CN115520090A - Lighting information control method, device, storage medium and equipment - Google Patents

Abstract

The invention discloses a control method and a device of light information, wherein the method comprises the following steps: acquiring an audio signal with beat characteristics obtained by processing an original audio signal; recognizing music beats contained in the audio signal by using preset judgment conditions, and dividing the audio signal into a plurality of sections of audio beat signals according to the recognized music beats; setting a light control strategy suitable for the audio signal according to the change of the energy value corresponding to each section of audio beat signal and the marking position of the energy value; and responding to a light control instruction, controlling the light brightness to change along with the change of the corresponding energy value of the audio beat signal according to a light brightness control strategy, and controlling the marking position of the energy value of the light color in each section of the audio beat signal to switch according to a light color control measurement strategy. By the method, the control of the light information can be realized, and the problems of low light response and low music beat fitting degree in the control process of the existing light information are solved.

Description

Lighting information control method, device, storage medium and equipment

technical field

The present invention relates to the technical field of vehicles, in particular to a method and device for controlling lighting information.

Background technique

With the improvement of living standards, people have higher and higher requirements for the driving experience. Lighting atmospheres with fixed rhythms such as simple breathing or flowing water no longer meet market demand. Ambience lights that change with music rhythms become more in line with people's needs. The product.

The control methods for ambient light information are mainly brightness and color. The brightness and color response of the ambient light fit the music beat is an important criterion for judging the music rhythm ambient light. There are some music rhythm ambient light products on the market. It is to control the lighting information by performing spectrum analysis on the audio signal, such as short-time Fourier transform, and setting the mapping relationship between the ambient light and the spectrum. However, the application of this method requires high hardware requirements, which increases the product cost. Some ambient light products with music rhythm have high requirements on the sound source, and can only adapt to specific styles of music, making the response rhythm of the light changing with the music not obvious enough. , resulting in a poor fit between the light response and the music beat.

Contents of the invention

The present invention provides a method and device for controlling light information. By identifying the music beat in the audio signal and setting the light information according to the music beat, the color and brightness of the light can be switched according to the corresponding melody of the music, thereby solving the problem of It solves the problem that the response of the light and the rhythm of the music do not fit well in the control process of the existing light information. The specific technical scheme is as follows:

In a first aspect, an embodiment of the present invention provides a method for controlling lighting information, the method comprising:

Obtain a target audio signal with beat characteristics obtained after processing the original audio signal;

Identifying music beats contained in the target audio signal using preset determination conditions, and dividing the target audio signal into multiple audio beat signals according to the identified music beats;

According to the change of the corresponding energy value of each audio beat signal and the marked position of the energy value in each audio beat signal, generate a lighting control strategy suitable for the target audio signal, and the lighting control strategy includes a lighting brightness control strategy and a lighting color control Strategy;

In response to the light control instruction, control the light brightness according to the light brightness control strategy to change with the energy value corresponding to each segment of the audio beat signal, and control the light color according to the light color control strategy to control the energy value of each segment of the audio beat signal The position of the marker is switched.

In one embodiment, the acquisition of the target audio signal with beat characteristics obtained after the original audio signal is processed includes:

Use segmental continuous amplification to amplify the waveform feature points in the original audio signal to enhance the original audio signal;

Frequency segmentation is performed on the amplified original audio signal to obtain a target audio signal with beat characteristics.

In one embodiment, the stepwise continuous amplification method is used to amplify the waveform feature points in the original audio signal to enhance the original audio signal, including:

Determine the amplitude interval corresponding to the original audio signal, and divide the amplitude interval into a plurality of amplitude level intervals in the order of magnitude, the higher the amplitude level, the waveform characteristics of the original audio signal in the amplitude level interval The larger the amplitude corresponding to the point;

Set the amplitude amplification factor for the waveform feature points in the original audio signal in different amplitude level intervals, and use the amplitude amplification factor to amplify the waveform feature points in the original audio signal to enhance the amplitude of the original audio signal. The higher the amplitude level range, the smaller the amplitude amplification factor.

In one embodiment, the determination conditions include energy determination conditions and time determination conditions, and the predetermined determination conditions are used to identify the music beat contained in the target audio signal, and the The target audio signal is divided into multiple audio beat signals, including:

The time corresponding to the marked position of the energy value in the target audio signal is taken as the starting time, and the energy judgment condition is used to judge whether the accumulated signal energy in the preset sampling period reaches the set energy threshold, and the preset sampling period is after the starting time The selected set number of sampling periods;

When the accumulated signal energy in the preset sampling period reaches the set energy threshold, the time judgment condition is used to judge whether the time interval is greater than the set time threshold, and the time interval is formed by the initial moment and the current moment time difference;

In the case that the time interval is greater than the set time threshold, the audio signal corresponding to the starting moment and the current moment is intercepted from the target audio signal as the music beat contained in the target audio signal, and according to the music beat The target audio signal is divided into multiple segments of audio beat signals.

In one embodiment, before the time corresponding to the marked position of the energy value in the target audio signal is used as the starting time, the energy determination condition is used to determine whether the accumulated signal energy in the preset sampling period reaches the set energy threshold, The method also includes:

Determine the peak position and the valley position in the target audio signal according to the amplitude change in the adjacent sampling period in the target audio signal, and use the valley position as the mark position of the energy value in the target audio signal.

In one embodiment, the generation of a light control strategy suitable for the target audio signal according to the change of the energy value corresponding to each segment of the audio beat signal and the marking position of the energy value in each segment of the audio beat signal includes:

According to the change of the corresponding energy value of each audio beat signal, set the nonlinear corresponding relationship between the audio beat signal and the light brightness value, and generate a light brightness control strategy suitable for the target audio signal according to the nonlinear corresponding relationship;

When the target audio signal is executed to the marked position of the energy value in each audio beat signal, the color value is randomly selected from the light color table as the corresponding output light color of each music beat signal, and the light output corresponding to each music beat signal The color generates a light color degree control strategy suitable for the target audio signal.

In one embodiment, according to the change of the energy value corresponding to each audio beat signal, the nonlinear correspondence between the audio beat signal and the light brightness value is set, and the target audio signal is generated according to the nonlinear correspondence. Lighting brightness control strategy, including:

Divide multiple energy value intervals according to the change of energy value corresponding to each segment of audio beat signal;

Setting an upper limit of the brightness value for each energy value interval, and using the brightness upper limit value as a mapping boundary to perform light brightness mapping for each energy value interval, to obtain a non-linear correspondence between each audio beat signal and the light brightness value;

converting the non-linear correspondence between each segment of audio beat signal and the light brightness value into a light brightness curve corresponding to each segment of audio beat signal, combining the light brightness curve corresponding to each segment of audio signal to generate the target audio signal suitable Lighting brightness control strategy.

In the second aspect, an embodiment of the present invention provides a lighting information control device, the device comprising:

An acquisition unit, configured to acquire a target audio signal with beat characteristics obtained after the original audio signal is processed;

A division unit, configured to identify the music beat contained in the target audio signal using preset determination conditions, and divide the target audio signal into multiple audio beat signals according to the identified music beat;

A generation unit, configured to generate a lighting control strategy suitable for the target audio signal according to the change of the corresponding energy value of each audio beat signal and the marking position of the energy value in each audio beat signal, the lighting control strategy includes lighting brightness control strategy and light color control strategy;

The control unit is used to respond to the light control instruction, control the light brightness according to the light brightness control strategy to change with the change of the energy value corresponding to each audio beat signal, and control the light color in each audio segment according to the light color control strategy. The marker position of the energy value in the beat signal is switched.

In one embodiment, the acquisition unit includes:

The processing module is used to amplify the waveform feature points in the original audio signal by using segmented continuous amplification to enhance the original audio signal;

The segmentation module is configured to perform frequency segmentation on the amplified original audio signal to obtain a target audio signal with beat characteristics.

In one embodiment, the processing module is specifically configured to determine the amplitude interval corresponding to the original audio signal, and divide the amplitude interval into a plurality of amplitude level intervals in order of magnitude, and the amplitude The higher the level, the greater the amplitude corresponding to the waveform feature point in the original audio signal within the amplitude level interval;

The processing module is also specifically configured to set an amplitude amplification factor for the waveform feature points in the original audio signal in different amplitude level intervals, and use the amplitude amplification factor to amplify the waveform feature points in the original audio signal, so as to The amplitude of the original audio signal is enhanced, and the higher the amplitude level interval is, the smaller the amplitude amplification factor is.

In one embodiment, the determination conditions include energy determination conditions and time determination conditions, and the division unit includes:

The first judging module is used to use the time corresponding to the marked position of the energy value in the target audio signal as the starting time, and use the energy judging condition to judge whether the accumulated signal energy in the preset sampling period reaches the set energy threshold, the preset The sampling period is the set number of sampling periods selected after the initial moment;

The second judging module is used to judge whether the time interval is greater than the set time threshold using the time judging condition when the accumulated signal energy in the preset sampling period reaches the set energy threshold, and the time interval is at least The time difference between the initial moment and the current moment;

A division module, configured to intercept the audio signal corresponding to the start moment and the current moment from the target audio signal as the music beat contained in the target audio signal when the time interval is greater than the set time threshold, and The target audio signal is divided into a plurality of audio beat signals according to the music beat.

In one embodiment, the dividing unit further includes:

The determination module is used to use the energy determination condition to determine whether the accumulated signal energy in the preset sampling period reaches the set energy threshold at the time corresponding to the marked position of the energy value in the target audio signal as the starting time, according to the determined Amplitude changes in adjacent sampling periods in the target audio signal, determine peak positions and valley positions in the target audio signal, and use the valley positions as marker positions of energy values in the target audio signal.

In one embodiment, the generating unit includes:

The setting module is used to set the nonlinear corresponding relationship between the audio beat signal and the light brightness value according to the change of the corresponding energy value of each audio beat signal, and generate the light brightness suitable for the target audio signal according to the nonlinear corresponding relationship Control Strategy;

The selection module is used to randomly select the color value from the light color table as the light color corresponding to the output of each music beat signal when the target audio signal is executed to the mark position of the energy value in each audio beat signal, and according to each music beat The signal corresponds to the output light color to generate a light color degree control strategy suitable for the target audio signal. In one embodiment, the setting module is specifically configured to divide a plurality of energy value intervals according to changes in energy values corresponding to each segment of the audio beat signal;

The setting module is also specifically used to set the upper limit of the brightness value for each energy value interval, and use the brightness upper limit value as a mapping boundary to perform light brightness mapping on each energy value interval to obtain each segment of audio beat signal Non-linear correspondence with light brightness values;

The setting module is further configured to convert the non-linear correspondence between each segment of the audio beat signal and the light brightness value into a light brightness curve corresponding to each segment of the audio beat signal, combined with the light corresponding to each segment of the audio signal The brightness curve generates a lighting brightness control strategy suitable for the target audio signal.

In a third aspect, an embodiment of the present invention provides a storage medium, on which executable instructions are stored, and when the instructions are executed by a processor, the processor implements the method described in the first aspect.

In a fourth aspect, an embodiment of the present invention provides a lighting information control device, including:

one or more processors;

storage means for storing one or more programs,

Wherein, when the one or more programs are executed by the one or more processors, the one or more processors are made to implement the method described in the first aspect.

It can be seen from the above that the light information control method and device provided by the embodiments of the present invention, after obtaining the target audio signal with beat characteristics obtained after processing the original audio signal, use the preset determination conditions to identify the target audio signal that contains The music beat, and divide the target audio signal into multiple audio beat signals according to the recognized music beat, and further generate the target audio according to the change of the corresponding energy value of each audio beat signal and the marker position of the energy value in each audio beat signal The lighting control strategy suitable for the signal. The lighting strategy includes the lighting brightness control strategy and the lighting color control strategy. In response to the lighting control command, the lighting brightness is controlled according to the lighting brightness control strategy. The light color control strategy controls the light color to switch at the marked position of the energy value in each audio beat signal. It can be seen that, compared with the existing way of using frequency spectrum analysis audio signal to control light information, the embodiment of the present invention recognizes the music beat in the audio signal and sets the light information according to the music beat, so that the light can follow the The corresponding melody of the music changes to switch the color and brightness, thus solving the problem that the response of the light and the beat of the music do not fit well in the control process of the existing light information.

In addition, the technical effects that can also be achieved in this embodiment include:

According to the change of the corresponding energy value of each audio beat signal and the marking position of the energy value in each audio beat signal, a suitable lighting control strategy for the target audio signal can be generated, and the change of lighting information can be executed at the obvious beat point, which is consistent with the rhythm of the music. The synchronization is high, one of the beats includes the light color control strategy and the light brightness control strategy, which includes both color changes and brightness changes, and the two changes do not interfere with each other while following the music characteristics.

Of course, implementing any product or method of the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without creative effort.

FIG. 1 is a schematic flowchart of a lighting information control method provided by an embodiment of the present invention;

Fig. 2 is a schematic diagram of the non-linear correspondence between the audio beat signal and the light brightness value provided by the embodiment of the present invention;

Fig. 3 is a structural block diagram of the control process of lighting information provided by the embodiment of the present invention;

Fig. 4 is a logic block diagram of the control process of lighting information provided by the embodiment of the present invention;

Fig. 5 is a block diagram of a light information control device provided by an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that the terms "include" and "have" and any variations thereof in the embodiments of the present invention and the drawings are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally further includes For other steps or units inherent in these processes, methods, products or devices.

The present invention provides a control method and device for light information, which can identify the music beat in the audio signal, and set the light information according to the music beat, so that the light can switch the color and brightness according to the corresponding melody of the music change, so that Solve the problem that the light response and the music beat do not fit well in the control process of the existing light information. The light information control system of the embodiment of the present invention can be embedded in the electronic control unit mounted on the vehicle. The electronic control unit controls the light to change the light brightness and light color according to the beat in the audio signal according to the generated light control strategy, so that the light The response of the car fits the rhythm of the music to meet the needs of different groups of people and create a more comfortable riding atmosphere.

The embodiments of the present invention will be described in detail below.

Fig. 1 is a schematic flowchart of a method for controlling lighting information provided by an embodiment of the present invention. The method may include the steps of:

101. Acquire a target audio signal with beat characteristics obtained after processing the original audio signal.

Among them, the original audio signal is the audio signal when the music is playing, and the audio signal can be directly used for the music rhythm control of the ambient light, so that the light information of the ambient light changes synchronously with the rhythm of the music in real time, so as to enhance the atmosphere in the car and enhance the interior of the car. User's visual enjoyment.

Since the original audio signal is an audio signal collected by hardware, usually a digital signal converted from an electrical signal, the audio signal is similar to a sine wave, but it is not a regular sine wave. When the music volume is low, the fluctuation range is small, and the volume is high The time range is large. In order to adapt to a larger volume range, specifically, the waveform feature points in the original audio signal can be amplified using the segmented continuous amplification method to enhance the original audio signal, and further perform frequency division on the amplified original audio signal. segment to obtain the target audio signal with beat characteristics. Here, the amplification process can avoid the loss of too many signal features of the audio signal due to too low volume, and the signal is screened by frequency segmentation to obtain a signal with obvious beat characteristics.

In one embodiment, for the amplification process of the waveform feature points, a segmented continuous amplification method can be used, specifically, by determining the amplitude interval corresponding to the original audio signal, and dividing the amplitude interval according to the order of magnitude For multiple amplitude level intervals, the higher the amplitude level here, the greater the amplitude corresponding to the waveform feature points in the original audio signal in the amplitude level interval, and then for the waveform feature points in the original audio signal in different amplitude level intervals Set the amplitude amplification factor, and use the amplitude amplification factor to amplify the waveform feature points in the original audio signal to enhance the amplitude of the original audio signal. Here, the higher the amplitude level range, the smaller the amplitude amplification factor. For example, the corresponding amplitude interval of the original audio signal is 0-5, and the amplitude interval is divided into three amplitude levels of 0-1, 1-3, and 3-5, and the amplitude level is set for the first amplitude level 0-1. The value magnification factor is 5, the second amplitude level 1-3 sets the amplitude magnification factor to 3, and the third amplitude level 3-5 sets the amplitude magnification factor to 2, of course, in order to avoid the difference between each amplitude range after amplification If the gap between the amplitudes is too large, you can also not amplify the amplitude range with the largest amplitude level, that is, the amplitude amplification factor is set to 1, so as to avoid the excessive volume gap in the audio signal. Here, the amplitude amplification coefficients corresponding to different amplitude level intervals are not limited, and may be selected according to actual needs.

In one embodiment, the frequency segmentation process is performed on the audio signal, and different frequency bands reflect different zero-crossing characteristics on the corresponding waveform of the audio signal. Here, the frequency of the audio signal zero-crossing can be calculated by filtering in a specific frequency band, and then According to the number of zero-crossing points, the specific frequency band signal is screened out, and the interference in the specific frequency band signal is filtered to make the audio signal smoother.

102. Identify the music beat contained in the target audio signal by using preset determination conditions, and divide the target audio signal into multiple audio beat signals according to the identified music beat.

Considering the rhythmicity of the target audio signal, in order to make the light information more suitable for the music characteristics of the target audio signal, here you can use the preset judgment conditions to identify the music beat contained in the target audio signal, because the music beat reflects the target audio signal. The music characteristics can be used as the basis for controlling the lighting information, so that the lighting information can be synchronized with the rhythm of the music.

It can be understood that the determination conditions here include energy determination conditions and time determination conditions. Specifically, in the process of identifying the music beat contained in the target audio signal, the time corresponding to the marked position of the energy value in the target audio signal is used as the starting time, Use energy judgment conditions to judge whether the accumulated signal energy in the preset sampling period reaches the set energy threshold. The preset sampling period is the set number of sampling periods selected after the start time, and the accumulated signal energy in the preset sampling period When the set energy threshold is reached, use the time judgment condition to judge whether the time interval is greater than the set time threshold. The time interval is the time difference formed between the starting time and the current time. When the time interval is greater than the set time threshold Next, the audio signal corresponding to the start time and the current time is intercepted from the target audio signal as the music beat contained in the target audio signal, and the target audio signal is divided into multiple audio beat signals according to the music beat. For example, taking t1 in the target audio signal as the starting time, by selecting the sampling period T1 corresponding to the starting time and the sampling period T2 and sampling period T3 after the time t1, calculate the signal energy value in the sampling period T1-T3 And, if the sum of the energy values reaches the set energy threshold, it is further judged whether the time interval is greater than the set time threshold, and if the time interval is greater than the set time threshold, the audio signal of the corresponding time interval is intercepted as a music beat signal.

Wherein, the marked position of the energy value in the target audio signal is the valley position in the target audio signal, the position of the inflection point in the audio signal can be found according to the amplitude change in the adjacent sampling period in the target audio signal, and the trough position in the target audio signal can be determined. Peak position and valley position, using the valley position as the marker position of the energy value in the target audio signal.

It is understandable that the beat recognition process here adopts short-term energy judgment and beat interval limitation, which avoids the problems of wrong response of lighting information and frequent changes of lighting information in a short period of time, and improves the display effect of lighting information.

103. Generate a lighting control strategy suitable for the target audio signal according to the change of the energy value corresponding to each segment of the audio beat signal and the marked position of the energy value in each segment of the audio beat signal.

Among them, the lighting control strategy includes the lighting brightness control strategy and the lighting color control strategy. Specifically, according to the change of the corresponding energy value of each audio beat signal, the nonlinear corresponding relationship between the audio beat signal and the light brightness value can be set. According to the nonlinear The corresponding relationship generates a suitable lighting brightness control strategy for the target audio signal. When the target audio signal is executed to the mark position of the energy value in each audio beat signal, the color value is randomly selected from the light color table as the corresponding output light for each music beat signal color, and generate a light color control strategy suitable for the target audio signal according to the light color output corresponding to each music beat signal.

It can be understood that the visual effect produced by the same brightness change value in different basic brightnesses is different, for example, when the brightness value changes from 0 to 10, it has a more obvious brightness than when the brightness value changes from 80 to 90 Change effect, fully considering the impact of different brightness changes on the vision, set the nonlinear correspondence between audio beat signal and brightness value, and perform segmentation mapping for the appropriate brightness value of audio beat signal with different signal energy values, so as to To ensure the continuity of the brightness curve, this correspondence not only maintains the similarity between the brightness change curve and the audio signal curve, but also makes the brightness change better fit the change of the music beat.

Furthermore, in order to highlight the music beat, the highest brightness value of the light can also be output at the peak position of each beat, thereby enhancing the music effect accompanied by the light.

Specifically, in the process of generating a light brightness control strategy suitable for the target audio signal, multiple energy value intervals can be divided according to the change of the energy value corresponding to each audio beat signal, and the upper limit of the brightness value is set for each energy value interval, and the brightness The upper limit value is used as the mapping boundary to map the light brightness for each energy value interval, and the nonlinear correspondence between each audio beat signal and light brightness value is obtained, and the nonlinear correspondence between each audio beat signal and light brightness value is converted into The lighting brightness curve corresponding to each audio beat signal is combined with the lighting brightness curve corresponding to each audio signal to generate a lighting brightness control strategy suitable for the target audio signal.

Exemplarily, as shown in Figure 2, Figure 2 shows the nonlinear correspondence between the audio beat signal and the light brightness value. In Figure 2, the change of the energy value corresponding to the audio beat signal is 0-1, and three energy values are obtained by dividing The intervals are 0-0.2, 0.2-0.6, and 0.6-1. Similarly, the light brightness value distribution is 0-100%. For the segmented music beat signal corresponding to the energy value interval of 0-0.2, the segmented audio beat The signal is mapped to the luminance value range of 70%-100%, for the segmented audio beat signal corresponding to the energy value range of 0.2-0.6, the segmented audio beat signal is mapped to the luminance value range of 30%-70%, for the energy value range of 0-0.2 The segmented audio beat signal corresponding to the value range, and the segmented audio beat signal is mapped to the 0-30% brightness value range.

Specifically, in the process of generating a suitable lighting color control strategy for the target audio signal, visual interference will occur when the brightness and color in the lighting information change at the same time. Considering that it is more natural to trigger color switching when the lighting brightness is low, here you can Switch the light color at the valley position corresponding to the energy value of the audio beat signal, and keep the light color unchanged in an audio beat signal, use the brightness value change to highlight the strength of the beat, when the audio beat signal ends and the next The audio beat signal is coming and switches to the next color in response to the new beat. Usually, the duration of a beat in an audio signal is very short, about 300ms, and the human eye cannot easily see the timing of color switching and the asynchrony of the highest point of brightness.

It is understandable that the switching of the light color here can be selected from the color table in a random way. The random color selection function increases the diversity of the lighting atmosphere and also improves the adaptation range of the volume. The switching of the light color is also possible. Use the preset light color table to switch sequentially. The preset light color table can be adapted to the appropriate color according to the music style. For example, if the music style is more festive, you can configure more red-related lights in the light color table Color, music style is fresh, you can configure more greenish and blue related light colors in the light color table.

In the embodiment of the present invention, the diversity of light color switching is increased, and the function of randomly selecting light color is designed. After the specific light color switching command is issued, a random function will be triggered to generate a random number different from the previous time, and read according to the random number. The corresponding RGB value in the color table sends the switching command of the corresponding RGB color to the actuator. The method of randomly selecting the color of the light can make the same music play different effects repeatedly, increasing the diversity of the lighting atmosphere, and the color switching is not affected by the volume, which has better universality.

104. In response to the light control instruction, control the light brightness according to the light brightness control strategy to change with the energy value corresponding to each audio beat signal, and control the light color in each audio beat signal according to the light color control strategy The marker position of the energy value is switched.

Here, the light control command can be triggered by the music start button, and can also be triggered by the light start button. Here, the light control strategy can be embedded in the music rhythm lighting products to control the light color and light brightness during the music rhythm process. The specific light brightness can be changed along with the energy value corresponding to each audio beat signal in the music, and the light color can be switched at the marked position of the energy value in each audio beat signal.

In the actual application scenario, Fig. 3 shows a structural block diagram of the control process of lighting information provided by the embodiment of the present invention, first of all, the signal sampling processing step 201, which mainly processes the original audio signal obtained by the audio acquisition system, It includes two parts: signal enhancement and frequency band separation. Signal enhancement can amplify the characteristic points in the waveform signal to avoid the loss of too many signal features due to too low volume. Frequency band separation can filter the signal according to the frequency to obtain a signal with obvious beat characteristics, and then Calculate the △y value in the adjacent sampling period through the beat recognition step 202 to determine the peak position and valley position, and mark the peak position and valley position in the signal and send it to the lighting control step 203. The lighting control step 203 calculates according to the corresponding logic Lighting control strategy, including light brightness control and light color control. After the light brightness control and light color control are synchronized, the two control methods are integrated, and the audio signal fused with the lighting control strategy is sent to the actuator to pass the control The outputting step 203 outputs the change result of the color and brightness of the audio signal within a period.

In an actual application scenario, Fig. 4 shows a logic block diagram of the control process of light information provided by the embodiment of the present invention, after the audio signal is input in step 301, the audio signal is processed in step 302, and the beat identification step 303 is executed , and identify the peak position and valley position from the audio signal, further use the peak position and valley position to judge whether the beat condition is met, and use the recognized beat to control the change of light information. On the one hand, it is aimed at the control of light color. First judge whether the accumulated energy value reaches the set energy value threshold, and execute the step 304 of judging whether the judgment section is correct, if it reaches the set energy value threshold, further use the timer to judge whether the time interval reaches the set time threshold, and execute the judgment interval to meet the step 304, If the set energy value threshold is not reached, the color switching step 306 is executed, and the lighting color is controlled not to be switched; if the set time threshold is reached, the color switching step 307 is executed, the lighting color is controlled to switch and the timer resets to count again, If the set time threshold is not reached, perform the step 306 of not switching the color, and control the color of the light without switching. For the case of switching the color of the light, perform the random number generation step 308, and randomly select a color value from the color table as the light The color is switched, and the corresponding light color is output through the controller. On the other hand, for the control of the light brightness, after the peak position and the valley position in the audio signal are identified, the brightness control step 309 can be executed to directly use the energy value in the audio signal To control the change of the brightness of the light, and execute the controller output step 310, and output the corresponding brightness of the light through the controller.

Considering that there is a certain disturbance in the target audio signal or a very small music beat that cannot be discerned by the human ear, in order to improve the accuracy of the light color control in the light information, the form of short-term energy judgment is used here, that is, when the current music beat signal comes Start to accumulate the signal energy for a period of time after the current moment. When the accumulated energy value reaches the set energy threshold, judge whether the corresponding time interval reaches the set time interval. When the time interval reaches the set time interval, execute the lighting For color switching, if the time interval does not reach the set time interval, the light color switching will not be performed. For example, the time interval △t=60ms, when the time t is judged as the color switching time, then calculate the energy value within 60ms after this time to judge whether it is the correct switching reality, although it is delayed by several cycles in the timing, but due to the system The period is short, and there is no obvious delay effect visually. At the same time, in order to avoid frequent color switching in a short period of time, a time interval threshold is set as a judgment condition, that is, when the system sends out a color switching command, the timer resets and restarts timing until the next color switching command is issued. The entire color control algorithm partly ensures that there is both brightness and color following in a beat. When the overall brightness changes are small, the color switching can better make up for this deficiency.

The light information control method provided by the embodiment of the present invention, after obtaining the target audio signal with beat characteristics obtained after the original audio signal is processed, uses the preset determination conditions to identify the music beat contained in the target audio signal, and according to the identified The obtained music beat divides the target audio signal into multiple audio beat signals, and further generates a suitable lighting control strategy for the target audio signal according to the change of the corresponding energy value of each audio beat signal and the marking position of the energy value in each audio beat signal. The lighting strategy includes a lighting brightness control strategy and a lighting color control strategy. In response to the lighting control command, the lighting brightness is controlled according to the lighting brightness control strategy. With the change of the energy value corresponding to each audio beat signal, the lighting color is controlled according to the lighting color control strategy. The marker position of the energy value in each audio beat signal switches. It can be seen that, compared with the existing way of using frequency spectrum analysis audio signal to control light information, the embodiment of the present invention recognizes the music beat in the audio signal and sets the light information according to the music beat, so that the light can follow the The corresponding melody of the music changes to switch the color and brightness, thus solving the problem that the response of the light and the beat of the music do not fit well in the control process of the existing light information.

Based on the above embodiments, another embodiment of the present invention provides a light information control device, as shown in Figure 4, the device includes:

The acquisition unit 21 can be used to acquire a target audio signal with beat characteristics obtained after the original audio signal is processed;

The dividing unit 22 may be used to identify the music beat contained in the target audio signal using preset determination conditions, and divide the target audio signal into multiple audio beat signals according to the identified music beat;

The generating unit 23 may be configured to generate a lighting control strategy suitable for the target audio signal according to the change of the energy value corresponding to each segment of the audio beat signal and the marking position of the energy value in each segment of the audio beat signal. The lighting control strategy includes a lighting control strategy Brightness control strategy and light color control strategy;

The control unit 24 can be used to respond to the light control instruction, control the light brightness according to the light brightness control strategy to change with the change of the energy value corresponding to each segment of the audio beat signal, and control the light color according to the light color control strategy every time The position of the marker for the energy value in the audio beat signal of the segment toggles.

In an actual application scenario, the acquisition unit 21 includes:

The processing module can be used to amplify the waveform feature points in the original audio signal by using segmented continuous amplification to enhance the original audio signal;

The segmentation module can be used to perform frequency segmentation on the amplified original audio signal to obtain a target audio signal with beat characteristics.

In an actual application scenario, the processing module may specifically be used to determine the amplitude interval corresponding to the original audio signal, and divide the amplitude interval into a plurality of amplitude level intervals according to the order of magnitude, and the amplitude The higher the level, the greater the amplitude corresponding to the waveform feature point in the original audio signal within the amplitude level interval;

The processing module can specifically be used to set an amplitude amplification factor for the waveform feature points in the original audio signal in different amplitude level intervals, and use the amplitude amplification factor to amplify the waveform feature points in the original audio signal, In order to enhance the amplitude of the original audio signal, the higher the amplitude level range, the smaller the amplitude amplification factor.

In an actual application scenario, the determination conditions include energy determination conditions and time determination conditions, and the division unit 22 includes:

The first judging module can be used to use the time corresponding to the marked position of the energy value in the target audio signal as the starting time, and use the energy judging condition to judge whether the accumulated signal energy in the preset sampling period reaches the set energy threshold, the preset Let the sampling period be the set number of sampling periods selected after the initial moment;

The second judging module may be used to judge whether the time interval is greater than the set time threshold using the time judging condition when the accumulated signal energy in the preset sampling period reaches the set energy threshold, and the time interval is The time difference between the starting moment and the current moment;

The dividing module can be used to intercept the audio signal corresponding to the starting time and the current time from the target audio signal as the music beat contained in the target audio signal when the time interval is greater than the set time threshold, and dividing the target audio signal into multiple audio beat signals according to the music beat.

In an actual application scenario, the division unit 22 also includes:

The determination module can be used to use the energy determination condition to determine whether the accumulated signal energy in the preset sampling period reaches the set energy threshold before the time corresponding to the marked position of the energy value in the target audio signal is used as the starting time, according to Amplitude changes in adjacent sampling periods in the target audio signal determine peak positions and valley positions in the target audio signal, and use the valley positions as marker positions of energy values in the target audio signal.

In an actual application scenario, the generating unit 23 includes:

The setting module can be used to set the nonlinear corresponding relationship between the audio beat signal and the light brightness value according to the change of the corresponding energy value of each audio beat signal, and generate the suitable light for the target audio signal according to the nonlinear corresponding relationship Brightness control strategy;

The selection module can be used to randomly select the color value from the light color table as the light color corresponding to the output of each music beat signal when the target audio signal is executed to the mark position of the energy value in each audio beat signal, and according to each music beat signal The beat signal corresponds to the output light color to generate a light color degree control strategy suitable for the target audio signal.

In an actual application scenario, the setting module may specifically be used to divide a plurality of energy value intervals according to changes in energy values corresponding to each segment of the audio beat signal;

The setting module can specifically be used to set the upper limit of the brightness value for each energy value interval, and use the brightness upper limit value as a mapping boundary to perform light brightness mapping on each energy value interval to obtain each audio beat Non-linear correspondence between signal and light brightness value;

The setting module can also be used to convert the non-linear correspondence between each segment of the audio beat signal and the light brightness value into a light brightness curve corresponding to each segment of the audio beat signal, combined with the corresponding The light brightness curve generates a light brightness control strategy suitable for the target audio signal.

Based on the foregoing method embodiments, another embodiment of the present invention provides a storage medium on which executable instructions are stored, and when the instructions are executed by a processor, the processor implements the foregoing method.

Based on the above embodiments, another embodiment of the present invention provides a lighting information control device, including:

one or more processors;

storage means for storing one or more programs,

Wherein, when the one or more programs are executed by the one or more processors, the one or more processors are made to implement the above method.

The above-mentioned system and device embodiments correspond to the method embodiments, and have the same technical effect as the method embodiments. For details, refer to the method embodiments. The device embodiment is obtained based on the method embodiment. For specific description, please refer to the method embodiment part, which will not be repeated here. Those skilled in the art can understand that the accompanying drawing is only a schematic diagram of an embodiment, and the modules or processes in the accompanying drawing are not necessarily necessary for implementing the present invention.

Those of ordinary skill in the art can understand that: the modules in the device in the embodiment may be distributed in the device in the embodiment according to the description in the embodiment, or may be changed and located in one or more devices different from the embodiment. The modules in the above embodiments can be combined into one module, and can also be further split into multiple sub-modules.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A method for controlling lighting information, the method comprising:

acquiring a target audio signal with beat characteristics obtained by processing an original audio signal;

recognizing music beats contained in the target audio signal by using preset judgment conditions, and dividing the target audio signal into a plurality of sections of audio beat signals according to the recognized music beats;

generating a light control strategy suitable for the target audio signal according to the change of the energy value corresponding to each section of audio beat signal and the marking position of the energy value in each section of audio beat signal, wherein the light control strategy comprises a light brightness control strategy and a light color control strategy;

and responding to a light control instruction, controlling the light brightness to change along with the change of the energy value corresponding to each section of audio beat signal according to the light brightness control strategy, and controlling the marking position of the energy value of the light color in each section of audio beat signal to switch according to the light color control measurement strategy.

2. The method as claimed in claim 1, wherein obtaining the target audio signal with the beat characteristic after the original audio signal is processed comprises:

amplifying the waveform characteristic points in the original audio signal by using a segmented continuous amplification mode to enhance the original audio signal;

and carrying out frequency segmentation on the amplified original audio signal to obtain a target audio signal with beat characteristics.

3. The method of claim 2, wherein the amplifying the waveform feature points in the original audio signal by using the piecewise continuous amplification to enhance the original audio signal comprises:

determining an amplitude interval corresponding to an original audio signal, and dividing the amplitude interval into a plurality of amplitude level intervals according to the amplitude order, wherein the higher the amplitude level is, the larger the amplitude corresponding to a waveform feature point in the original audio signal in the amplitude level interval is;

setting amplitude amplification coefficients aiming at waveform characteristic points in the original audio signals in different amplitude level intervals, and performing amplification processing on the waveform characteristic points in the original audio signals by using the amplitude amplification coefficients so as to enhance the amplitude of the original audio signals, wherein the higher the amplitude level interval is, the smaller the amplitude amplification coefficient is.

4. The method according to claim 1, wherein the decision conditions include an energy decision condition and a time decision condition, and the identifying a music tempo contained in the target audio signal using the preset decision conditions and dividing the target audio signal into a plurality of pieces of audio tempo signals according to the identified music tempo comprises:

taking the moment corresponding to the mark position of the energy value in the target audio signal as an initial moment, and judging whether the signal energy accumulated in a preset sampling period reaches a set energy threshold value by using an energy judgment condition, wherein the preset sampling period is a sampling period of which the set number is selected after the initial moment;

under the condition that the accumulated signal energy in the preset sampling period reaches the set energy threshold, judging whether a time interval is greater than a set time threshold or not by using a time judgment condition, wherein the time interval is a time difference value formed by the starting time and the current time;

and under the condition that the time interval is greater than the set time threshold, intercepting the audio signal corresponding to the starting time and the current time from the target audio signal as the music beat contained in the target audio signal, and dividing the target audio signal into a plurality of sections of audio beat signals according to the music beat.

5. The method as claimed in claim 4, wherein before the time corresponding to the mark position of the energy value in the target audio signal is taken as a starting time and an energy determination condition is used to determine whether the accumulated signal energy in the preset sampling period reaches a set energy threshold, the method further comprises:

and determining the peak position and the trough position in the target audio signal according to the amplitude change in the adjacent sampling periods in the target audio signal, and taking the trough position as the mark position of the energy value in the target audio signal.

6. The method according to any one of claims 1-5, wherein generating the light control strategy suitable for the target audio signal according to the change of the corresponding energy value of each audio beat signal and the mark position of the energy value in each audio beat signal comprises:

setting a nonlinear corresponding relation between the audio beat signals and the light brightness values according to the change of the energy values corresponding to each section of audio beat signals, and generating a light brightness control strategy suitable for the target audio signals according to the nonlinear corresponding relation;

and when the target audio signal is executed to the mark position of the energy value in each audio beat signal, randomly selecting a color value from the light color table as the light color correspondingly output by each music beat signal, and generating a light color degree control strategy suitable for the target audio signal according to the light color correspondingly output by each music beat signal.

7. The method according to claim 6, wherein the setting of the nonlinear correspondence between the audio beat signal and the light brightness value according to the variation of the corresponding energy value of each audio beat signal, and the generating of the light brightness control strategy suitable for the target audio signal according to the nonlinear correspondence comprises:

dividing a plurality of energy value intervals according to the change of the energy value corresponding to each section of audio beat signal;

setting a brightness value upper limit for each energy value interval, and performing light brightness mapping on each energy value interval by taking the brightness upper limit as a mapping boundary to obtain a nonlinear corresponding relation between each section of audio beat signal and a light brightness value;

and converting the nonlinear corresponding relation between each section of audio beat signal and the light brightness value into a light brightness curve corresponding to each section of audio beat signal, and generating a light brightness control strategy suitable for the target audio signal by combining the light brightness curve corresponding to each section of audio signal.

8. A control device for lighting information, the device comprising:

the acquisition unit is used for acquiring a target audio signal with beat characteristics, which is obtained by processing an original audio signal;

the dividing unit is used for identifying the music beats contained in the target audio signal by using a preset judgment condition and dividing the target audio signal into a plurality of sections of audio beat signals according to the identified music beats;

the generating unit is used for generating a light control strategy suitable for the target audio signal according to the change of the energy value corresponding to each section of audio beat signal and the marking position of the energy value in each section of audio beat signal, wherein the light control strategy comprises a light brightness control strategy and a light color control strategy;

and the control unit is used for responding to a light control instruction, controlling the light brightness to change along with the change of the energy value corresponding to each section of audio beat signal according to the light brightness control strategy, and controlling the marking position of the energy value of the light color in each section of audio beat signal to switch according to the light color control measurement strategy.

9. A storage medium having stored thereon executable instructions, wherein the instructions, when executed by a processor, cause the processor to implement a method of controlling said lighting information.

10. A control device for lighting information, comprising:

one or more processors;

a storage device for storing one or more programs,

wherein the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method of the first aspect.

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