound DA signal with the entertainment system signal and outputs the signals to a loudspeaker on the vehicle;
(7) the active sounding controller drives a plurality of loudspeakers on the vehicle to sound simultaneously, so that low-frequency powerful engine sound enhancement in the vehicle is realized;
(8) and when the automobile is flamed out, the active sounding controller closes the program and restores the program to the original state of the automobile.
Compared with the prior art, the method and the system for actively controlling the sound enhancement of the automobile break through the limitation of the automobile, provide passengers with a plurality of engine sounds which can be freely selected, realize the conversion of the enhanced sounds of different engines in the automobile through the active sound production control system, greatly improve the auditory effect of the engines felt by the passengers and enhance the driving pleasure.
The invention has the following beneficial effects:
1) the limit value of the vehicle engine is broken through, and passengers can freely select the engine sound effect;
2) the engine enhanced sound and the sound of the entertainment system are perfectly combined and do not interfere with each other;
3) one key is restored, and after the active sounding controller is closed, all the vehicle is restored to the original vehicle state;
drawings
FIG. 1 is a schematic diagram of an automotive active control sound enhancement system;
FIG. 2 is a diagram of a hardware architecture according to the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1, the figure is a schematic diagram of an active control sound enhancement system of an automobile.
The method for actively controlling the sound enhancement of the automobile comprises the following steps:
(1) detecting a switch of the active sounding controller, and reading the rotating speed of the engine from the CAN bus if the switch is turned on;
(2) the entertainment host computer on the vehicle runs the active sounding controller file and provides the user with a menu for selecting the sound file;
(3) reading the sound file number selected by the passenger, and calling the corresponding engine sound file;
(4) calculating a gain coefficient Kp of a sound playing interval by combining the engine rotating speed and the engine sound file;
wherein Rmin is the minimum rotation speed of the engine, Rmax is the maximum rotation speed of the engine, the gain rotation speed is Rg, the gain coefficient G is 0.0005, the maximum Tmax of the playing interval is, and the minimum Tmin of the playing interval corresponds to any rotation speed Rx, and the calculation formula of the playing gain and the playing interval is as follows:
playback gain Gx ═ 1+ (Rx-Rg) × G
Playing interval Tx-Tmax- (Rx-Rmin) Kp
The play interval gain coefficient Kp is (Tmax-Tmin)/(Rmax-Rmin);
(5) multiplying the current sound data to be played by the playing gain in the active sound production controller to generate a DA signal of engine enhanced sound;
(6) the active sounding controller mixes the engine enhanced sound DA signal with the entertainment system signal and outputs the signals to a loudspeaker on the vehicle;
(7) the active sounding controller drives a plurality of loudspeakers on the vehicle to sound simultaneously, so that low-frequency powerful engine sound enhancement in the vehicle is realized;
(8) and when the automobile is flamed out, the active sounding controller closes the program and restores the program to the original state of the automobile.
This patent uses electronic control system as the core, establishes communication protocol with engine CAN network, and automatic accurate engine speed of catching carries out real-time matching processing with the different engine sound files of prestoring in the DSP, carries out the sound broadcast through the door speaker, has realized the interior engine sound's of car variety, autonomous selection, has greatly increased driving perception and driving enjoyment.
Referring to fig. 2, the components of the hardware such as the CAN transceiver, the DSP, the DAC, the low-pass filtering module, the audio mixing module, the high-to-low module, and the power amplifier chip in the figure all belong to the prior art, and as CAN be seen from the figure, the DSP reads the engine speed from the CAN bus, searches and reads the audio file corresponding to the current forwarding period, then calculates the playing interval and gain, mixes the signal with the vehicle output signal, and outputs the signal to the power amplifier chip to drive the speaker to sound.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (1)
1. A method for actively controlling sound enhancement in a vehicle, the method comprising:
the method comprises the following steps that firstly, an active sounding controller receives the rotating speed of an engine in the CAN network communication of the whole vehicle, and an active noise reduction control system is started to complete control initialization;
step two, the entertainment host provides a pre-stored engine sound file list, and passengers freely select engine sound files;
step three, the active sounding controller receives the selection items of the passengers, and calculates the sound playing gain and the sound playing interval corresponding to the engine rotating speed in real time by combining the read engine rotating speed, and performs sound file matching with the vehicle engine rotating speed;
step four, the active sounding controller multiplies the sound data to be played by gain and outputs the sound data to the DA, and the sound is output through a speaker on the vehicle so as to enable passengers to experience the sound; the method specifically comprises the following steps:
(1) detecting a switch of the active sounding controller, and reading the rotating speed of the engine from the CAN bus if the switch is turned on;
(2) the entertainment host computer on the vehicle runs the active sounding controller file and provides the user with a menu for selecting the sound file;
(3) reading the sound file number selected by the passenger, and calling the corresponding engine sound file;
(4) calculating a gain coefficient Kp of a sound playing interval by combining the engine rotating speed and the engine sound file;
wherein Rmin is the minimum rotation speed of the engine, Rmax is the maximum rotation speed of the engine, the gain rotation speed is Rg, the gain coefficient G is 0.0005, the maximum Tmax of the playing interval is, and the minimum Tmin of the playing interval corresponds to any rotation speed Rx, and the calculation formula of the playing gain and the playing interval is as follows:
playback gain Gx ═ 1+ (Rx-Rg) × G
Playing interval Tx-Tmax- (Rx-Rmin) Kp
The play interval gain coefficient Kp is (Tmax-Tmin)/(Rmax-Rmin);
(5) multiplying the current sound data to be played by the playing gain in the active sound production controller to generate a DA signal of engine enhanced sound;
(6) the active sounding controller mixes the engine enhanced sound DA signal with the entertainment system signal and outputs the signals to a loudspeaker on the vehicle;
(7) the active sounding controller drives a plurality of loudspeakers on the vehicle to sound simultaneously, so that low-frequency powerful engine sound enhancement in the vehicle is realized;
(8) and when the automobile is flamed out, the active sounding controller closes the program and restores the program to the original state of the automobile.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109532654A (en) * | 2018-11-14 | 2019-03-29 | 上海迪彼电子科技有限公司 | A kind of engine voice and goers outside vehicle caution sound integrated control system |
| CN109686356A (en) * | 2018-11-14 | 2019-04-26 | 上海迪彼电子科技有限公司 | A kind of vehicle power amplifier integrated system of ANC active noise reduction |
| CN113525271A (en) * | 2020-04-15 | 2021-10-22 | 上海擎感智能科技有限公司 | Vehicle noise reduction method, vehicle machine and computer storage medium |
| CN114121033B (en) * | 2022-01-27 | 2022-04-26 | 深圳市北海轨道交通技术有限公司 | Train broadcast voice enhancement method and system based on deep learning |
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