CN109774629B - Vehicle sound effect automatic adjustment method and system and vehicle - Google Patents
Vehicle sound effect automatic adjustment method and system and vehicle Download PDFInfo
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Abstract
The invention provides a method and a system for automatically adjusting vehicle sound effect and a vehicle. The method comprises the following steps: acquiring and pre-storing optimal sound effect characteristics based on a carriage space; acquiring actual sound effect characteristics which are based on the compartment space and have the same properties as the optimal sound effect characteristics; analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic; and compensating the actual sound effect characteristic according to the difference so as to obtain a target sound effect characteristic close to the optimal sound effect characteristic. According to the automatic adjusting method for the vehicle sound effect, after the sound effect device is changed, the target sound effect characteristic close to the optimal sound effect characteristic can be obtained, so that the in-vehicle sound effect after the sound effect device is changed approaches to the originally set optimal sound effect, and the use performance of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of vehicle sound effect control, in particular to a vehicle sound effect automatic adjusting method, and also relates to a system based on the adjusting method and a vehicle with the system.
Background
Before the automobile leaves the factory, the sound effect of the whole automobile is debugged and set to be the optimal sound effect according to the audio performance of a multimedia host, a power amplifier or a loudspeaker, the internal space of the whole automobile and other factors. However, in the actual use process of the vehicle, after a vehicle owner changes the sound effect devices such as the multimedia host, the power amplifier or the loudspeaker in the vehicle, because the changed audio performance of the multimedia host, the power amplifier or the loudspeaker is different from the original device, the sound effect of the whole vehicle is correspondingly changed, the music experience of passengers is influenced, even if a plurality of sound modification shops can tune the sound effect of the whole vehicle after the multimedia host, the power amplifier or the loudspeaker is changed, the tuning specialty is limited, and the sound effect of the whole vehicle is difficult to achieve the optimal state.
Disclosure of Invention
In view of the above, the present invention is directed to a method for automatically adjusting a sound effect of a vehicle, so as to optimize the sound effect of the vehicle after a sound effect device is changed.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a method for automatically adjusting the sound effect of a vehicle comprises the following steps:
acquiring and pre-storing optimal sound effect characteristics based on a carriage space;
acquiring actual sound effect characteristics which are based on the compartment space and have the same properties as the optimal sound effect characteristics;
analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic;
and compensating the actual sound effect characteristic according to the difference so as to obtain a target sound effect characteristic close to the optimal sound effect characteristic.
Further, the optimal sound effect characteristic is a characterization curve composed of a plurality of sound effect parameters.
Further, the optimal sound effect characteristic is a frequency response curve.
Further, before analyzing the difference between the actual sound effect characteristics and the optimal sound effect characteristics, the optimal sound effect characteristics and the actual sound effect characteristics are converted into digital signals.
Furthermore, a sound effect acquisition device used for acquiring actual sound effect characteristics under the space of the carriage is arranged in the carriage.
Further, the sound effect acquisition device is respectively arranged at four corners close to the inside of the carriage.
Compared with the prior art, the automatic adjusting method for the vehicle sound effect has the following advantages:
according to the automatic vehicle sound effect adjusting method, after the sound effect device is changed, the changed sound effect characteristics in the carriage can be collected, the actual sound effect characteristics are compensated by analyzing the difference between the actual sound effect characteristics and the optimal sound effect characteristics, so that the target sound effect characteristics close to the optimal sound effect characteristics are obtained, the changed vehicle sound effect of the sound effect device approaches to the originally set optimal sound effect, and the use performance of the vehicle is improved.
In addition, the invention also provides a system for automatically adjusting the sound effect of the vehicle, which comprises:
a main controller;
the storage unit is connected with the main controller and used for storing the optimal sound effect characteristic based on the carriage space;
the sound effect acquisition device is connected with the main controller and is used for acquiring the actual sound effect characteristics under the carriage space;
the calculation unit is connected with the main controller and used for analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic;
according to the difference, the main controller compensates the actual sound effect characteristic to obtain a target sound effect characteristic close to the optimal sound effect characteristic.
Further, the sound effect obtaining device is a microphone.
Further, the system further comprises:
and the switch unit is connected with the main controller to trigger the analysis operation of the calculation unit.
Meanwhile, the invention also relates to a vehicle, wherein the vehicle sound effect automatic adjusting system is loaded on the vehicle.
Compared with the prior art, the automatic vehicle sound effect adjusting system and the vehicle have the same effect as the automatic vehicle sound effect adjusting method, and are not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a connection block diagram of an automatic sound effect adjustment system for a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sound effect curve in the method for automatically adjusting the sound effect of a vehicle according to the embodiment of the present invention;
description of reference numerals:
1-a main controller; 2-a storage unit; 3-sound effect acquisition means; 4-a calculation unit; 5-a switching unit.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The present embodiment relates to a vehicle sound effect automatic adjustment system, which is shown in fig. 1 and mainly comprises a main controller 1, a storage unit 2, a sound effect obtaining device 3 and a calculating unit 4.
The main controller 1 serves as a core control unit of the whole system, and may adopt elements having a control function, such as a single chip microcomputer and other devices having a data processing function, and in the present embodiment, may adopt a vehicle ECU.
The storage unit 2 is connected with the main controller 1 and used for storing optimal sound effect characteristics based on the compartment space; in this embodiment, the optimal sound effect characteristic may be that when the vehicle leaves the factory, the entire factory debugs the sound effect of the entire vehicle according to the audio performance of the multimedia host, the power amplifier, or the speaker, the internal space of the entire vehicle (such as the internal volume of the vehicle, the material in the vehicle, and the like), and sets the parameter with the optimal sound effect after debugging as the optimal sound effect characteristic. In the present embodiment, the optimal sound effect characteristic is a sound effect frequency response curve.
The sound effect acquisition device 3 is connected with the main controller 1 and is used for acquiring the actual sound effect characteristics in the compartment space; and setting the optimal sound effect characteristic as a sound effect frequency response curve, wherein the actual sound effect characteristic is also the sound effect frequency response curve. In addition, in the embodiment, the sound effect obtaining device 3 is a microphone, and an ANC (active noise reduction) microphone may be used to better improve the overall effect. In order to further improve the actual sound effect characteristic obtaining effect, in the present embodiment, the sound effect obtaining means 3 are four disposed at four corners near the inside of the vehicle compartment.
The calculation unit 4 is connected with the main controller 1 to analyze and calculate the difference between the actual sound effect characteristic and the optimal sound effect characteristic; based on the actual sound effect characteristics and the optimal sound effect characteristics, sound effect frequency response curves are adopted, and the difference obtained by analyzing the calculation unit 4 is also based on the sound effect frequency response curves formed under different frequencies.
In addition, in order to realize the controllability of the whole system, in this embodiment, a switch unit 5 connected to the main controller 1 is further provided, and the switch unit 5 is controlled to control whether the computing unit 4 is triggered to work, so that the main controller 1 compensates the actual sound effect characteristics according to the difference, and the target sound effect characteristics close to the optimal sound effect characteristics are obtained.
Based on the automatic vehicle sound effect adjusting system, the automatic vehicle sound effect adjusting method provided by the invention mainly comprises the following steps:
acquiring and pre-storing optimal sound effect characteristics based on a carriage space;
acquiring actual sound effect characteristics which are based on the compartment space and have the same properties as the optimal sound effect characteristics;
analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic;
and compensating the actual sound effect characteristic according to the difference so as to obtain a target sound effect characteristic close to the optimal sound effect characteristic.
Based on the overall idea of the above method, specifically, in this embodiment, the method mainly includes the following steps:
activating the automatic vehicle sound effect adjusting system through the control switch unit 5 to obtain the target sound effect characteristics;
acquiring actual sound effect characteristics which are based on the carriage space and have the same properties as the optimal sound effect characteristics through a sound effect acquisition device 3; in this embodiment, the same property as the optimal sound effect characteristic refers to a sound parameter at the same frequency;
the optimum acoustics feature and the actual acoustics feature are converted into digital signals to form an optimum acoustics curve M (shown by a thick solid line in fig. 2) and an actual acoustics curve N (shown by a thin solid line in fig. 2) as shown in fig. 2. Based on the value of the actual sound effect curve N corresponding to the value of the optimal sound effect curve M at each frequency, the difference value at each frequency is calculated by the calculating unit 4. For example, in fig. 2, the optimal acoustics curve M is composed of a plurality of power values corresponding to different frequencies; the actual sound effect curve N is composed of a plurality of actual power values corresponding to different frequencies in a coherent manner. It can be seen from the figure that, under the same power, the power value in the optimal sound effect curve M is different from the power value in the actual sound effect curve N. Taking the curves corresponding to the frequency values of a, B, C and N as examples, the power values of the optimal sound effect curve M at the frequency values of a, B, C and N are respectively a1, B1, C1 and N1, and meanwhile, the values a2, B2, C2 and N2 of the actual sound effect curve N at the corresponding frequency values are found according to the frequency values, and there is a difference between the two corresponding values, so that after the difference is calculated by the calculating unit 4, the actual sound effect characteristic is compensated by the main controller 1 to generate compensation values A3, B3, C3 and N3, and after the compensation values are calculated, a compensation sound effect curve Q is generated, thereby finally obtaining the target sound effect characteristic close to the optimal sound effect characteristic by the method.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A method for automatically adjusting the sound effect of a vehicle is characterized by comprising the following steps:
after the sound effect device is changed, acquiring and pre-storing the optimal sound effect characteristic based on the carriage space;
acquiring actual sound effect characteristics which are based on the compartment space and have the same properties as the optimal sound effect characteristics;
analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic, converting the optimal sound effect characteristic and the actual sound effect characteristic into digital signals before analyzing the difference between the actual sound effect characteristic and the optimal sound effect characteristic to form an optimal sound effect curve and an actual sound effect curve, and calculating the difference value under each frequency based on the numerical value of the actual sound effect curve corresponding to the numerical value under each frequency of the optimal sound effect curve;
generating a plurality of compensation values according to the difference, generating a compensation sound effect curve, and compensating the actual sound effect characteristic through the compensation sound effect curve to obtain a target sound effect characteristic close to the optimal sound effect characteristic;
the actual sound effect characteristic is through in the sound effect acquisition device that sets up in the carriage acquires, sound effect acquisition device is for arranging separately and is close to four of the inside four angular point departments in carriage, the optimal sound effect characteristic is the frequency response curve.
2. An automatic vehicle sound effect adjusting system, which is based on the automatic vehicle sound effect adjusting method of claim 1 and comprises:
a main controller (1);
the storage unit (2) is connected with the main controller (1) and is used for storing optimal sound effect characteristics based on the space of a carriage;
the sound effect acquisition device (3) is connected with the main controller (1) and is used for acquiring the actual sound effect characteristics under the carriage space;
the computing unit (4) is connected with the main controller (1) and analyzes the difference between the actual sound effect characteristic and the optimal sound effect characteristic;
according to the difference, the main controller (1) compensates the actual sound effect characteristic to obtain a target sound effect characteristic close to the optimal sound effect characteristic.
3. The automatic vehicle sound effect adjustment system according to claim 2, wherein: the sound effect acquisition device (3) is a microphone.
4. The automatic vehicle sound effect adjustment system according to claim 2, further comprising:
a switching unit (5) connected to the main controller (1) to trigger the analysis operation of the calculation unit (4).
5. A vehicle, characterized in that: the vehicle is loaded with the automatic vehicle sound effect adjusting system as claimed in any one of claims 2 to 4.
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| CN110789471A (en) * | 2019-10-18 | 2020-02-14 | 中国第一汽车股份有限公司 | Vehicle-mounted music adjusting system and vehicle-mounted music adjusting method |
| CN110996242B (en) * | 2019-12-13 | 2021-03-02 | 科大讯飞(苏州)科技有限公司 | Tuning method, related device and readable storage medium |
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