SU1687287A1 - Light show device - Google Patents

Abstract

The invention relates to light music, in particular, to devices for automatically accompanying sound with light effects. The purpose of the invention — an increase in the efficiency of light-guided music — is achieved by means of a THORMSTREAM l element OR 12-1 12-g-g OR-NOT 13 and the formation of new F / g d; (in terms of connections, which allowed the formation of dynamic light patterns to depend on the param- eters of musical dynamics of the level of the musical signal and the dependence of the light-music accompaniment method; cf44.ii ,, -, -. - The device also has the HF and GERI detector 1, sound source 2 with i. & differentiator 3, boom and b / c I shift b registrar, tact; en.р, mountains С bandpass filter 7-1 7-n second, dp ". g C 1 8p switch 9-1 & g yc iri f- 4- - 1-1 Jupe of power, HCTJMHHK ii i (1 п 2 ил / f ™ F ..

Description

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The invention relates to light music, in particular, to devices for automatic accompaniment of sound with light effects. This can be used for light and light music design of discos, theatrical performances, park amusements, showcases, performances by variety ensembles of interior decorative lighting.

The aim of the invention is to increase the efficiency of the light accompanying music.

Fig. 1 shows a block diagram of a device for light-music accompaniment, Fig. 2 shows timing diagrams for the operation of the device.

The device for the light and music wiring contains the first detector 1 connected in series, the input of which is connected to the output of the sound source 2, differentiator 3 and the threshold unit 4 and the shift register 5 whose clock input is connected to the output of the clock generator 6 while the output of the sound source 2 is connected with inputs of n channels, each of which contains a series-connected band-pass filter 7 a second detector 8 switch 9 amplifier 10 power and a source 11 of light n elements OR 121 12 n element OR N 13 i and (i 1 p) whose input is connected to the corresponding output of the shift register 5 and the first input of the corresponding element OR 12 1 12 n the second inputs of which are connected to the corresponding outputs of the OR-NOT element 13 and the output of the I element OR 12 1 connected to the second input of the corresponding switch 9 and the information serial input of the shift register 5 is connected to the output of the horn unit 4

Fig. 2 denotes the voltage 14 at the output of the differentiator 3 corresponding to the rate of change (first derivative) of the envelope level (positive polarity) of the music signal selected by the first detector 1 and variable relative to the threshold A of the threshold block 4 and the voltage 15 at the output of the threshold block 4 A voltage 16 arriving at the information serial input of the shift register 5 at the output of the clock generator 6 arriving at the clock input of the voltage shift register 5 at the voltage 17-20 at the outputs of the shift register 5 (n the example is equal to 4) received, respectively, the second inputs of OR elements 12 January and April 12 inputs of AND NOT PI 13, the voltage 21 on the output element

OR HF 13 arriving at the first inputs of the elements OR 12 1 12 4, voltages 22-25 at the outputs of the elements OR 12 1 12 4 arriving at the second (control) inputs

dy switches 9194

The device works as follows

The audio signal from the audio source 2 is divided by a band pass

filters 71 7 p on the subband frequencies, then the second detectors 8 1-8 n the alternating voltage is converted into a constant which from the detectors 8 1-8 p through the switches 9 1 9 n is supplied to the power of 1 10 p power and controls the power of the sources 111 11 n light

At the same time, the audio signal from the sound source 2 is detected by the first detector 1. The output voltage of the first detector 1 through the differentiator 3 separating the first derivative of the envelope of the input signal controls the threshold unit 4

The output logic levels of the threshold block 4 are fed to the information serial input of the shift register 5, the shift register 5 operates in the information shift mode, which is available on the information serial input at the moments

0 decay of clock pulses from clock generator 6 to clock input. Shift register 5 is made, for example, on K155 IR1 microcircuits

The rectangular positive impulses at the output of the threshold block 4 are synchronous with the dynamic differences in the envelope of the input music signal and their duration is directly proportional to the magnitude of these differences

0 The frequency of the clock generator 6 is chosen from the condition that during the action on the information sequential input of the register 5 of the longest positive pulse of the clock generator 5, the number of pulses is generated equal to n

The threshold of the threshold unit 4 is selected so that it periodically operates in time with the level drops

0 music signal envelope selected by differentiator 3 at the nominal signal level at the input of the first detector 1

During the action of a positive pulse on the information sequential input of the shift register 5, the bits of the register 5 are sequentially filled with logical T from the low-order bit to the end of the shift register 5 with the oscillator frequency b

associated with dynamic differences in the level of the musical signal. The number of register bits filled with 5 GHz per minute is positive ;;; The pulses are directly proportional to their duration. Upon completion of the positive pulse on the information sequential input of the shift register 5, the formed combination of logical 1 at the outputs of the shift register 5 is sequentially shifted with the generator frequency 6, the bits of the shift register 5 are sequentially filled with logical O from the least significant bit by the end of the register 5 until the next positive pulse on the information serial input of the register 5 shift

When all bits of shift register 5 have a low logic level, which corresponds to the absence of dynamic musical signal drops to trigger threshold unit 4, the OR-NOT 13 element generates a high logical level at the first inputs of the OR 12 1 -12 n elements, translating They are in a state of high logic level at the outputs, which is permissive for switching on switches 9 1-9. P, through which in this case pass signals from the outputs of detectors 8 1 -8 n to the inputs of amplifiers 10.1. 10.p power

When there are information on the outputs of register 5, the shift caused by the dynamic differences of the music giant represented as groups of logs and 1, which are sequentially shifted from beginning to end of the register, the output voltage of the detectors 8 1-8.p is fed to the inputs of amplifiers 11.1. 11 n power in those channels in which logical inputs 1 from the corresponding outputs of the shift register 5 are fed to the second inputs of the switches 9 at a given moment in OR 12.1-12.

The time interval T1 corresponds to the cycle of formation and shift according to the register of a logical combination caused by the influence of a dynamic average difference (the combination consists of two logical 1 at the register outputs (see Fig.2). The intervals T2, T4, T6 correspond to musical fragments with low-intensity dynamic level differences signal (switches 9.1 ... 9.P are included in all frequency channels with high logic levels at the second inputs).

The interval TZ corresponds to the cycle of formation and shift in the register of a logical combination, caused by the action of a dynamic differential maximum possible

quantities. In this case, in the example of a specific embodiment, all bits of the shift register 5 are filled. The interval T5 corresponds to the cycle of formation and shift in the register 5 of a logical combination consisting of two following through a discharge of logic 1, caused by two short differences following one after the other with a sufficiently small time error,

0 that the first passage of the first logical time 1 in the register is shorter than the time difference between these logical 1

Thus, during the light accompaniment of musical fragments, characterized by a low intensity of the dynamic differences of the level A, all channels of the frequency separation of the signal work, and during the transition to the accompaniment

0 rhythmic music fragments characterized by rather high level differences, a rhythm analyzing system is included, which, through channel switches, controls the dynamic switching of the frequency division signal channels. The dynamic channel switching of the frequency division signal is produced by parallel rpvrin, 4Mi signals of the 0 signal LOVERS, POKNRLNO.S.Moving at a given speed, with the appearance of each group synchronously playing a zone with a dynamic difference of the level of a musical signal, and the number of resolution signals in the parallel group is directly proportional to the magnitude of this dynamic difference.

The device implements additional parameters of auditory and visual effects - dependence

0 formation of dynamic light patterns on the parameters of the dynamic differences in the level of a musical signal and the dependence of the method of light-music accompaniment on the dynamic characteristics of musical fragments.

The present invention has been developed for use in light control equipment for stage and discotheques.

Claims (1)

Formula of invention A device for light-music accompaniment, containing in series the first detector, the input of which is connected to the output of the sound signal source, a differentiator and threshold unit, as well as the shift register, the clock input of which is connected to the output of the clock generator, while the output of the sound source is connected to the inputs p channels, each of which contains a serially connected band-pass filter, a second detector, a switch, a power amplifier and a light source, characterized in that Yeni the shift and the first input of the corresponding element OR, the second inputs of which are connected to the corresponding outputs of the element OR NOT, and the output of the i-ro element the efficiency of the light accompaniment 5 OR is connected to the second input of the corresponding music, n elements OR of the main switch are entered into it, moreover, the information element OR NOT, the 1st input of which is the connecting serial input of the shift register To the corresponding output of the register is connected to the output of the threshold block. the shift and the first input of the corresponding element OR, the second inputs of which are connected to the corresponding outputs of the element OR NOT, and the output of the i-ro element  OR connected to the second input