CN111332197B - Light control method and device of vehicle-mounted entertainment system and vehicle-mounted entertainment system - Google Patents
Light control method and device of vehicle-mounted entertainment system and vehicle-mounted entertainment system Download PDFInfo
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- 230000005236 sound signal Effects 0.000 claims abstract description 106
- 238000005070 sampling Methods 0.000 claims abstract description 44
- 238000012545 processing Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 6
- 230000004397 blinking Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000036651 mood Effects 0.000 description 2
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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
- B60Q3/00—Arrangement of lighting devices for vehicle interiors; Lighting devices specially adapted for vehicle interiors
- B60Q3/80—Circuits; Control arrangements
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Abstract
The invention provides a light control method and device of a vehicle-mounted entertainment system and the vehicle-mounted entertainment system. The light control method of the vehicle-mounted entertainment system comprises the steps of obtaining audio signals in a vehicle; sampling the audio signal according to a preset time interval to obtain sampling data; extracting audio features of the sampled data, wherein the audio features comprise amplitude and/or frequency of the audio signal; and controlling the light of the atmosphere lamp according to the audio frequency characteristics. The audio signal is sampled to obtain the sampled data, so that the processing amount of the audio data is reduced, and the processing efficiency of the audio data is improved. And moreover, by extracting the audio features of the sampling data and controlling the light of the atmosphere lamp according to the audio features, the light of the atmosphere lamp is changed along with the change of the audio features of the audio signals, a good KTV atmosphere is created, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of light control, in particular to a light control method and device of a vehicle-mounted entertainment system and the vehicle-mounted entertainment system.
Background
At present, automobiles are vehicles commonly used by people. With the development of automobiles, users have made higher demands on the vehicle-mounted entertainment systems of automobiles, for example, users can utilize the good closed environment of automobiles to pass through the vehicle-mounted entertainment system Karaoke in automobiles. However, the vehicle-mounted entertainment system cannot control the change of the light of the atmosphere lamp in the vehicle along with the change of the audio signal in the vehicle, cannot create a good KTV atmosphere, and reduces user experience.
Disclosure of Invention
In view of the above, the present invention has been made to provide a light control method and apparatus for an in-vehicle entertainment system, and an in-vehicle entertainment system, which overcome or at least partially solve the above problems.
An object of the present invention is to provide a light control method for a vehicle-mounted entertainment system, which creates a good KTV atmosphere by controlling light of an atmosphere lamp according to audio characteristics so that the light of the atmosphere lamp changes with changes in the audio characteristics.
Particularly, the invention provides a light control method of a vehicle-mounted entertainment system, which comprises the following steps:
acquiring an audio signal in the vehicle; sampling the audio signal according to a preset time interval to obtain sampling data; extracting audio features of the sampled data, wherein the audio features comprise amplitude and/or frequency of the audio signal; and controlling the light of the atmosphere lamp according to the audio frequency characteristics.
Optionally, when the audio feature includes an amplitude of the audio signal, if the audio signal is a non-monaural audio signal, the sampling the audio signal according to a preset time interval to obtain sampling data includes: sampling the audio data of each sound channel according to a preset time interval to obtain sampling data; the extracting the audio features of the sample data comprises: extracting an amplitude of the sampled data; and calculating the average value of the amplitudes of the sampled data at the same sampling time point of all the channels, and taking the calculated average value of the amplitudes of the sampled data as the audio characteristic of the audio signal.
Optionally, when the audio feature comprises an amplitude and a frequency of the audio signal, the extracting the audio feature of the sampled data comprises: dividing each sampling data into sub-sampling data of at least one frequency band according to a preset frequency range; extracting the amplitude of the sub-sampling data of each frequency band; and taking the amplitude of the sub-sampling data and the frequency of the frequency band corresponding to the amplitude as the audio characteristic of the audio signal.
Optionally, the audio signal in the vehicle comprises one of: a sound signal emitted by a user picked up by a microphone; background music of the in-vehicle entertainment system; the sound mixing signal is a sound mixing signal obtained by mixing a sound signal sent by a user and background music of the vehicle-mounted entertainment system, wherein the sound signal is picked up by a microphone.
Optionally, controlling the light of the atmosphere light according to the audio feature comprises: controlling the flickering frequency of the atmosphere lamp according to the frequency of the audio signal; and/or controlling the brightness of the atmosphere lamp according to the amplitude of the audio signal.
According to another aspect of the present invention, there is also provided a light control apparatus of an in-vehicle entertainment system, comprising: and the control module comprises a memory and a processor, wherein a control program is stored in the memory, and the control program is used for realizing the light control method of the vehicle-mounted entertainment system in any one embodiment when being executed by the processor.
According to another aspect of the invention, a vehicle-mounted entertainment system is also provided, which comprises the light control device of the vehicle-mounted entertainment system.
According to the invention, the audio features of the audio signal are extracted, and the light of the atmosphere lamp is controlled according to the audio features, so that the light of the atmosphere lamp changes along with the change of the audio features of the audio signal, a good KTV atmosphere is created, and the user experience is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a light control method for an in-vehicle entertainment system according to an embodiment of the present invention;
fig. 2 is a light control apparatus of an in-vehicle entertainment system according to another embodiment of the present invention.
Detailed Description
Fig. 1 is a flowchart of a light control method of an in-vehicle entertainment system according to an embodiment of the present invention. Referring to fig. 1, a light control method of an in-vehicle entertainment system may include the steps of:
step S101: an audio signal within the vehicle is obtained.
Step S103: sampling is carried out on the audio signal according to a preset time interval to obtain sampling data.
Step S105: audio features of the sampled data are extracted. Wherein the audio characteristic comprises an amplitude and/or a frequency of the audio signal.
Step S107: and controlling the light of the atmosphere lamp according to the audio frequency characteristics.
In the embodiment of the light control method of the vehicle-mounted entertainment system, the vehicle-mounted entertainment system can be an Android platform-based vehicle-mounted entertainment system. The audio characteristic may include an amplitude and/or a frequency of the audio signal. Of course, the audio features may also include a wavelength, a beat, a tone, and the like of the audio signal, which is not specifically limited in the embodiment of the present invention. The preset time interval for sampling the audio signal may be set to 50ms, with 10ms of data sampled every 50 ms. The preset time interval and the time length of each sampling can be adjusted according to actual conditions, and the embodiment of the invention is not specifically limited to this. After sampling, the amplitude and/or frequency of the audio signal can be extracted through the audio chip, and the extraction of the amplitude and/or frequency of the audio signal belongs to the prior art known by those skilled in the art, and is not described herein again. Of course, other ways may also be adopted to extract the amplitude and/or frequency of the audio signal, which is not specifically limited in this embodiment of the present invention. Sampling is carried out on the audio signals according to the preset time interval to obtain sampling data, so that the processing amount of the audio signals can be reduced, and the processing efficiency of the audio signals is improved. And moreover, by extracting the audio features of the audio signals and controlling the light of the atmosphere lamp according to the audio features, the light of the atmosphere lamp is changed along with the change of the audio features of the audio signals, a good KTV atmosphere can be created, and the user experience is improved.
In one embodiment of the invention, the audio signal in the vehicle may comprise one of:
first audio signal: a sound signal emitted by the user is picked up by a microphone.
Second audio signal: background music for in-vehicle entertainment systems.
Third audio signal: the sound mixing signal is a sound mixing signal obtained by mixing a sound signal sent by a user and background music of the vehicle-mounted entertainment system, wherein the sound signal is picked up by a microphone.
In this embodiment, when the audio signal in the vehicle is of the first type, the microphone picks up the sound signal emitted by the user, and transmits the picked-up sound signal at a specific frequency modulation frequency. The specific frequency modulation frequency can comprise other frequency modulation frequencies except 87.5-108 MHz, such as 85MHz frequency modulation frequency. The picked sound signal is sent out at a specific frequency modulation frequency, so that the frequency range of the sound signal is prevented from being overlapped with the frequency range of radio frequency modulation broadcasting of the car machine, and the interference of the audio signal is reduced. Then, the wireless microphone can be connected through the radio module to receive the sound signal picked up by the microphone. The connection between the microphone and the radio module adopts silent processing, so that the operation of a user can be reduced. The radio module transmits the sound signal picked up by the microphone to a Digital Signal Processor (DSP) of the in-vehicle entertainment system. The sound signal emitted by the user may then be obtained from the digital signal processor of the in-vehicle entertainment system. Of course, the method for receiving the sound signal picked up by the microphone in the embodiment of the present invention is not particularly limited, and other methods known to those skilled in the art may be used to receive the sound signal picked up by the microphone.
When the audio signal in the car is of the second type, the user can obtain the song file selected by the user after selecting the song through the KTV singing APP. The obtained song file is generally a file in a compressed format, and the compressed format is generally in a format such as MP3, aac (advanced Audio coding), wma (windows Media Audio) and the like. And then, decoding the acquired song file in the compressed format, and controlling the decoded song file to play.
When the audio signal in the car is the third kind, the user can acquire the song file selected by the user after selecting the song through the KTV singing APP of the vehicle-mounted entertainment system, and the acquired song file is controlled to be played, wherein the process of controlling the playing of the song file can be the same as the control process of the second kind, and the process is not repeated here. The singing APP can trigger the microphone to be in communication connection with a radio module of the vehicle-mounted entertainment system, and the microphone and the radio module are matched under the frequency of 85 HZ. The connection between the microphone and the radio module adopts silent processing, so that the operation of a user can be reduced. If the communication connection fails, the singing APP interface can pop up a prompt box to prompt a user whether a microphone switch is turned on or not. When the communication connection is successful, the microphone sends out the picked-up sound signal at a specific frequency modulation frequency. The specific frequency modulation frequency can comprise other frequency modulation frequencies except 87.5-108 MHz, such as 85MHz frequency modulation frequency. The picked sound signal is sent out at a specific frequency modulation frequency, so that the frequency range of the sound signal is prevented from being overlapped with the frequency range of radio frequency modulation broadcasting of the car machine, and the interference of the audio signal is reduced. The radio module sends the received sound signal to a digital signal processor of the vehicle-mounted entertainment system. The digital signal processor can also acquire the background music and perform sound mixing processing on the background music and the received sound signal to obtain a sound mixing signal. The mix signal may then be obtained from a digital signal processor of the in-vehicle entertainment system.
In the process of acquiring any one of the sound signals, the playing of other entertainment applications of the vehicle-mounted entertainment system can be suspended. When the sound signal acquisition is finished, other entertainment applications can be enabled to continue playing. This way, interference from other entertainment applications can be avoided and noise reduced.
In addition, in some other embodiments, the waveform of the audio signal being played may also be displayed graphically. For example, a user turns on a microphone and sing an APP song through a KTV of an in-vehicle entertainment system. The singing APP can trigger the microphone to be in communication connection with the radio module. The connection between the microphone and the radio module adopts silent processing, so that the operation of a user can be reduced. If the communication connection fails, the singing APP interface can pop up a prompt box to prompt a user whether a microphone switch is turned on or not. And when the communication connection is successful, the song file selected by the user can be acquired. The obtained song file is generally a file in a compressed format, and the compressed format may be in a format such as MP3, aac (advanced Audio coding), or wma (windows Media Audio). And then, decoding the received song file in the compressed format, and playing the decoded song file. The decoded song file may be in a non-compressed pcm (pulse Code modulation) format. When a song file is played, a unique identification ID (Session ID) is created to identify the currently played audio signal, the KTV singing APP tracks and manages the currently played audio signal through the identification ID, and then waveform display is performed in a graphical mode through display equipment such as a display screen. Of course, the background music output by the in-vehicle entertainment system and the sound signal picked up by the microphone and emitted by the user may be mixed and synthesized and stored in the hard disk of the in-vehicle entertainment system. After the user sings, the file synthesized by the mixed sound can be played back, and the scoring unit of the vehicle-mounted entertainment system can be connected to score the songs sung by the user, so that the user experience is enhanced.
In an embodiment of the invention, when the audio characteristic includes an amplitude of the audio signal, if the audio signal is a non-mono audio signal, step S103 may include sampling the audio data of each channel according to a predetermined time interval to obtain sampled data. Step S105 may include the steps of: first, the amplitude of the sampled data is extracted. Then, an average value of amplitudes of the sample data at the same sampling time point of all channels is calculated, and the calculated average value of the amplitudes of the sample data is used as an audio feature of the audio signal.
In this embodiment, when the audio signal is a non-monaural audio signal, the average value of the amplitudes of the sampled data at the same sampling time point in all channels is calculated, and the calculated average value of the amplitudes of the sampled data is used as the audio feature of the audio signal, so that the accuracy of obtaining the amplitudes can be improved, and the light of the atmosphere lamp can be controlled more accurately according to the amplitudes.
In one embodiment of the present invention, when the audio characteristic includes an amplitude and a frequency of the audio signal, the step S105 may include the steps of:
firstly, each sampling data is divided into sub-sampling data of at least one frequency band according to a preset frequency range. Then, the amplitude of the sub-sampled data for each frequency band is extracted, and the amplitude of the sub-sampled data and the frequency of the frequency band corresponding to the amplitude are used as the audio features of the audio signal.
In the present embodiment, for example, the preset time interval of sampling may be set to 50ms, 10ms of data is sampled every 50ms, and when the frequency of the audio signal is 44.1kHz, the 10ms of sampled data corresponds to 441 sampling points. And then, dividing each sampling data into sub-sampling data of at least one frequency band according to a preset frequency range. Each sub-sampled data may be divided into 10 frequency bands of sub-sampled data by frequency range. The frequency range of the sub-sampling data of the 10 frequency bands can be 20-100 Hz, 100-300 Hz, 300-500 Hz, 500-800 Hz, 800-1000 Hz, 1-2 kHz, 2-5 kHz, 5 Hz-10 kHz, 10-15 kHz and 15-20 kHz from low to high in sequence. Of course, the frequency range and the predetermined time interval of each sub-sampled data are only illustrative and do not limit the present invention. Then, the amplitude of the sub-sampled data of each frequency band may be extracted, and the amplitude of the sub-sampled data and the frequency of the frequency band corresponding to the amplitude may be used as the audio feature of the audio signal. By carrying out sectional processing on the sampling data according to the frequency range, the frequency of the sampling data can be further refined and counted, and the light of the atmosphere lamp can be more accurately controlled according to the frequency. And, through the segmentation processing, select some representative frequency bands (for example, the above-mentioned 10 frequency bands), can already guarantee the accuracy of obtaining the frequency, can also further reduce the handling capacity of the audio data, raise the audio frequency and process the efficiency. In this embodiment, the amplitude of the sub-sampled data of each frequency band may be an average value of the amplitudes of the frequency bands. As will be appreciated by those skilled in the art, the average of the amplitudes for each frequency band is the average of the amplitudes for all periods within that frequency band.
In an embodiment of the present invention, step S107 may be implemented by:
the flickering frequency of the atmosphere lamp is controlled in dependence on the frequency of the audio signal. For example, the frequency of blinking of the mood light will be higher when the frequency is higher. The brightness of the atmosphere lamp is controlled in dependence on the amplitude of the audio signal. For example, the brightness of the atmosphere lamp may be stronger when the amplitude is larger. Of course, the above control method is not limited to the present invention, and the brightness of the atmosphere lamp may be made weaker as the amplitude is larger. The lighting of the atmosphere lamp is controlled according to the frequency and the amplitude, and the adjustment can be made according to the actual needs of users.
The above embodiments can be combined arbitrarily, and according to any one of the above preferred embodiments or a combination of multiple preferred embodiments, the embodiments of the present invention can achieve the following beneficial effects:
the flicker frequency and the brightness of the atmosphere lamp are controlled according to the amplitude and the frequency of the audio signal, so that the light of the atmosphere lamp changes along with the change of the audio signal, a good KTV atmosphere is created, and the user experience is improved. And moreover, the acquired audio signals in the vehicle are sampled, so that the workload of the processed audio signals can be reduced, and the processing efficiency of the audio signals is improved.
Referring to fig. 2, based on the same concept, an embodiment of the invention further provides a light control device of an in-vehicle entertainment system, and the light control device 100 of the in-vehicle entertainment system may include a control module 104. The control module 104 may further include a memory 106 and a processor 108, where the memory 106 stores a control program, and the control program is executed by the processor 108 to implement the light control method of the in-vehicle entertainment system according to any one of the above embodiments. After the control module 104 obtains the audio characteristics of the audio signal, the brightness and amplitude of the interior mood light can be controlled according to the obtained audio characteristics. For example, under the control of the control module 104, the blinking frequency of the ambience lamp may be higher as the frequency is higher, and the brightness of the ambience lamp may be higher as the amplitude is larger.
Based on the same concept, the embodiment of the invention also provides a vehicle-mounted entertainment system, and the vehicle-mounted entertainment system can comprise the light control device 100 of the vehicle-mounted entertainment system of the embodiment.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (6)
1. A light control method for a vehicle-mounted entertainment system, comprising:
acquiring an audio signal in the vehicle;
sampling the audio signal according to a preset time interval to obtain sampling data;
extracting audio features of the sampled data, wherein the audio features comprise amplitude and/or frequency of the audio signal;
sending out an audio signal at a specific frequency modulation frequency, and controlling the light of the atmosphere lamp according to the audio characteristic, wherein the specific frequency modulation frequency comprises other frequency modulation frequencies except 87.5-108 MHz;
wherein, when the audio feature comprises an amplitude and a frequency of the audio signal, the extracting the audio feature of the sample data comprises:
dividing each sampling data into sub-sampling data of at least one frequency band according to a preset frequency range;
extracting the amplitude of the sub-sampling data of each frequency band;
and taking the amplitude of the sub-sampling data and the frequency of the frequency band corresponding to the amplitude as the audio characteristic of the audio signal.
2. Light control method of a vehicle entertainment system according to claim 1,
when the audio feature includes an amplitude of the audio signal, if the audio signal is a non-monaural audio signal, the sampling the audio signal at a preset time interval to obtain sampling data includes: sampling the audio data of each sound channel according to a preset time interval to obtain sampling data;
the extracting the audio features of the sample data comprises:
extracting an amplitude of the sampled data;
and calculating the average value of the amplitudes of the sampled data at the same sampling time point of all the channels, and taking the calculated average value of the amplitudes of the sampled data as the audio characteristic of the audio signal.
3. A light control method for a vehicle entertainment system according to claim 1, wherein the audio signal in the vehicle comprises one of:
a sound signal emitted by a user picked up by a microphone;
background music of the in-vehicle entertainment system;
the sound mixing signal is a sound mixing signal obtained by mixing a sound signal sent by a user and background music of the vehicle-mounted entertainment system, wherein the sound signal is picked up by a microphone.
4. The light control method of the in-vehicle entertainment system according to claim 1, wherein controlling the light of the atmosphere lamp according to the audio feature comprises:
controlling the flickering frequency of the atmosphere lamp according to the frequency of the audio signal; and/or
And controlling the brightness of the atmosphere lamp according to the amplitude of the audio signal.
5. A light control device for a vehicle entertainment system, comprising:
a control module comprising a memory and a processor, the memory having stored therein a control program, the control program when executed by the processor being for implementing a light control method of an in-vehicle entertainment system according to any of claims 1-4.
6. An in-vehicle entertainment system characterized by comprising the light control device of the in-vehicle entertainment system according to claim 5.
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| CN112026699A (en) * | 2020-08-28 | 2020-12-04 | 博泰车联网(南京)有限公司 | Obstacle warning method, vehicle-mounted terminal and computer-readable storage medium |
| CN112911774B (en) * | 2021-01-18 | 2022-08-26 | 浙江智马达智能科技有限公司 | Atmosphere lamp control method and device, electronic equipment and storage medium |
| CN113050915B (en) * | 2021-03-31 | 2023-12-26 | 联想(北京)有限公司 | Electronic equipment and processing method |
| CN113177135A (en) * | 2021-04-30 | 2021-07-27 | 广州酷狗计算机科技有限公司 | Method and device for playing audio by vehicle-mounted equipment, storage medium and electronic equipment |
| CN113225879B (en) * | 2021-05-10 | 2023-01-24 | 北京经纬恒润科技股份有限公司 | Vehicle-mounted interior lamp control method, atmosphere lamp controller and control system |
| CN113352986B (en) * | 2021-05-20 | 2023-01-06 | 浙江吉利控股集团有限公司 | Vehicle voice atmosphere lamp partition interaction control method and system |
| CN113450745A (en) * | 2021-06-30 | 2021-09-28 | 一汽奔腾轿车有限公司 | Immersive vehicle-mounted KTV point singing control method, system, terminal and storage medium |
| CN114715029A (en) * | 2022-04-29 | 2022-07-08 | 惠州市东翔电子科技有限公司 | System for separating Bluetooth signal and light control signal and vehicle control system |
| CN116489853B (en) * | 2023-06-26 | 2023-08-29 | 成都赛力斯科技有限公司 | Control method and device of automobile atmosphere lamp, vehicle-mounted information entertainment system and automobile |
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| FR3045915A1 (en) * | 2015-12-16 | 2017-06-23 | Orange | ADAPTIVE CHANNEL REDUCTION PROCESSING FOR ENCODING A MULTICANAL AUDIO SIGNAL |
| FR3056500B1 (en) * | 2016-09-28 | 2020-09-04 | Valeo Vision | INTERIOR LIGHTING SYSTEM FOR AUTONOMOUS MOTOR VEHICLES |
| CN108804667B (en) * | 2018-06-08 | 2021-11-02 | 百度在线网络技术（北京）有限公司 | Method and apparatus for presenting information |
| CN109287046B (en) * | 2018-09-30 | 2020-04-03 | 北京经纬恒润科技有限公司 | Atmosphere lamp control method, device and system |
| CN109910736A (en) * | 2019-04-03 | 2019-06-21 | 深圳创维汽车智能有限公司 | Automobile atmosphere lamp control method, device and storage medium |
| CN110418454A (en) * | 2019-06-10 | 2019-11-05 | 武汉格罗夫氢能汽车有限公司 | It is a kind of and interior in the associated automobile atmosphere lamp control method of broadcast frequency |
| CN209787421U (en) * | 2019-06-19 | 2019-12-13 | 湖北亿咖通科技有限公司 | vehicle-mounted entertainment system and vehicle |
| KR20190092332A (en) * | 2019-07-19 | 2019-08-07 | 엘지전자 주식회사 | Smart lighting and method for operating the same |
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Effective date of registration: 20220419 Address after: 430051 No. b1336, chuanggu startup area, taizihu cultural Digital Creative Industry Park, No. 18, Shenlong Avenue, Wuhan Economic and Technological Development Zone, Wuhan, Hubei Province Patentee after: Yikatong (Hubei) Technology Co.,Ltd. Address before: No.c101, chuanggu start up area, taizihu cultural Digital Industrial Park, No.18 Shenlong Avenue, Wuhan Economic Development Zone, Hubei Province Patentee before: HUBEI ECARX TECHNOLOGY Co.,Ltd. |