CN-119012072-B - Self-adaptive equalizer compensation method of vehicle-mounted sound equipment

Abstract

The invention belongs to the field of equalizer compensation, in particular to a self-adaptive equalizer compensation method of a vehicle-mounted sound, which aims at solving the problem that the existing noise generated in the running process of a vehicle is inconvenient to carry out effective self-adaptive gain compensation, thereby influencing the listening effect of personnel in the vehicle, and provides the following scheme that the method comprises the following steps: S1, preparing a compensation system, wherein the compensation system comprises a noise monitoring module and a multimedia audio acquisition module, the noise monitoring module is connected with the noise acquisition module, the noise acquisition module is connected with a frequency spectrum analysis module, the frequency spectrum analysis module is connected with a model building module, the model building module is connected with a database module, and the multimedia audio acquisition module is connected with a loudness monitoring module.

Inventors

• LI XITANG

Assignees

• 广东声力电子科技有限公司

Dates

Publication Date

20260512

Application Date

20240816

Claims (8)

1. 1. The adaptive equalizer compensation method of the vehicle-mounted sound equipment is characterized by comprising the following steps of: The method comprises the following steps that S1, a compensation system is prepared, the compensation system comprises a noise monitoring module and a multimedia audio acquisition module, the noise monitoring module is connected with a noise acquisition module, the noise acquisition module is connected with a frequency spectrum analysis module, the frequency spectrum analysis module is connected with a model building module, the model building module is connected with a database module, the multimedia audio acquisition module is connected with a loudness monitoring module, the loudness monitoring module is connected with a classification module, the classification module is connected with a vibration monitoring module and a processing analysis module, the classification module is connected with the frequency spectrum analysis module, the processing analysis module is connected with the database module, the processing analysis module is connected with a control module and a compensation degree setting module, the compensation degree setting module is connected with a compensation degree selection module, the compensation degree selection module is connected with the control module, the control module is connected with an automatic compensation module, the automatic compensation module is connected with a low-pass filter module, an equalizer module and a high-pass filter module, the low-pass filter module, the equalizer module and the high-pass filter module are connected with the same loudspeaker module, and the loudspeaker module is connected with a test analysis module; S2, acquiring in-vehicle multimedia sound and noise through a multimedia audio acquisition module and a noise acquisition module, analyzing the in-vehicle multimedia sound and noise through a loudness monitoring module and a frequency spectrum analysis module, classifying the sound signals through a classification module, and simultaneously establishing a corresponding compensation model according to in-vehicle noise data through a model establishment module and storing the corresponding compensation model into a database module; S3, extracting multimedia sound and noise in the vehicle through a processing analysis module, transmitting the multimedia sound and the noise to a level calculation unit, calculating a high-low sound level by the level calculation unit according to the spectral characteristics of the extracted audio signals, automatically matching a compensation model in a database module according to the loudness level, and transmitting a production control instruction to a control module; And S4, finally, controlling the automatic compensation module to carry out self-adaptive gain compensation on the audio through the control module, carrying out filtering processing on the compensated audio through the low-pass filter module, the equalizer module and the high-pass filter module, and then transmitting an audio signal subjected to automatic compensation to the loudspeaker module for playing.
2. 2. The adaptive equalizer compensation method of a car audio according to claim 1, wherein the processing analysis module comprises an extraction unit, a level calculation unit and a matching unit, the extraction unit is connected with the level calculation unit, and the level calculation unit is connected with the matching unit.
3. 3. The adaptive equalizer compensation method of a car audio according to claim 2, wherein the noise monitoring module comprises a vehicle speed monitoring unit, a wind noise monitoring unit, a tire noise monitoring unit and an air conditioner wind speed monitoring unit, the vehicle speed monitoring unit is connected with the wind noise monitoring unit, the wind noise monitoring unit is connected with the tire noise monitoring unit, and the tire noise monitoring unit is connected with the air conditioner wind speed monitoring unit.
4. 4. A method of compensating an adaptive equalizer for a vehicle audio system as claimed in claim 3, wherein the automatic compensation module comprises a compensation receiving unit, a loudness compensation unit, and a reconstruction unit, the compensation receiving unit being connected to the loudness compensation unit, and the loudness compensation unit being connected to the reconstruction unit.
5. 5. The adaptive equalizer compensation method of a car audio according to claim 4, wherein the vibration monitoring module comprises a vibration sensor unit, an acceleration sensor unit, and an information transmission unit, the vibration sensor unit is connected to the acceleration sensor unit, and the acceleration sensor unit is connected to the information transmission unit.
6. 6. The adaptive equalizer compensation method of claim 5, wherein the processing analysis module is configured to extract spectral characteristics of an audio signal, calculate a high-low sound level by a level calculation unit, and then configure a corresponding loudness gain compensation level according to a current playing volume.
7. 7. The method for compensating an adaptive equalizer of a vehicle audio system according to claim 6, wherein the multimedia audio acquisition module and the noise acquisition module are configured to acquire audio signals of multimedia sounds, driving speeds, wind noise, tire noise and air-conditioning wind speed in a vehicle, and transmit acquired data to the classification module for classification processing.
8. 8. The adaptive equalizer compensation method of claim 7, wherein the model building module is configured to build a corresponding compensation model according to the collected audio signal data, and transmit the compensation model to the database module for storage.

Description

Self-adaptive equalizer compensation method of vehicle-mounted sound equipment Technical Field The invention relates to the technical field of equalizer compensation, in particular to a self-adaptive equalizer compensation method of a vehicle-mounted sound. Background Currently, existing car audio is classified into two types, analog speakers and digital speakers. On the one hand, the traditional analog loudspeaker has the problems of high system power consumption, easiness in superposition of other interference signals and poor anti-interference capability, and is less in use. On the other hand, the all-digital loudspeaker is driven by digital signals, and the processes of digital-to-analog conversion, amplification, filtering and the like are not needed, so that the all-digital loudspeaker has the characteristics of smaller volume and power consumption and stronger anti-interference capability. For the products of all-digital speakers, how to make the products have the characteristic of high reduction degree of the traditional analog speakers is a hot research field. Currently, there are only a few vehicle audio processing products on the market that are developed specifically for all digital speakers. In the prior art, effective adaptive gain compensation is inconvenient for noise generated in the running process of a vehicle, so that the listening effect of personnel in the vehicle is affected. Disclosure of Invention The invention aims to solve the defect that the noise generated in the running process of a vehicle is inconvenient to carry out effective self-adaptive gain compensation in the prior art, so that the listening effect of personnel in the vehicle is affected. In order to achieve the above purpose, the present invention adopts the following technical scheme: an adaptive equalizer compensation method of a vehicle-mounted sound comprises the following steps: The method comprises the following steps that S1, a compensation system is prepared, the compensation system comprises a noise monitoring module and a multimedia audio acquisition module, the noise monitoring module is connected with a noise acquisition module, the noise acquisition module is connected with a frequency spectrum analysis module, the frequency spectrum analysis module is connected with a model building module, the model building module is connected with a database module, the multimedia audio acquisition module is connected with a loudness monitoring module, the loudness monitoring module is connected with a classification module, the classification module is connected with a vibration detection module and a processing analysis module, the classification module is connected with the frequency spectrum analysis module, the processing analysis module is connected with the database module, the processing analysis module is connected with a control module and a compensation degree setting module, the compensation degree setting module is connected with a compensation degree selection module, the compensation degree selection module is connected with the control module, the control module is connected with an automatic compensation module, the automatic compensation module is connected with a low-pass filter module, an equalizer module and a high-pass filter module, the low-pass filter module, the equalizer module and the high-pass filter module are connected with the same loudspeaker module, and the loudspeaker module is connected with a test analysis module; S2, acquiring in-vehicle multimedia sound and noise through a multimedia audio acquisition module and a noise acquisition module, analyzing the in-vehicle multimedia sound and noise through a loudness monitoring module and a frequency spectrum analysis module, classifying the sound signals through a classification module, and simultaneously establishing a corresponding compensation model according to in-vehicle noise data through a model establishment module and storing the corresponding compensation model into a database module; S3, extracting multimedia sound and noise in the vehicle through a processing analysis module, transmitting the multimedia sound and the noise to a level calculation unit, calculating a high-low sound level by the level calculation unit according to the spectral characteristics of the extracted audio signals, automatically matching a compensation model in a database module according to the loudness level, and transmitting a production control instruction to a control module; And S4, finally, controlling the automatic compensation module to carry out self-adaptive gain compensation on the audio through the control module, carrying out filtering processing on the compensated audio through the low-pass filter module, the equalizer module and the high-pass filter module, and then transmitting an audio signal subjected to automatic compensation to the loudspeaker module for playing. Preferably, the noise monitoring module comprises a vehicle speed monit