CN115315051A - Method and system for controlling light change through sound - Google Patents

Method and system for controlling light change through sound Download PDF

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CN115315051A
CN115315051A CN202210813607.6A CN202210813607A CN115315051A CN 115315051 A CN115315051 A CN 115315051A CN 202210813607 A CN202210813607 A CN 202210813607A CN 115315051 A CN115315051 A CN 115315051A
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color
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叶奇峰
刘冬
徐卫洪
蔡天晨
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Zhejiang Eboy High Tech Technology Co ltd
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
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    • H05B47/105—Controlling the light source in response to determined parameters
    • H05B47/115—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings
    • H05B47/12—Controlling the light source in response to determined parameters by determining the presence or movement of objects or living beings by detecting audible sound
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    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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    • H05B47/10—Controlling the light source
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    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
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    • H05B47/165—Controlling the light source following a pre-assigned programmed sequence; Logic control [LC]
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Abstract

The application provides a method and a system for controlling light change through sound, which belong to the field of intelligent light control and comprise the following steps: collecting sound signals, and carrying out operational amplification and volume control processing to obtain output signals; converting the output signal from a time domain to a frequency domain according to a fast Fourier transform algorithm to obtain first information data; calculating the output signal and the first information data by adopting a time domain and/or frequency domain processing mode to obtain second information data; analyzing and processing reduction factors of the color information according to the output signal and the first information data, substituting the obtained reduction coefficient into a preset light color modulation formula for calculation, and obtaining third information data; and controlling the on-off, brightness and color of the light according to the second information data and the third information data. The color matched with the display light can be endowed with the display light adaptively according to the music style and the audio information; and a proper light display is provided through a display control strategy, so that better experience is provided for a user.

Description

Method and system for controlling light change through sound
Technical Field
The invention belongs to the field of intelligent light control, and particularly relates to a method and a system for controlling light change through sound.
Background
With the technological progress and the improvement of living standard, the demand of people for quality life is increasingly rising. People find that the light can provide the lighting function, and can also play a role in creating atmosphere by adjusting the color, the brightness and the like of the light. Since various lighting systems aiming at rendering scene atmosphere appear in the market, originally simple lighting light begins to become colorful and gorgeous. Among various atmosphere lighting technologies, there is an atmosphere lighting technology called light music rhythm, which has a very important influence on creating an atmosphere and improving quality of life of people. The lighting system using such lighting technology usually has regular changes, including brightness changes, color changes, etc., with the changes of background music.
There is disclosed a musical note display system (patent application No. cn201910845112. X) comprising: the rhythm control device monitors the sound volume of the loudspeaker device and outputs a control command to the vehicle-mounted display device to adjust the display brightness; when the loudspeaker device plays sound, the rhythm control device monitors the sound frequency of the loudspeaker device and outputs a control command to the vehicle-mounted display device to adjust the display color.
Still disclose a vehicle-mounted music rhythm atmosphere lamp circuit (patent application number is CN 202011292584.6), it includes power supply circuit, light sense detection circuit, constant voltage circuit, luminescent circuit, sound detection circuit, power supply circuit exports regulated voltage after the constant voltage circuit steady voltage and gives luminescent circuit, sound detection circuit power supply, light sense detection circuit controls through the change that detects outside light signal the break-make of constant voltage circuit, luminescent circuit includes drive circuit and emitting diode LED1, sound detection circuit controls through the change that detects outside sound signal drive circuit's break-make to make emitting diode LED1 be on and off with the rhythm along with the change of outside sound.
Above-mentioned two kinds of current schemes are all gathered sound earlier then carry out analysis processes and control light again, realize the linkage of sound and light, all be promptly through establishing middle control unit, realize the linkage of sound to light change, but there are delay nature and inaccuracy in this kind of mode, and the linear change of light is unnatural, and saturation and bright-colored inadequately, and the flexibility is poor and the mistake appears easily.
Disclosure of Invention
The application provides a method and a system for controlling light change through sound, and aims to solve the problems that the linkage of the sound and the light change is poor in ductility and matching performance, unnatural in linear change, insufficient in saturation and insufficient in bright-colored light display and the like.
In order to achieve the purpose, the invention adopts the following technical scheme that:
collecting sound signals, and carrying out operational amplification and volume control processing on the sound signals to obtain output signals;
converting the output signal from a time domain to a frequency domain according to a fast Fourier transform algorithm to obtain first information data;
calculating the output signal and the first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
analyzing and processing reduction factors of the color information according to the output signal and the first information data to obtain reduction coefficients, substituting the reduction coefficients into a preset light color modulation formula for calculation to obtain third information data, wherein the reduction factors comprise sound audio signals, melody and visual curves;
and controlling the on-off, brightness and color of the light according to the second information data and the third information data.
Preferably, the converting the output signal from the time domain to the frequency domain according to the fast fourier transform algorithm to obtain the first information data includes:
analyzing the frequency spectrum of the sound according to the output signal to obtain first analysis data; or
And analyzing the curvy rotation law according to the output signal, and calculating a color reduction coefficient to obtain second analysis data.
Preferably, the converting the output signal from the time domain to the frequency domain according to the fast fourier transform algorithm to obtain the first information data further includes:
analyzing the frequency spectrum of the sound according to the output signal and increasing the gain of the auditory response curve to obtain third analysis data A' n = An S = { An = } 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m Where An = { An = } 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m Is the auditory loudness curve gain.
Preferably, analyzing and processing the reduction factor of the color information according to the output signal and the first information data to obtain a reduction coefficient, substituting the reduction coefficient into a preset light color modulation formula for calculation to obtain third information data, including:
calculating a reduction coefficient of the color information according to the output signal and the first information data and the audio signal to obtain a first coefficient including
Figure BDA0003740242630000031
Figure BDA0003740242630000032
Where Rn is the red light information, gn is the green light information, bn is the blue light information, M R And M G The sequence numbers of the highest spectral bands corresponding to red light and green light, respectively, wherein An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain is;
calculating a reduction coefficient of the color information according to the output signal and the first information data and through the melody of the song to obtain a second coefficient Cn = { C R n,C G n,C B n}＝g(yn)；
According to the output signal and the first information data, the color information is subjected to reduction coefficient calculation through a visual curve, and a third coefficient Vn = { V = is obtained R n,V G n,V B n}；
Respectively substituting the first coefficient, the second coefficient and the third coefficient into a formula
Figure BDA0003740242630000033
Figure BDA0003740242630000041
Figure BDA0003740242630000042
And calculating, and summarizing to obtain third information data, wherein R% is the proportion of the red light output, G% is the proportion of the green light output, and B% is the proportion of the blue light output.
Preferably, the controlling the lighting, brightness and color according to the second information data and the third information data includes:
passing through a formula according to the second information data
Figure BDA0003740242630000043
Performing lighting adjustment, wherein C B n (t) is the brightness of the lamp light at the acquisition point n, C B nmax is the maximum light display brightness of the acquisition point n, and delta T is the time interval of the light rising to the maximum value; or
Passing through a formula according to the second information data
Figure BDA0003740242630000044
Dimming the lamp, wherein the beta e (1, infinity);
adjusting the light color according to the third information data and controlling the display refreshing frequency and the color switching state;
the light on/off, brightness and color of the light are adjusted and the light is displayed in a point-like or linear or planar manner.
A system for voice controlling light changes, comprising:
the sound collection module: the device is used for collecting sound signals, and carrying out operational amplification and volume control processing on the sound signals to obtain output signals;
an audio decoding module: the device is used for converting the time domain to the frequency domain of the output signal according to a fast Fourier transform algorithm to obtain first information data;
a rhythm calculation module: the device is used for calculating the output signal and the first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
a color calculation module: the system comprises a color information processing module, a light color modulation module and a display module, wherein the color information processing module is used for analyzing and processing reduction factors of the color information according to an output signal and first information data to obtain a reduction coefficient, substituting the reduction coefficient into a preset light color modulation formula for calculation to obtain third information data, and the reduction factors comprise a sound audio signal, a melody and a visual curve;
the light display module: and the controller is used for controlling the on-off, brightness and color of the light according to the second information data and the third information data.
Preferably, the audio decoding module includes:
the audio first processing module: the system comprises a sound processing unit, a frequency spectrum analysis unit and a data processing unit, wherein the sound processing unit is used for analyzing the frequency spectrum of sound according to an output signal to obtain first analysis data; or
The audio second processing module: and the color reduction module is used for analyzing the curvy rotation law according to the output signal, calculating a color reduction coefficient and obtaining second analysis data.
Preferably, the audio decoding module further includes:
the audio third processing module: for analyzing the frequency spectrum of the sound according to the output signal and increasing the auditory response curve gain to obtain third analysis data A' n = An S = { An = 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m Where An = { An = } 1 ，an 2 ，......，an m = FFT (yn) is the frequency domain analysis data of the sound, where yn is a parameter of the output signal,S＝{S 1 ，S 2 ，......，S m is the auditory loudness curve gain.
Preferably, the color calculation module includes:
the sound audio restoring coefficient calculating module: calculating a reduction coefficient of the color information according to the output signal and the first information data and the sound audio signal to obtain a first coefficient including
Figure BDA0003740242630000051
Where Rn is red light information, gn is green light information, bn is blue light information, M R And M G The sequence numbers of the highest spectral bins corresponding to red and green light, respectively, where An = { An = { (a) } 1 ，an 2 ，......，an m = FFT (yn) is the frequency domain analysis data of the sound, where yn is a parameter of the output signal and S = { S = 1 ，S 2 ，......，S m The auditory loudness curve gain is;
the curvy rotation law reduction coefficient calculation module: the color information is subjected to coefficient reduction calculation through a melody according to the output signal and the first information data to obtain a second coefficient Cn = { C = R n,C G n,C B n}＝g(yn)；
The visual curve reduction coefficient calculation module: the coefficient reduction unit is used for calculating a reduction coefficient of color information according to the output signal and the first information data and through a visual curve to obtain a third coefficient Vn = { V = R n,V G n,V B n}；
The three primary color light flux calculation module: for substituting the first coefficient, the second coefficient and the third coefficient into the formula
Figure BDA0003740242630000061
Figure BDA0003740242630000062
Figure BDA0003740242630000063
The third information is obtained by calculation and summarizationAnd data, wherein R% is the proportion of the output of red light, G% is the proportion of the output of green light, and B% is the proportion of the output of blue light.
Preferably, the light display module includes:
the light brightness adjusting module: for passing through a formula based on the second information data
Figure BDA0003740242630000064
Performing lighting adjustment, wherein B n (t) is the brightness of the lamp light at the acquisition point n, C B n max is the maximum lamplight display brightness of the acquisition point n, and delta T is the time interval of the lamplight rising to the maximum value; or
A light dimming adjustment module: for passing through a formula based on the second information data
Figure BDA0003740242630000071
Dimming the lamp, wherein the beta e (1, infinity);
light color adjustment module: the lamp light color adjusting device is used for adjusting the lamp light color according to the third information data and controlling the display refreshing frequency and the color switching state;
the light processing display module: the device is used for adjusting the on-off, brightness and color of the light and displaying the light in a point-like or linear or planar manner.
The invention has the following beneficial effects:
according to the scheme, a certain corresponding relation exists between the expression of the audio frequency transmission recognized by human ears and the visible red, green and blue colors in the existing research, the connection between the sound and the color change is directly established, and the rhythm calculation is assisted, so that the sound can be used as a variable to directly control the corresponding color change, the control of an intermediate module is not needed, the reaction speed is increased, the time-delay property is avoided, the change of the light can be more accurate, and the color calculation is added, so that the change of the light color is more natural and more saturated;
the real-time and accurate rhythm capturing and responding can be carried out on the sounds with different volumes in a self-adaptive manner; the color of the light matched with the music can be given according to the music style and the audio in a self-adaptive manner; by providing a suitable light display control strategy based on human eye characteristics, a better experience is provided for the user.
Drawings
FIG. 1 is a flow chart of a method for controlling light variation by sound according to the present invention
FIG. 2 is a schematic diagram of the implementation process of the scheme in the invention
FIG. 3 is a graph of auditory loudness in the present invention
FIG. 4 is a graph of visual loudness in accordance with the present invention
FIG. 5 is a schematic diagram of a system for controlling light variation by sound according to the present invention
FIG. 6 is a schematic diagram of an audio decoding module 20 according to the present invention
FIG. 7 is a schematic diagram of a color calculation module 40 according to the present invention
FIG. 8 is a schematic view of a light display module 50 according to the present invention
Detailed Description
Example 1
As shown in fig. 1, a method for controlling light variation by sound includes the following steps:
s11, collecting a sound signal, and carrying out operational amplification and volume control processing on the sound signal to obtain an output signal;
s12, converting the output signal from a time domain to a frequency domain according to a fast Fourier transform algorithm to obtain first information data;
s13, calculating the output signal and the first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
s14, analyzing and processing reduction factors of the color information according to the output signal and the first information data to obtain reduction coefficients, substituting the reduction coefficients into a preset light color modulation formula to calculate to obtain third information data, wherein the reduction factors comprise sound and audio signals, melody and visual curves;
and S15, controlling the on-off, brightness and color of the light according to the second information data and the third information data.
In this embodiment, as shown in fig. 2, the overall process of implementing the scheme includes first converting a sound vibration signal into a voltage signal through a sound pickup and operational amplifier module, and performing filtering and operational amplification processing on the voltage signal; the data conversion module processes and converts the operational amplifier output signal and provides proper and rapidly-processed data and data formats for the back end; the volume control module judges the output data of the operational amplifier in real time, and adjusts the output data of the operational amplifier by adjusting the gain of the pickup module or the operational amplifier so that the operational amplifier operates in a proper working area range capable of effectively identifying rhythm information;
wherein, the pickup part is usually a sound collecting device and component such as a microphone, a silicon microphone or a microphone; the operational amplifier part is generally a device and a component with a signal amplification function, such as an operational amplifier, a triode and the like; the data conversion module mainly performs primary operation of data ADC acquisition and data acquisition, and reasonable data format conversion, such as polarity conversion, nonlinear processing, data lossless/low-loss compression, noise reduction and the like; according to the research, the identification resolution of the human ear to the sound pressure is nonlinear under the condition of different volumes, and the audio data can be transformed in order to reduce the data storage capacity, accelerate the operation and reduce the power consumption, and preferably, the data nonlinear processing can be carried out in a logarithmic mode; under the condition that system resources are enough or part of information is allowed to be appropriately lost and part of performance is reduced, the data can be directly transferred to a back end for use without the data conversion, namely the data is not converted by a data conversion module;
the volume control module is mainly used for realizing the self-adaption to the volume by monitoring the output data of the operational amplifier in real time, judging through signals and adjusting the gain of the pickup or operational amplifier module in time;
after the processing of the scheme, data which can restore the sound source and meet the requirement of back-end operation is output, and the data is output signals.
Through the processing of the collected sound signals, regardless of the type and volume of an external sound source collected by the sound pick-up, and various sound effect environments such as sound effect relief, clue or rhythm change speed and the like, data information conforming to the back-end rhythm calculation and color calculation can be output, and the effectiveness of color control display is improved.
Then, by using DFT, FFT, etc. (for simplicity of explanation, the time-frequency domain conversion is collectively represented by FFT), the output signal of the sound collection module is converted from the time domain to the frequency domain, and audio information is output:
by the spectral analysis of the sound, frequency domain analysis data, which is first analysis data:
where An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal;
in order to more truly restore the human hearing, the frequency spectrum can be cut and analyzed by adopting a mode like Mel triangular sampling and the like;
to more intuitively express the normalized loudness of each spectrum to the human ear hearing, the loudness can be normalized by increasing the hearing response curve gain:
A′n＝An*S＝{an 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m }，
wherein S = { S = { S = 1 ，S 2 ，......，S m The acoustic loudness curve gain is obtained by analyzing in fig. 3; the analysis data after the gain of the corresponding curve of the auditory sense is added is the third analysis data; when the hearing loudness curve gain is not increased, the scheme can also be realized, and after the gain is increased, the effect of the scheme can be better.
The information such as tone, melody and the like of the sound can be acquired by processing time domain and frequency spectrum analysis data, and the information is used for restoring the color of the emotion expressed by the sound; the data obtained in the mode, namely the second analysis data, is summarized from the first analysis data, the second analysis data and the third analysis data to obtain first information data processed by the audio analysis module;
in order to ensure the effectiveness of data output, reduce data storage capacity and improve calculation efficiency, the data can be transformed, and the system efficiency is optimized.
Through frequency spectrum analysis, signal processing of time-frequency domain and analysis of information such as music style and melody, sound characteristic information such as music rhythm and melody is restored, and environmental atmosphere adaptive to music expression emotion is reproduced in a light form to create high-quality light atmosphere.
After the first information data processed by the audio analysis module is obtained, the sound rhythm is calculated, the capture of the music rhythm can be obtained by performing certain operation on the sound acquisition and processing signals (namely the output signal directly output by the sound acquisition module and the first information data processed by the audio analysis module), and can be realized by adopting an information processing mode of time domain, frequency domain and time domain-frequency domain fusion, as follows:
the method for capturing the sound rhythm under the condition of the time domain comprises the following steps:
the change of the sound acquisition signal yn exceeds a judgment threshold; optimally, for different characteristic sound signals, such as a sound signal which continuously and stably fluctuates, a fluctuating sound signal which continuously and stably rises, a fluctuating sound signal which continuously and stably falls and the like, the accuracy of rhythm collection can be improved in a mode of dynamically adjusting a judgment threshold value; optimally, the background noise of the system can be judged, and the influence of the background noise on the rhythm is reduced; in this way, first rhythm data is obtained;
grabbing the sampling rhythm in a frequency domain mode, such as:
after weighted averaging is carried out on each decomposed frequency domain signal in the first information data, the signals can be restored to time domain signals to carry out rhythm information acquisition; loudness curve gain compensation can be optimally added to the frequency domain information of each decomposition; preferably, the rhythm collection can also be carried out by integrating sound frequency spectrum information into n frequency domain information points by combining frequency spectrum decomposition, increasing sound loudness curve coefficients and the like; in this way, second rhythm data is obtained;
optimally, the rhythm grabbing can also be carried out in a mode of fusing a time domain and a frequency domain.
In summary, the rhythm data obtained by the time domain, the frequency domain, or the fusion of the time domain and the frequency domain are summarized to obtain the second information data.
A color calculation module: the atmosphere environment created by sound information such as timbre, music, melody and the like is analyzed, processed and color mapped through time domain and frequency domain information (namely, output signals of the sound acquisition module and first information data processed by the audio analysis module) acquired and processed by sound, and a display control signal capable of realizing bright and saturated lamplight color is provided.
According to the existing research information: a certain corresponding relation exists between the emotion expression transmitted by the voice audio signal which can be identified by the human ear and the red, green and blue colors which can be seen visually; the melody and the melody of music can transmit emotional information such as joy, sorrow and the like more vividly; namely, corresponding relation exists between the emotion expression transmitted by the sound and the three primary colors visible visually, and the emotion expression transmitted by the emotion expression can be restored through the corresponding three primary colors by analyzing the sound information.
Therefore, in the specific implementation, the emotion information transmitted by the sound can be realized through the following data processing, so that better experience is brought to a user through the reduction of light rhythm and color, and the specific implementation is as follows:
restoration of color information by acoustic audio signals:
Figure BDA0003740242630000121
where Rn is red light information, gn is green light information, bn is blue light information, M R And M G The serial numbers of the highest frequency spectrum segments corresponding to the red light and the green light respectively;
the reduction coefficient is a first coefficient;
and through the analysis of the information such as the music and the melody, the color information is restored, and the restoration coefficients are as follows:
Cn＝{C R n,C G n,C B n } = g (yn), which is the second coefficient;
considering the visual curve as shown in fig. 4, the visual response is normalized, and the reduction coefficients are as follows:
Vn＝{V R n,V G n,V B n, the coefficient is a third coefficient;
after the reduction factors such as sound audio signals, melody, visual curves and the like are considered, the data proportion of the output luminous flux of the R/G/B lamp light can be normalized as follows:
Figure BDA0003740242630000122
Figure BDA0003740242630000123
Figure BDA0003740242630000124
wherein R% is the proportion of red light output, G% is the proportion of green light output, and B% is the proportion of blue light output;
substituting the first coefficient, the second coefficient and the third coefficient into the formula respectively to calculate, so as to obtain the corresponding light output ratio of three primary colors (red, green and blue), summarizing the calculation results to obtain color data corresponding to sound, wherein the data is third information data, and the three formulas are collectively called as light color modulation formulas.
In practical applications, the above information can be simplified for convenient calculation, such as:
ignoring the visual curve effect;
partial non-linear processing can be carried out on the R%, G% and B% data, the dominant color parameter or two parameters with larger proportion are artificially increased, and the parameters of other colors are reduced, so that the color saturation is improved; or preferably reduced to a few colors of higher saturation, adapted according to the parameters.
In addition, under the condition of a special sound source, one or a few of lamplight display colors can be continuously presented according to the method, the richness of audio display information can be improved through the modes of scaling of a frequency domain window, shifting of a frequency domain analysis range and the like, and the vividness and richness of the lamplight colors are ensured.
In a simpler and more convenient case, the calculation and analysis of the colors can be replaced by a color built-in system, and a good visual display effect can be obtained.
After a series of calculation processing is carried out according to the collected sound signals, second information data containing rhythm information and third information data containing color information are obtained, and lighting, brightness and color display of the lamp light can be controlled according to the two data.
According to the scheme, the connection between the sound and the color change is directly established according to the corresponding relation between the emotion expression of auditory recognition and the red, green and blue colors visible by vision in the existing research, rhythm calculation is assisted, the sound can directly control the light to perform rhythmic lighting and dimming and brightness and color change, the control through an intermediate module is not needed, the time delay is reduced, the light change can be more accurate, the light color change is more natural and saturated, and better user experience is brought.
Example 2
The specific scheme for controlling the light according to the calculated rhythm data and color data is as follows:
the light display module realizes the control of light display driving according to the signals provided by the rhythm calculation module and the color calculation module, and mainly shows that the display unit is provided with drive control signals with rhythmic light on and off, brightness and color display; the specific implementation form is as follows:
display of a single light source: the light on/off, the brightness and the color can be controlled;
displaying of the linear multi-control light source: the lighting control system can control the lighting, brightness and color of the light, and can also control the linear movement of the light;
displaying of the planar multi-control light source: the lighting control system can control the lighting, brightness and color of the light and control the linear movement of the light; patterns and angles can be displayed on the light.
The human eyes have automatic light adjusting capability, so that the lamp can adapt to wide living environment. Specifically, for example, when the light is actually displayed and controlled, the influence of the factors on the vision needs to be comprehensively considered, and the higher-quality light visual effect presentation is provided, such as adaptive adjustment of the light brightness, response to different spectral frequencies (colors), and certain visual residuals of quantized signal acquisition. Essentially by adjusting:
a. and (3) adjusting the brightness of the lamp light: preferably, the lamplight is gradually lightened and gradually extinguished;
the light becomes brighter, with reference to the following relationship:
Figure BDA0003740242630000141
wherein, C B n (t) is the brightness of the lamp light at the acquisition point n, C B n max is the maximum light display brightness of the acquisition point n, and delta T is the time interval of the light rising to the maximum value; the light fades out, with reference to the following relationship:
Figure BDA0003740242630000142
wherein, beta belongs to (1, infinity);
wherein the content of the first and second substances,
Figure BDA0003740242630000143
imax is the maximum brightness of the light, y peak As the maximum value which can be output by sound collection, a belongs to (0, 1);
b. and displaying the color of the light: the color calculation module outputs signals which are processed by the light display unit and then are displayed on the display unit; in order to avoid visual superposition and distortion caused by rapid color switching, the refresh frequency and color switching state of color display need to be controlled. The color switching mode:
according to scientific research, human eyes can keep visual persistence about 0.1-0.4 s after the image disappears, so that the interval period of dozens of milliseconds to hundreds of milliseconds is selected for data refreshing.
Normally, the light follows the newly collected second data information (rhythm point)Line color switching; under the condition that the rhythm is collected quickly, the light may still be in a high brightness state when the next rhythm is collected, and preferably, the current display color is still maintained in a short period; however, if the output with higher brightness is continued in a longer period of time, the color of the light is forcibly switched. That is, the condition for the light color switching is Rn =1, and C D(n-1) (t0+Δt)＜C D_limitL (ii) a Or Rn =1 and the color display has been maintained for more than N refresh cycles, at which time the refreshed color is the processed value of the color acquired at the latest rhythm or the color of m previous unrefreshed cycles; otherwise, the color remains unchanged.
c. The display mode is as follows:
the color display of a single light source is characterized by 1-N light source points, but if the brightness or the color of 1 light source point is changed, all other light source points are correspondingly changed in brightness or color. Specifically, the brightness or the color of the light source is changed, and the display mode refers to the description of a) lamplight brightness adjustment and b) lamplight color display;
the display of linear multi-control light source is characterized by that it is formed from 1-MxN light source points, in which M is line number and N is column number; as long as the brightness and the color of 1 light source point in a certain row are changed, the brightness or the color of other lamp beads in the M-1 row at corresponding positions are correspondingly changed; but each 1 light source on N columns can be individually controlled for brightness and/or color. The display of this type of linear multi-control light source is realized by the following way:
specifically, the length change displays two states of ambient length expansion and contraction, which can be respectively realized through formulas
Figure BDA0003740242630000151
Preferably, the above-described 1 st mode of linear expansion is adopted; length contraction of light
Figure BDA0003740242630000152
Wherein β ∈ (1, ∞), the aforementioned 1 st linear contraction mode is preferably adopted.
Figure BDA0003740242630000161
Lmax is the maximum length of the light that can be displayed, y peak The maximum value which can be output by sound collection is a epsilon (0, 1).
Specifically, in the aspect of displaying the light brightness, a brightness display mode of first-segment maximum brightness, middle-segment maximum brightness and tail-end light brightness gradually going out can be optimally adopted, and the tail-end brightness gradually going out can refer to a calculation formula of light fading.
Specifically, in the aspect of lighting color display, optimally, uniform color, color segmentation, or color segmentation gradual change mode can be adopted for implementation.
By the mode, rapid change along with instantaneous change of the volume can be seen, the display length under the condition of the whole volume can be displayed, and the whole display effect of the light is improved. In addition, the display can be displayed in a linear way in a multi-section combined way in the same direction, the opposite direction or back to back.
Displaying of the planar multi-control light source: the brightness and the brightness can be changed, and the change in the horizontal/vertical direction can be adopted; on the basis of the linear display, the effects of plane direction rotation, display spot size, color transition, light guiding at different angles and the like can be increased, and the description is omitted here.
In summary, for digital systems, analog to digital conversion is required. This implementation is a general technique and will not be described here.
Example 3
As shown in fig. 5, a system for sound-controlling light variation includes:
the sound collection module 10: the device is used for collecting sound signals, and carrying out operational amplification and volume control processing on the sound signals to obtain output signals;
the audio decoding module 20: the device is used for converting the time domain to the frequency domain of the output signal according to a fast Fourier transform algorithm to obtain first information data;
the tempo calculation module 30: the device comprises a first information processing module, a second information processing module and a processing module, wherein the first information processing module is used for calculating an output signal and first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
the color calculation module 40: the system comprises a color information processing module, a light color modulation module and a display module, wherein the color information processing module is used for analyzing and processing reduction factors of the color information according to an output signal and first information data to obtain a reduction coefficient, substituting the reduction coefficient into a preset light color modulation formula for calculation to obtain third information data, and the reduction factors comprise a sound audio signal, a melody and a visual curve;
the light display module 50: and the controller is used for controlling the on-off, brightness and color of the light according to the second information data and the third information data.
One embodiment of the above system is that, in the sound collection module 10, a sound signal is collected, the sound signal is subjected to operational amplification and volume control processing to obtain an output signal, in the audio decoding module 20, the output signal is subjected to time domain to frequency domain conversion according to a fast fourier transform algorithm to obtain first information data, in the rhythm calculation module 30, the output signal and the first information data are calculated by adopting a time domain and/or frequency domain information processing mode to obtain second information data, in the color calculation module 40, a reduction factor of color information is analyzed and processed according to the output signal and the first information data to obtain a reduction coefficient, the reduction coefficient is substituted into a preset light color modulation formula to calculate to obtain third information data, the reduction factor includes a sound audio signal, a melody and a visual curve, and in the light display module 50, the on/off, brightness and color of light are controlled according to the second information data and the third information data.
Example 4
As shown in fig. 6, the audio decoding module 20 includes:
the audio first processing module 21: the system comprises a sound processing unit, a frequency spectrum analysis unit and a data processing unit, wherein the sound processing unit is used for analyzing the frequency spectrum of sound according to an output signal to obtain first analysis data; or
The audio second processing module 22: the system comprises a sensor, a data processing module and a data processing module, wherein the sensor is used for acquiring output signals of a sensor, and the data processing module is used for analyzing a curvy rotation law according to the output signals and calculating a color reduction coefficient to obtain second analysis data;
the audio third processing module 23: for analysing the frequency spectrum of a sound from an output signal and increasing the auditory response profileLine gain to obtain third analysis data A' n = An × S = { An = 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m Where An = { An = } 1 ，an 2 ，......，an m = FFT (yn) is the frequency domain analysis data of the sound, where yn is a parameter of the output signal and S = { S = 1 ，S 2 ，......，S m The auditory loudness curve gain.
In one embodiment of the foregoing module, in the audio first processing module 21, the frequency spectrum of the sound is analyzed according to the output signal to obtain first analysis data; or in the audio second processing module 22, the melody is analyzed according to the output signal, the color reduction coefficient is calculated, and second analysis data is obtained, and in the audio third processing module 23, the sound spectrum is analyzed according to the output signal and the auditory response curve gain is increased, and third analysis data a' n = An S = { An = is obtained 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m Where An = { An = } 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain.
Example 5
As shown in fig. 7, the color calculation module 40 includes:
the sound audio reproduction coefficient calculation module 41: calculating a reduction coefficient of the color information according to the output signal and the first information data and the sound audio signal to obtain a first coefficient including
Figure BDA0003740242630000181
Where Rn is red light information, gn is green light information, bn is blue light information, M R And M G The sequence numbers of the highest spectral bins corresponding to red and green light, respectively, where An = { An = { (a) } 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain is;
the curvy rotation law reduction coefficient calculation module 42: the color information is restored according to the output signal and the first information data through the melody to obtain a second coefficient Cn = { C R n,C G n,C B n}＝g(yn)；
Visual curve reduction coefficient calculation module 43: the method is used for calculating a reduction coefficient of color information according to the output signal and the first information data through a visual curve to obtain a third coefficient Vn = { V = R n,V G n,V B n}；
Three primary color light flux calculation module 44: for substituting the first coefficient, the second coefficient and the third coefficient into the formula
Figure BDA0003740242630000191
Figure BDA0003740242630000192
Figure BDA0003740242630000193
And calculating, and summarizing to obtain third information data, wherein R% is the proportion of red light output, G% is the proportion of green light output, and B% is the proportion of blue light output.
In one embodiment of the foregoing module, in the audio frequency restoration coefficient calculation module 41, a first coefficient is obtained by calculating a restoration coefficient of the color information according to the audio frequency signal and the output signal and the first information data, where the first coefficient includes
Figure BDA0003740242630000194
Figure BDA0003740242630000195
Where Rn is red light information, gn is green light information, bn is blue light information, M R And M G The sequence numbers of the highest spectral bands corresponding to red light and green light, respectively, wherein An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The coefficient is the auditory loudness curve gain, and in the melody reduction coefficient calculation module 42, the color information is subjected to coefficient reduction calculation through the melody according to the output signal and the first information data, so that a second coefficient Cn = { C is obtained R n,C G n,C B n } = g (yn), in the visual curve reduction coefficient calculation module 43, the color information is subjected to reduction coefficient calculation through the visual curve according to the output signal and the first information data, and a third coefficient Vn = { V) } is obtained R n,V G n,V B n, in the three primary color light flux calculation module 44, the first coefficient, the second coefficient and the third coefficient are respectively substituted into the formula
Figure BDA0003740242630000196
Figure BDA0003740242630000201
Figure BDA0003740242630000202
And calculating, and summarizing to obtain third information data, wherein R% is the proportion of the red light output, G% is the proportion of the green light output, and B% is the proportion of the blue light output.
Example 6
As shown in fig. 8, the light display module 50 includes:
the lamp lighting adjustment module 51: for passing through a formula based on the second information data
Figure BDA0003740242630000203
Performing lighting adjustment, wherein B n (t) is the brightness of the lamp light at the acquisition point n, C B n max is the maximum lamplight display brightness of the acquisition point n, and delta T is the time interval of the lamplight rising to the maximum value; or
Light dimming adjustment module 52: for passing through a formula based on the second information data
Figure BDA0003740242630000204
Dimming the lamp, wherein the beta epsilon (1, infinity);
the light color adjusting module 53: the device is used for adjusting the light color according to the third information data and controlling the display refreshing frequency and the color switching state;
the light processing display module 54: the device is used for adjusting the on-off, brightness and color of the lamp light and displaying the lamp light in a point-shaped or linear or planar mode.
One embodiment of the above module is that in the light brightening adjustment module 51, the second information data is processed by formula
Figure BDA0003740242630000205
Performing lighting adjustment, wherein B n (t) is the brightness of the lamp light at the acquisition point n, C B n max is the maximum light display brightness of the acquisition point n, and delta T is the time interval of the light rising to the maximum value; or in dimming module 52, by formula based on the second information data
Figure BDA0003740242630000211
And (3) carrying out lamplight dimming adjustment, wherein the lamplight color adjusting module 53 adjusts the lamplight color by controlling the display refreshing frequency and the color switching state according to the third information data, and the lamplight processing display module 54 adjusts the on-off of the lamplight, the brightness and the color and carries out lamplight display in a point-like or linear or planar mode.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.

Claims (10)

1. A method for voice controlling a light change, comprising:
collecting sound signals, and carrying out operational amplification and volume control processing on the sound signals to obtain output signals;
converting the output signal from a time domain to a frequency domain according to a fast Fourier transform algorithm to obtain first information data;
calculating the output signal and the first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
analyzing and processing reduction factors of the color information according to the output signal and the first information data to obtain reduction coefficients, substituting the reduction coefficients into a preset light color modulation formula for calculation to obtain third information data, wherein the reduction factors comprise sound audio signals, melody and visual curves;
and controlling the on-off, brightness and color of the light according to the second information data and the third information data.
2. The method of claim 1, wherein the converting the output signal from the time domain to the frequency domain according to the fast fourier transform algorithm to obtain the first information data comprises:
analyzing the frequency spectrum of the sound according to the output signal to obtain first analysis data; or
And analyzing the curvy rotation law according to the output signal, and calculating a color reduction coefficient to obtain second analysis data.
3. The method of claim 2, wherein the converting of the output signal from the time domain to the frequency domain according to the fast fourier transform algorithm to obtain the first information data, further comprises:
analyzing the frequency spectrum of the sound according to the output signal and increasing the gain of the auditory response curve to obtain third analysis data A' n = An = { An = { (An) } 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m Where An = { An = } 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m Is the auditory loudness curve gain.
4. The method of claim 1, wherein analyzing and processing reduction factors of color information according to the output signal and the first information data to obtain a reduction coefficient, and substituting the reduction coefficient into a preset light color modulation formula to calculate to obtain third information data, comprises:
calculating a reduction coefficient of the color information according to the output signal and the first information data and the audio signal to obtain a first coefficient including
Figure FDA0003740242620000021
Figure FDA0003740242620000022
Where Rn is the red light information, gn is the green light information, bn is the blue light information, M R And M G The sequence numbers of the highest spectral bands corresponding to red light and green light, respectively, wherein An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain is;
calculating a reduction coefficient of the color information according to the output signal and the first information data and through the melody of the song to obtain a second coefficient Cn = { C R n,C G n,C B n}＝g(yn)；
According to the output signal and the first information data, the color information is subjected to reduction coefficient calculation through a visual curve, and a third coefficient Vn = { V } is obtained R n,V G n,V B n}；
Respectively substituting the first coefficient, the second coefficient and the third coefficient into a formula
Figure FDA0003740242620000023
Figure FDA0003740242620000024
Figure FDA0003740242620000025
And calculating, and summarizing to obtain third information data, wherein R% is the proportion of red light output, G% is the proportion of green light output, and B% is the proportion of blue light output.
5. The method of claim 1, wherein the controlling of the lighting, brightness and color of the light according to the second information data and the third information data comprises:
passing through a formula according to the second information data
Figure FDA0003740242620000031
Performing lighting adjustment, wherein C B n (t) is the brightness of the lamp light at the acquisition point n, C B nmax is the maximum lamplight display brightness of the acquisition point n, and delta T is the time interval of the lamplight rising to the maximum value; or
Passing through a formula according to the second information data
Figure FDA0003740242620000032
Dimming the lamp, wherein the beta e (1, infinity);
adjusting the light color according to the third information data and controlling the display refreshing frequency and the color switching state;
the light on/off, brightness and color of the light are adjusted and the light is displayed in a point-like or linear or planar manner.
6. A system for voice-controlled light change, for implementing a method of voice-controlled light change according to claim 1, comprising:
the sound collection module: the device is used for collecting sound signals, and carrying out operational amplification and volume control processing on the sound signals to obtain output signals;
an audio decoding module: the device is used for converting the time domain to the frequency domain of the output signal according to a fast Fourier transform algorithm to obtain first information data;
a rhythm calculation module: the device comprises a first information processing module, a second information processing module and a processing module, wherein the first information processing module is used for calculating an output signal and first information data by adopting a time domain and/or frequency domain information processing mode to obtain second information data;
a color calculation module: the system comprises a color information processing module, a light color modulation module and a display module, wherein the color information processing module is used for analyzing and processing reduction factors of the color information according to an output signal and first information data to obtain a reduction coefficient, substituting the reduction coefficient into a preset light color modulation formula for calculation to obtain third information data, and the reduction factors comprise a sound audio signal, a melody and a visual curve;
the light display module: and the controller is used for controlling the on-off, brightness and color of the light according to the second information data and the third information data.
7. The system of claim 6, wherein the audio decoding module comprises:
the audio first processing module: the system comprises a sound source, a frequency spectrum analysis module and a data processing module, wherein the sound source is used for generating an output signal; or
The audio second processing module: and the color reduction module is used for analyzing the curvy rotation law according to the output signal, calculating a color reduction coefficient and obtaining second analysis data.
8. The system of claim 7, wherein the audio decoding module further comprises:
the audio third processing module: for analyzing the frequency spectrum of the sound according to the output signal and increasing the auditory response curve gain to obtain third analysis data A' n = An S = { An = 1 ·S 1 ，an 2 ·S 2 ，......，an m ·S m }, where An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain.
9. The system of claim 6, wherein the color calculation module comprises:
the sound audio restoration coefficient calculation module: calculating a coefficient for restoring color information according to the output signal and the first information data and the audio signal to obtain a first coefficient including
Figure FDA0003740242620000041
Where Rn is red light information, gn is green light information, bn is blue light information, M R And M G The sequence numbers of the highest spectral bands corresponding to red light and green light, respectively, wherein An = { An = 1 ，an 2 ，......，an m } = FFT (yn) is frequency domain analysis data of sound, where yn is a parameter of the output signal, S = { S = { S } 1 ，S 2 ，......，S m The auditory loudness curve gain is;
the curvy rotation law reduction coefficient calculation module: the color information is subjected to coefficient reduction calculation through a melody according to the output signal and the first information data to obtain a second coefficient Cn = { C = R n,C G n,C B n}＝g(yn)；
The visual curve reduction coefficient calculation module: the coefficient reduction unit is used for calculating a reduction coefficient of color information according to the output signal and the first information data and through a visual curve to obtain a third coefficient Vn = { V = R n,V G n,V B n}；
The three primary color light flux calculation module: for substituting the first coefficient, the second coefficient and the third coefficient into a formula
Figure FDA0003740242620000051
Figure FDA0003740242620000052
Figure FDA0003740242620000053
And calculating, and summarizing to obtain third information data, wherein R% is the proportion of red light output, G% is the proportion of green light output, and B% is the proportion of blue light output.
10. A system for voice-controlled lighting changes as claimed in claim 6, wherein the lighting display module comprises:
the light brightness adjusting module: for passing through a formula based on the second information data
Figure FDA0003740242620000054
Performing lighting adjustment, wherein B n (t) is the brightness of the lamp light at the acquisition point n, C B nmax is the maximum light display brightness of the acquisition point n, and delta T is the time interval of the light rising to the maximum value; or
A light dimming adjustment module: for passing through a formula based on the second information data
Figure FDA0003740242620000055
Dimming the lamp, wherein the beta epsilon (1, infinity);
light color adjustment module: the device is used for adjusting the light color according to the third information data and controlling the display refreshing frequency and the color switching state;
the light processing and displaying module: the device is used for adjusting the on-off, brightness and color of the lamp light and displaying the lamp light in a point-shaped or linear or planar mode.
CN202210813607.6A 2022-07-11 2022-07-11 Method and system for controlling light change through sound Pending CN115315051A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115767854A (en) * 2022-11-16 2023-03-07 延锋国际汽车技术有限公司 Acousto-optic synchronous linkage method and acousto-optic synchronous linkage system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115767854A (en) * 2022-11-16 2023-03-07 延锋国际汽车技术有限公司 Acousto-optic synchronous linkage method and acousto-optic synchronous linkage system
WO2024104413A1 (en) * 2022-11-16 2024-05-23 延锋国际汽车技术有限公司 Acousto-optic synchronous linkage method and acousto-optic synchronous linkage system

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