CN106304539A - A kind of music lantern controller design method followed based on rhythm - Google Patents

A kind of music lantern controller design method followed based on rhythm Download PDF

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Publication number
CN106304539A
CN106304539A CN201610627665.4A CN201610627665A CN106304539A CN 106304539 A CN106304539 A CN 106304539A CN 201610627665 A CN201610627665 A CN 201610627665A CN 106304539 A CN106304539 A CN 106304539A
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color
music
rhythm
time
color lamp
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CN201610627665.4A
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CN106304539B (en
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陈科明
王乐
江倩
杨小雨
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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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
    • H05B47/10—Controlling the light source
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The present invention relates to a kind of music lantern controller design method followed based on rhythm.Present invention employs music rhythm extraction algorithm based on the detection of wave type energy variation characteristic and devise acoustic features and with color lamp color space mapping relations model, audio signal is processed, judge to reach music rhythm Detection results by short-time energy extreme value, obtain the time point information of music rhythm.At the time point that music rhythm occurs, short signal at this time point is carried out spectrum analysis and process, obtain real-time acoustic wave energy and frequency domain character parameter, set up pitch and color gamut, tone color and saturation respectively, loudness of a sound and the mapping relations model of brightness, changing color lamp color is the color that audio volume control frequency domain information at this point is converted to, it is achieved the change of color lamp color is Tong Bu with music rhythm change.The present invention uses color gradient mechanism in color lamp drives, it is achieved the soft conversion of lighting effects.

Description

A kind of music lantern controller design method followed based on rhythm
Technical field
The invention belongs to intelligent scene lighting field, relate to a kind of following the use with acoustic character based on music rhythm The music lantern controller design method of controlled in wireless end in intelligent scene illuminates.
Background technology
Intelligent scene illumination refers under intelligent illuminating system environment, and by wireless control apparatus, (remote controller, mobile phone is applied Deng) switch, brightness and the color etc. of light are adjusted, it is achieved the different lighting effects under different scenes.
Intelligent scene lamp decoration generally uses LED light source.Conventional sight illumination has music lamp light effect, and light is along with music And change.Realize music lantern lighting effects, need to use music lantern controller.Music lantern controller is a kind of broadcasting sound The equipment of color lamp is regulated in real time time happy.The implementation of the most common music lantern controller includes two kinds: one is basis Specific music, artificial layout color lamp color change sequence, then change coloured silk when playing music according to the colour sequential set Lamp color, this method can realize preferable color lamp color change effect, however it is necessary that the layout respectively of different songs different Color change sequence, this needs to consume substantial amounts of time and human cost.Another kind of method is that when playing music, timing changes Color lamp color, the operation of this method is fairly simple, it is achieved be also easier, but color lamp light variation effect becomes with music rhythm Change the harmony between sense of rhythm poor.
Summary of the invention
The purpose of the present invention is aiming at the deficiencies in the prior art, it is provided that relates to one and follows and acoustics based on music rhythm The music lantern controller design method of controlled in wireless end in intelligent scene illuminates of feature analysis.
Signal data in the present invention is audio waveform data, and its modulation system is PCM(Pulse Code Modulation), the PCM data of its sound intermediate frequency can be decoded by the audio file of various coded formats and obtain.
1, the audio volume control signal data for obtaining carries out short-time analysis, is i.e. divided into one section one section and processes, Mei Yiduan Signal is referred to as a frame, the acoustic information such as short-time energy and pitch tone color of obtaining each frame.
2, according to the change of the signal energy between adjacent several frames, it is judged that whether the time point at a frame signal place is rhythm Point.
3, to each frame signal through BPF(Band Pass Filter) it is filtered, filter the frequency that human ear can be heard Frequency component outside scope, then carries out fundamental frequency and formant extraction and analysis, obtains the loudness of a sound of sound, pitch and tone color letter Breath.Set up the sound basic acoustic features mapping relations model to hsv color space.The hsv color information being converted to is turned It is changed to RGB color information, is sent to color lamp by wireless network, change color lamp color.
Beneficial effects of the present invention: the present invention uses music rhythm to extract, acoustic features and hsv color space mapping relations Model, color space conversion, RGB color lamp gradual change responds.Realize the change of color lamp color and follow music rhythm, accompanied by music rhythm speed The change of rate, color lamp rate of color change changes therewith.The auditory properties of color lamp color and sound is coordinated mutually, the sound that music is different Adjust the color performance using color lamp different.The loudness of music uses color lamp brightness to show, and tamber characteristic uses color lamp color Saturation is distinguished.Use rhythm extraction algorithm based on the detection of energy peak valley, regulate color lamp color according to tempo variation The speed changed.Self adaptation difference music beat type and tone are constituted, it is not necessary to for specific music artificial pre-programmed color lamp face Color, also solves traditional music color lamp sense of rhythm and the poor difficult problem of auditory visual integration degree simultaneously.
Accompanying drawing explanation
Fig. 1 is the method basic procedure block diagram of the present invention；
Fig. 2 is acoustic characteristic and the color mapping relations schematic block diagram of the present invention；
Fig. 3 is voice fundamental frequencies and the function relation curve of tone value H of design in embodiments of the invention；
Fig. 4 is the flow of information schematic block diagram of embodiments of the invention；
Fig. 5 is the color lamp response delay Analysis schematic diagram in embodiments of the invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
It is illustrated in figure 1 the basic procedure block diagram of music lantern controller design.The ripple of music is obtained from audio file After shape, waveshape signal being carried out short-time analysis, processed by signal subsection, each segment signal is referred to as a frame.The time appearance of each frame Deng, a length of 20 ~ 100ms.Calculate each frame energy and, be adjacent the comparison of energy variation between a few frame by a frame, Judge that whether the time point at this frame signal place is beat point or the cadence period end points of music.If the energy of n-th frame signal Amount is En, and a preferable beat point discrimination formula is as follows:
IfE n Meet the condition in above formula, then the time point at n-th frame signal place is judged to a beat point.Cadence period is not only Comprising beat point, also rhythm end points, end points is the time point that a cadence period terminates or another cadence period starts.One Individual preferable cadence period end points discrimination formula is as follows:
IfE n Meet the condition in above formula, then the time point at n-th frame signal place is judged to a cadence period end points, now One cadence period is over, and next cadence period will start.
The overtone frequency extracting the short-time energy of sound wave signal, fundamental frequency and each order at beat point is distributed, respectively Obtain loudness of a sound, the basic acoustic information of the sound such as pitch and tone color.For the acoustical characteristic parameters obtained, shown in Fig. 2 Mapping relations model, is converted to color parameter.Color data is sent to color lamp node by wireless network, triggers color lamp color Change.
It is illustrated in figure 2 the mapping relations schematic diagram of sound fundamental characteristics and color lamp color.First by loudness of a sound, tone color and sound Mapping relations are set up in high feature and hsv color space, and wherein loudness of a sound correspondence tone H, tone color correspondence saturation S, pitch correspondence is bright Degree V.The amplitude of loudness of a sound sound wave characterizes, and the fundamental frequency of pitch acoustical signal represents, tone color acoustical signal difference order general The difference of loudness of a sound degree is distinguished.After acoustical characteristic parameters is converted to hsv color parameter, carry out color space conversion, by hsv color Parameters Transformation is RGB numerical value.Tone value H can not at will be arranged, and will combine consideration with sound pitch parameter, a preferable reference Relation formula is as follows:
In formulaf m For the fundamental frequency of this frame signal,f M For the present embodiment sets fundamental frequency maximum.Utilize human ear to low frequency Band frequency sensitive, the characteristic more weak to high-band frequency change separating capacity, set variation relation between tone and frequency Be calculated as fundamental frequency the lowest time tone variations the most obvious with pitch variation, and the highest tone of fundamental frequency with frequency change the mildest.Such as Fig. 3 institute It is shown as the mapped function relation curve of voice fundamental frequencies and tone H.Saturation S needs associating consideration with overtone frequency distribution situation, One reasonable referring-to relation is as follows:
A in formula0For fundamental frequency respective amplitude.AnFor n-th order overtone frequency respective amplitude, the overtone intensity distributions of different orders Difference, A0And AnCan be obtained by the Analysis of Magnitude-Frequency Characteristic of signal.Brightness value V needs to combine consideration with the loudness of a sound of music, one Reasonable referring-to relation is as follows:
In formula, Amp is the amplitude of this segment signal, and amplitude can characterize the size of loudness of a sound.Use sine relation so that sound sound During strong change, color lamp brightness changes the most obvious in certain interval, it is thus achieved that good variation effect.
It is illustrated in figure 4 the information flow diagram of music lantern director demon.First from MP3 audio file, decoding Obtain the PCM Wave data of this music, be saved in data buffer zone, wait pending.The PCM Wave data of relief area, needs to do Duplex treatment, on the one hand needs short-time analysis, to the energy and the frequency information that obtain each frame signal after PCM waveshape signal framing And extract acoustical characteristic parameters, it is color data by the mapping relations model conversion shown in Fig. 2, and preserves chronologically.Another Aspect needs to be sent to player, is play by audio frequency apparatus.During music, with the frame length of short signal as time Interval, timing acquisition music progress, and judge at this time point whether be in cadence period by rhythm determining program Beat point or end points, at the time point at beat point place, be that the frame signal at this time point maps by color lamp color change The color arrived.At the time point at rhythm end points place, only change the V-value in color lamp hsv color value, the most only change color lamp brightness.
Fig. 5 show color lamp response delay Analysis schematic diagram in the present embodiment.Response time delay refer to color lamp color change into The time difference existed between degree and music progress, may cause the factor responding time delay to include signal sampling statistics and process Time-consumingly, network transmission response is time-consuming, and node response is time-consuming and the response of color lamp color gradient is time-consuming.The present embodiment can will decode Operation is carried out, in advance can obtain, during ensureing music, the color lamp color data that currently playing progress is corresponding in time.? When music is to a certain frame place time point, in addition it is also necessary to several frame data after this time point are decoded and process needed for obtaining Characteristic, for rhythm judge.After the temporal information obtaining rhythm point place, the most certain according to total time delay situation Time sends corresponding color lamp color data, thus ensures the change of color lamp color and music rhythm synchronizing.

Claims (4)

1. the music lantern controller design method followed based on rhythm, the music signal in the method is the PCM of music Wave data, uses the mode of short-time signal analysis, obtains music signal energy in short-term and frequency characteristic, by reflecting of setting The relation of penetrating is converted to the color of color lamp, and is sent to color lamp by wireless network, changes color lamp color, it is characterised in that:
(1) for the PCM Wave data of music, carry out short time treatment, be divided into the little segment signal that every segment length is equal, referred to as one Frame, length range is 20 ~ 100ms；Obtain the most a bit of short-time energy and frequency characteristic data and preserve chronologically；
(2) use short-time energy to extract the rhythm characteristic of music relative to the mode of situation of change analysis, obtain in music signal each Beat point and the time point at rhythm end points place in individual cadence period, and the time point change color lamp color occurred at beat point, The time point occurred at rhythm end points only changes color lamp brightness；
(3) music loudness of a sound, pitch and tonal characteristics the most in the same time and color lamp are set up in color lamp color H SV the most in the same time and are mapped Relation；Wherein pitch associates with the tone value H in hsv color space, and tone color associates with intensity value S, and loudness of a sound closes with brightness value V Connection；
(4) before music commences play out, first detection color lamp response time delay, adjust color change according to time delay situation in good time and refer to The transmission time of order, it is achieved color lamp color and the real-time synchronization of musical specific property.
A kind of music lantern controller design method followed based on rhythm the most according to claim 1, it is characterised in that: The mapping relations of tone value H:
In formulaf m For the fundamental frequency of frame signal,f M For the fundamental frequency maximum set.
A kind of music lantern controller design method followed based on rhythm the most according to claim 1, it is characterised in that: The mapping relations of intensity value S:
A in formula0For fundamental frequency respective amplitude, AnFor n-th order overtone frequency respective amplitude.
A kind of music lantern controller design method followed based on rhythm the most according to claim 1, it is characterised in that: The mapping relations of brightness value V:
In formula, Amp is the amplitude of frame signal.
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CN108135050A (en) * 2017-12-19 2018-06-08 惠州市物联微电子有限公司 A kind of pickup LED toning lamps
CN108135063A (en) * 2017-12-20 2018-06-08 广州达森灯光股份有限公司 The light-dimming method and system of lamps and lanterns
CN108196888A (en) * 2017-12-28 2018-06-22 福建海媚数码科技有限公司 A kind of control method and system of scene lamp
CN108319657A (en) * 2018-01-04 2018-07-24 广州市百果园信息技术有限公司 Detect method, storage medium and the terminal of strong rhythm point
CN109272808A (en) * 2018-11-13 2019-01-25 上海艺瓣文化传播有限公司 A kind of interaction systems towards the teaching of music beat rhythm and science popularization
CN109491283A (en) * 2018-10-19 2019-03-19 上海擎感智能科技有限公司 Colorful musical note synchronous control method, mobile unit and music player devices
CN109922556A (en) * 2017-12-12 2019-06-21 深圳思码威科技有限公司 Light sound inter-linked controlling method and system
CN109922560A (en) * 2018-12-03 2019-06-21 广州新晨汽车零部件有限公司 A kind of vehicle-mounted atmosphere lamp system of real-time music regular movements control
CN110688518A (en) * 2019-10-12 2020-01-14 广州酷狗计算机科技有限公司 Rhythm point determining method, device, equipment and storage medium
CN110896578A (en) * 2018-09-06 2020-03-20 上海博泰悦臻网络技术服务有限公司 Music rhythm-based in-vehicle atmosphere lamp adjusting method and system and electronic equipment
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CN111399745A (en) * 2020-03-26 2020-07-10 腾讯音乐娱乐科技（深圳）有限公司 Music playing method, music playing interface generation method and related products
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CN112153787A (en) * 2020-09-23 2020-12-29 北京百瑞互联技术有限公司 Method, device and medium for rhythm colored lamp according to LC3 Bluetooth music rhythm
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CN112286349A (en) * 2020-10-23 2021-01-29 广东科徕尼智能科技有限公司 Sound-based visual interaction control method, intelligent terminal and storage device
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CN112857560A (en) * 2021-02-06 2021-05-28 河海大学 Acoustic imaging method based on sound frequency
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CN113573442A (en) * 2021-07-16 2021-10-29 广东和音元视电子科技有限公司 Method, apparatus, and computer-readable storage medium for audio control of scenes
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CN108135050A (en) * 2017-12-19 2018-06-08 惠州市物联微电子有限公司 A kind of pickup LED toning lamps
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