CN100508680C - A music-controlled luminous lamp bank apparatus - Google Patents
A music-controlled luminous lamp bank apparatus Download PDFInfo
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- CN100508680C CN100508680C CNB2004101026151A CN200410102615A CN100508680C CN 100508680 C CN100508680 C CN 100508680C CN B2004101026151 A CNB2004101026151 A CN B2004101026151A CN 200410102615 A CN200410102615 A CN 200410102615A CN 100508680 C CN100508680 C CN 100508680C
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Abstract
The music controlled light emitting lamp combination includes colored light emitting lamp combination and its driver. The driver generates square wave signal to control the light emitting state of the light emitting lamp combination. The music controlled light emitting lamp combination includes volume detecting module and check list, the check list has light emitting lamp controlling parameters stored for regulating the duty ratio of the square wave signal; and the volume detecting module is for inputting audio signal and analyzing the volume and varying rate to generate check list index fed to the check list so that the check list can output corresponding light emitting lamp controlling parameters to the driver and the driver can generate square wave signal in certain duty ratio to control the color and brightness of the colored light emitting lamp combination. Compared with available technology, the present invention has simple structure, rich colors and variation.
Description
Technical field
The present invention relates to a kind of brightness of electroluminescent lamp group and the control device of color, particularly a kind of device of music-controlled luminous lamp group.
Technical background
More present digital products, as products such as mobile phone, MP3 player, CD players, when playing back music or the tinkle of bells, in order visually to produce a kind of rhythm effect, rhythm and the LED electroluminescent lamp with music links together usually.Some main manufacturers link together the rhythm of music and the Kai Heguan of LED electroluminescent lamp now, promptly open and close along with the variation LED electroluminescent lamp of music or the tinkle of bells rhythm is rhythmical.Although this scheme has visually produced a kind of variation of rhythm, owing to having only bright dark variation, it does not have change in color, and cause visual variation relatively more dull.
Summary of the invention
The objective of the invention is: at the deficiencies in the prior art, provide a kind of simple and reasonable, the device of the music-controlled luminous lamp group that bright, the dark and color that particularly can make electroluminescent lamp changes with the volume of music of playing or the tinkle of bells.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of device of music-controlled luminous lamp group, comprise multicolor light-emitting lamp group and drive unit thereof, described drive unit produces square-wave signal, luminance with control multicolor light-emitting lamp group, also comprise volume detection module and look-up table, each row of described look-up table all stores one group of electroluminescent lamp Control Parameter, and described electroluminescent lamp Control Parameter is used to adjust the duty ratio of described square-wave signal; Described volume detection module is used for input audio signal, and analysis obtains volume and rate of change, thereby generation look-up table index, described look-up table is according to the look-up table index of input, the electroluminescent lamp Control Parameter of output correspondence is to described drive unit, so that described drive unit produces the square-wave signal with certain duty ratio, the color and the brightness of control multicolor light-emitting lamp group.
Described volume detection module can comprise volume maximum statistical module, volume slope variation statistical module and main control module,
Described volume maximum statistical module is used for input audio signal, and statistical comparison obtains the volume maximum;
Described main control module is used for output volume slope control signal and clock signal;
Described volume slope variation statistical module is imported described volume maximum and volume slope control signal, and calculates the slope that current volume changes, and judges whether volume change raises up, and whether the speed that raises up is enough fast, thereby produces the output look-up table index.
Described maximum statistical module is made of comparator and memory, described comparator is used to import the audio signal in a period of time, and relatively obtain the volume maximum, described memory is used to store this volume maximum, and on the one hand return to described comparator as the maximum of epimere time, export this volume maximum on the other hand to described volume slope variation statistical module.
Described volume slope variation statistical module is made of raise up comparator, slope comparator and counter of register, selector, sound,
Described register is deposited input from the clock signal of main control module and from the volume maximum of epimere time of maximum statistical module;
Described sound raises up comparator input from the volume maximum of the epimere time of register and from the current time volume maximum of maximum statistical module, and relatively the back produces electroluminescent lamp group ON/OFF signal to described drive unit;
The input of described selector is imported the volume maximum of described upper end time, and its control end input is from the slope control signal of main control unit, its output output volume slope threshold value;
The input of described slope comparator imports described volume slope threshold value and from the current time volume maximum of maximum statistical module, its output output comparative result is to counter;
Described counter produces look-up table index according to comparative result.
Described main control module comprises counter, register file, and described counter is used for clocking, and described register file is imported described clock signal and sent out from the system of bus and puts parameter, its output output voltage gradient control signal.
Described multicolor light-emitting lamp group adopts the LED electroluminescent lamp group of three kinds of colors of red, green, blue, and its drive unit adopts three groups of pulse-duration modulation signal generators that are used to control the LED electroluminescent lamp group of red, green, blue three looks respectively.
In technique scheme, the present invention is by setting up look-up table, make the electroluminescent lamp Control Parameter of wherein storage corresponding with the brightness and the color of multicolor light-emitting lamp group, and the electroluminescent lamp Control Parameter can make multicolor light-emitting lamp group drive unit produce the square-wave signal with certain duty ratio, this square-wave signal can be regulated the fluorescent lifetime of versicolor electroluminescent lamp in the multicolor light-emitting lamp group, like this, detect the volume of music by the volume detection module, thereby determine the index value of look-up table, export different electroluminescent lamp Control Parameter, make the mean flow rate of electroluminescent lamp group and the effect difference of color scheme, realized adjusting the brightness of electroluminescent lamp group and the purpose of color according to the volume of music.Therefore, relative prior art, it is simple in structure, easy to implement that the present invention has, and its may command electroluminescent lamp group obtains rich color, changes characteristics such as visual effect various, that be a splendid legacy.
Description of drawings
Accompanying drawing 1 is the performance diagram of audio signal;
Accompanying drawing 2 is a structural principle block diagram of the present invention;
Accompanying drawing 3 is the circuit block diagram of a kind of preferred embodiment of the present invention;
Accompanying drawing 4 is the circuit theory diagrams of Fig. 3.
Embodiment
Below in conjunction with Figure of description and specific embodiment the present invention is described in further detail.
At first, be necessary to introduce some relevant background technologies.
Figure 1 shows that the performance diagram of audio signal.The size of the volume of sound wave as shown in the figure, according to the characteristic of sound wave, the volume that people's ear is heard is the amplitude of sound wave up-down vibration, each peak that connects the positive direction vibration obtains the envelope of sound wave.The fluctuations of envelope fundamental reaction volume.When the slope of envelope is big, just represent a rhythm of melody.
The brilliance control of multicolor light-emitting lamp group.Electroluminescent lamp has only two kinds: open or close as the state of light-emitting diode (LED).Electroluminescent lamp is luminous when opening, and just extinguishes when closing.Imagination has electroluminescent lamp of square-wave signal control of certain duty ratio, and the state of electroluminescent lamp will be that light on and off replace, and is promptly luminous when the high level of square-wave signal, extinguishes during low level.
If the period T of square-wave signal is very short, human eye changes the light on and off of imperceptible electroluminescent lamp so, what replace will be the interior mean flow rate of each light period, promptly light a mean flow rate after time and the fall time weighting, by changing the duty ratio (ratio that the time that signal is high is shared) of square-wave signal, the brightness that just can control electroluminescent lamp changes like this.The resolution of square-wave signal duty ratio is high more, and the brightness that can regulate changes also can be careful more.
The color control of multicolor light-emitting lamp group.Can obtain multiple color effects when as you know, different colours is combined.Thereby, can control electroluminescent lamp luminous of different colours in the multicolor light-emitting lamp group and extinguish, obtain color combinations.And according to the three-primary colours principle of optical color, the combination by the versicolor varying strength of control RGB just can realize different color effects.As (0,0,0) is black, (255,255,255) white or the like.Therefore, can use the electroluminescent lamp combination of three RGBs to obtain various color effects.
Based on above-mentioned principle, the invention provides a kind of device of music-controlled luminous lamp group, with reference to figure 2, constitute by volume detection module, look-up table, multicolor light-emitting lamp group drive unit and multicolor light-emitting lamp group.
Described drive unit produces square-wave signal, with the luminance of control multicolor light-emitting lamp group.
Each row of described look-up table all stores one group of electroluminescent lamp Control Parameter.Can constitute by RAM, ROM or registers group.Described electroluminescent lamp Control Parameter is used to adjust the duty ratio of described square-wave signal.
Described volume detection module is used for input audio signal, and analysis obtains volume and rate of change, thereby generation look-up table index, described look-up table is according to the look-up table index of input, the electroluminescent lamp Control Parameter of output correspondence is to described drive unit, so that described drive unit produces the square-wave signal with certain duty ratio, the color and the brightness of control multicolor light-emitting lamp group.
Provide a kind of preferred embodiment of the present invention below.
As shown in Figure 3, described volume detection module is made of volume maximum statistical module, volume slope variation statistical module and main control module.Wherein,
Described volume maximum statistical module is used for input audio signal, and statistical comparison obtains the volume maximum.
Described main control module is used for output volume slope control signal and clock signal.
Described volume slope variation statistical module is imported described volume maximum and volume slope control signal, and calculates the slope that current volume changes, and judges whether volume change raises up, and whether the speed that raises up is enough fast, thereby produces the output look-up table index.
In the present embodiment, described multicolor light-emitting lamp group adopts the LED electroluminescent lamp group of three kinds of colors of red, green, blue, and its drive unit adopts three groups of pulse-duration modulation signal generators that are used to control the LED electroluminescent lamp group of red, green, blue three looks respectively.
With reference to figure 4, described maximum statistical module is made of comparator and memory, described comparator is used to import the audio signal in a period of time, and relatively obtain the volume maximum, described memory is used to store this volume maximum, and on the one hand return to described comparator as the maximum of epimere time, export this volume maximum on the other hand to described volume slope variation statistical module.
Described volume slope variation statistical module is made of raise up comparator, slope comparator and counter of register, selector, sound.Wherein,
Described register is deposited input from the clock signal of main control module and from the volume maximum of epimere time of maximum statistical module;
Described sound raises up comparator input from the volume maximum of the epimere time of register and from the current time volume maximum of maximum statistical module, and relatively the back produces electroluminescent lamp group ON/OFF signal to described drive unit;
The input of described selector is imported the volume maximum of described upper end time, and its control end input is from the slope control signal of main control unit, its output output volume slope threshold value;
The input of described slope comparator imports described volume slope threshold value and from the current time volume maximum of maximum statistical module, its output output comparative result is to counter;
Described counter produces look-up table index according to comparative result.
Described main control module comprises counter, register file (Register File), described counter is used for clocking, described register file is imported described clock signal and parameter is set, its output output voltage gradient control signal from the system of bus.
The concrete workflow of present embodiment is:
At first carry out system initialization.Described initialized process comprises the initialization procedure of system hardware.Also comprise set up look-up table (Look-Up-Table, LUT), each row of described look-up table all stores one group of electroluminescent lamp Control Parameter, described electroluminescent lamp Control Parameter is corresponding with the color and the brightness of the demonstration of multicolor light-emitting lamp group.Also comprise the threshold value of setting the volume change slope simultaneously, promptly pass through the selector output voltage gradient threshold value of register file and volume slope variation statistical module.
Then, gather volume by the volume detection module, and the maximum of the volume in statistics a period of time, and with this volume maximum preservation.
Judge that by volume slope variation statistical module described volume maximum judges whether volume raises up, if do not raise up, then directly exports the signal that the electroluminescent lamp group is closed again.Can certainly close the electroluminescent lamp Control Parameter of electroluminescent lamp group by look-up table output.
If volume raises up, then further whether judge described volume change slope greater than described threshold value, if then make index value=current index value+1, otherwise current index value is remained unchanged.
Behind the index value that look-up table obtains, the electroluminescent lamp Control Parameter that output is corresponding, the drive unit of multicolor light-emitting lamp group, be three groups of pulse-duration modulation signal generators of controlling red, green, blue three-colour light-emitting lamp group respectively in the present embodiment, electroluminescent lamp Control Parameter according to input, produce one group of pulse-width signal, thereby finish control the fluorescent lifetime of LED lamp with certain duty ratio.
So far finish the tempo variation control model, make three-colour light-emitting lamp group when the speed that volume raises up is enough fast, when promptly music rhythm changes, change its color and brightness, otherwise, keep original color and brightness constant, thereby realize changing its color and brightness according to the rhythm of music.
As can be seen from the above analysis, essence of the present invention is to utilize the variation of the duty ratio of square-wave signal, regulate bright, the dark and luminous duration of multicolor light-emitting lamp group, can obtain the different brightness and the principle of color, and by gathering the volume value of audio signal, select corresponding duty cycle adjustment parameter, it is the electroluminescent lamp Control Parameter, thereby the brightness of multicolor light-emitting lamp group and color can be changed according to the rhythm of music, therefore, the relative prior art of display effect of the electroluminescent lamp group that is obtained, color is abundanter, changeability is stronger, and display effect is better.
More than be a kind of specific embodiment of the present invention, in the practical application, circuit structure of the present invention can be made corresponding adjustment.Based on reason that can't all possible scheme of limit, all changes of doing according to technical solution of the present invention when the function that is produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (5)
1, a kind of device of music-controlled luminous lamp group, comprise multicolor light-emitting lamp group and drive unit thereof, described drive unit produces square-wave signal, luminance with control multicolor light-emitting lamp group, it is characterized in that: also comprise volume detection module and look-up table, described volume detection module comprises volume maximum statistical module, volume slope variation statistical module and main control module, described main control module comprises counter, register file, described counter is used for clocking, described register file is imported described clock signal and parameter is set, its output output voltage gradient control signal from the system of bus; Each row of described look-up table all stores one group of electroluminescent lamp Control Parameter, and described electroluminescent lamp Control Parameter is used to adjust the duty ratio of described square-wave signal; Described volume detection module is used for input audio signal, and analysis obtains volume and rate of change, thereby generation look-up table index, described look-up table is according to the look-up table index of input, the electroluminescent lamp Control Parameter of output correspondence is to described drive unit, so that described drive unit produces the square-wave signal with certain duty ratio, the color and the brightness of control multicolor light-emitting lamp group.
2, the device of music-controlled luminous lamp group according to claim 1, it is characterized in that: described volume maximum statistical module is used for input audio signal, and statistical comparison obtains the volume maximum;
Described main control module is used for output volume slope control signal and clock signal;
Described volume slope variation statistical module is imported described volume maximum and volume slope control signal,
And calculate the slope that current volume changes, judge whether volume change raises up, and whether the speed that raises up is enough fast, thereby produces the output look-up table index.
3, as the device of music-controlled luminous lamp group as described in the claim 2, it is characterized in that: described maximum statistical module is made of comparator and memory, described comparator is used to import the audio signal in a period of time, and relatively obtain the volume maximum, described memory is used to store this volume maximum, and on the one hand return to described comparator as the maximum of epimere time, export this volume maximum on the other hand to described volume slope variation statistical module.
4, as the device of music-controlled luminous lamp group as described in claim 2 or 3, it is characterized in that: described volume slope variation statistical module is made of raise up comparator, slope comparator and counter of register, selector, sound,
Described register is deposited input from the clock signal of main control module and from the volume maximum of epimere time of maximum statistical module;
Described sound raises up comparator input from the volume maximum of the epimere time of register and from the current time volume maximum of maximum statistical module, and relatively the back produces electroluminescent lamp group ON/OFF signal to described drive unit;
The input of described selector is imported the volume maximum of described upper end time, and its control end input is from the slope control signal of main control unit, its output output volume slope threshold value;
The input of described slope comparator imports described volume slope threshold value and from the current time volume maximum of maximum statistical module, its output output comparative result is to counter;
Described counter produces look-up table index according to comparative result.
5, as the device of music-controlled luminous lamp group as described in the claim 4, it is characterized in that: described multicolor light-emitting lamp group adopts the LED electroluminescent lamp group of three kinds of colors of red, green, blue, and its drive unit adopts three groups of pulse-duration modulation signal generators that are used to control the LED electroluminescent lamp group of red, green, blue three looks respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101026151A CN100508680C (en) | 2004-12-24 | 2004-12-24 | A music-controlled luminous lamp bank apparatus |
| US11/317,667 US7473837B2 (en) | 2004-12-24 | 2005-12-23 | Device and method for synchronizing illumination with music |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004101026151A CN100508680C (en) | 2004-12-24 | 2004-12-24 | A music-controlled luminous lamp bank apparatus |
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| CN1622731A CN1622731A (en) | 2005-06-01 |
| CN100508680C true CN100508680C (en) | 2009-07-01 |
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| CNB2004101026151A Expired - Fee Related CN100508680C (en) | 2004-12-24 | 2004-12-24 | A music-controlled luminous lamp bank apparatus |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703129B (en) * | 2004-12-24 | 2010-04-14 | 北京中星微电子有限公司 | Light cluster device varied with music |
| CN1703130B (en) * | 2004-12-24 | 2010-04-14 | 北京中星微电子有限公司 | Device for controlling light cluster by music |
| CN104219849A (en) * | 2014-09-16 | 2014-12-17 | 深圳市华海技术有限公司 | Method and device for controlling light-emitting equipment on basis of audio signal |
| CN105812989A (en) * | 2014-12-31 | 2016-07-27 | 鸿富锦精密工业（深圳）有限公司 | Loudspeaker |
| CN110896582A (en) * | 2018-08-22 | 2020-03-20 | 上海擎感智能科技有限公司 | Vehicle-mounted terminal and control method of backlight module of key |
| CN113692091B (en) * | 2021-08-11 | 2024-04-02 | 深圳市智岩科技有限公司 | Equipment control method, device, terminal equipment and storage medium |
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