SU1614821A2 - Device for color music accompaniment - Google Patents

Abstract

The invention can be used in light music to automatically accompany sound with light effects. The aim of the invention is to increase the expressiveness of the color organ composition. The goal is achieved by introducing N additional blocks of the 14.1, ..., 14.N, (N + 2) -th detector 15, third threshold block 16 and creating new functional connections. The device also contains a source of 1 audio signal, band-pass filters 2.1, ..., 2.N, detectors 3.1, ..., 3.N, (N + 1) -th 7, switches 4.1, ..., 4.N , power amplifiers 5.1, ..., 5.N, light sources, 6.1, ... 6.N, differentiator 8, threshold blocks 9, 12, coincidence unit 10, serial-parallel signal converter 11, controlled oscillator 13. 2 silt

Description

ABOUT

00 th

 f

L 43

The invention relates to color music, specifically to devices, you for automatically accompanying sound with light effects, can be used for white and color music for discotheques, theatrical performances, park rides, showcases, variety show performances, interior lighting and .sv. No. 1410995.

The purpose of the invention is to increase the expression of the color organ composition.

FIG. 1 is a block diagram of a device for color organ accompaniment: FIG. 2 - timing diagrams for the operation of the device.

A device for color-musical accompaniment contains a source of 1 sound signal, the output of which is connected to the inputs of n channels, each of which contains a series-connected band-pass filter 2.1, ..., 2, n, detector

3.13.p, switch 4.14p, amplifier

5.15P power and source 6.1b.p

light, and also contains (n + 1) -th detector 7, the input of which is connected to the output of the audio signal source 1, differentiator 8, serially connected first threshold unit 9, the input of which is connected to the output of differentiator 8, coincidence unit 10, series-parallel a signal converter 11 connected in series to a second threshold unit 12, the input of which is connected to the output of (n + 1) detector 7 and the input of differentiator 8 and a controlled oscillator 13 whose input is connected to the second input of the coincidence unit 9 and to the output of the second threshold Vågå unit 12, and the output unit 10 to output coincidence, n additional blocks 14.1, ..., 14.p matcher, (n + 2) th detector 15 and the third threshold unit 16, with each i-th

additional block 14.114.p matches

connected between the corresponding i-th output of the series-parallel converter 11 signal and the input of the i-ro switch 4.14.p, and between the input of the series-parallel converter 11 signal and the combined second inputs n of blocks 14.1, ..., 14, n matches connected successively, the detector 16 and the third threshold unit 16,

FIG. 2 denotes: voltage 17 at the output of (n + 1) detector 7, voltage 18 at the output of differentiator 8, voltage 19 at the output of the first threshold unit 9, voltage 20 at the output of the second threshold unit 12, voltage 21 the entrance

a series-parallel converter 11, a voltage of 22 at the output of (n + 2) - th detector 15, a voltage of 23 at the output of the third threshold unit 16,

Level A in diagram 17 corresponds to the input trigger voltage of the second threshold unit 12, level B in diagram 18 corresponds to the trigger threshold of the first threshold unit 9, level C in diagram 22 corresponds to the threshold threshold of the third threshold

block 16.

The device works as follows.

5 The audio signal from the audio source 1 is divided by band-pass filters 2.1, ..., 2.n into frequency subbands, then by detectors 3.1, ..., 3.n, the alternating voltage is converted into

0 constant, which is from the detectors 3.13.p

through switches 4.14.p is fed to

5.15 power amplifiers and controls the brightness of 6.1 b light sources. At the same time, the audio signal from the audio source 1 is detected by the (n + 1) detector 7, the output voltage of the (n + 1) detector 7 controls the second threshold unit 12 and through a differentiator that separates the first derivative 30 the envelope of the input signal, the first threshold unit 9,

When the voltage at the input of the second threshold unit 12 is below its threshold, i.e. when high logic level 35 at the output of the second threshold unit 12 (diagram 20) corresponds to the state of the signal at its input below the trigger threshold, the controlled oscillator 13 generates pulses at the input of the serial-parallel signal converter 11. The operation of the second threshold unit 12 causes a breakdown of the oscillations of the controlled generator 13 and permits the passage of pulses from the output of the first threshold unit 45 9 through the unit 10 to match the input of the series-parallel converter 11 of the signal. Each input pulse in series-parallel 10 of the signal converter 11 changes a combination of 50 logical states at its outputs in accordance with the conversion law. Output logic levels in series parallel converter 11 signal-.

la, through additional blocks 14.114, p

55 matches control switches

4.14.P on control inputs.

A channel analyzing the presence of clocking pulses at the input of a series-parallel signal converter 11, consisting of a series-connected detector 15 and a third threshold unit 16, controls the switching of all switches 4.14 through additional blocks 14.1...., 14.p match. n at the same time

In the absence of a serial-parallel converter of a clock signal 11 at the input, which corresponds to musical fragments characterized by smoothness and a low level of dynamic fluctuations of the signal level, the output signal (detector 15 is absent, and the third threshold unit 16 outputs a logical level, which through additional blocks 14.114.P coincidence includes switches 4.14.p of all channels

frequency signal separation and prohibits the passage of signals present at the second inputs of additional blocks

 + I.p coincide.

When the situation changes in the music signal resulting in the appearance of clock pulses at the input of a series-parallel signal converter 11, (n + 2) detector 15 converts these pulses into a constant voltage sufficient to operate the third threshold block 16 and remove from the first inputs an additional match prohibiting

level, after which the state of each of the switches depends on the logical level at the second input of the corresponding additional block 14.114.P.

Diagram 21 shows clocking pulses of a low, in this example, logic level, each of which causes 3 changes of combinations of states at the outputs of a series-parallel converter 11. Diagram 22 shows the envelope of these pulses, highlighted by a (n + 2) -th detector 15 which changes from 4 levels relative to the threshold from the third threshold block 16. When triggered, the third threshold block 16 outputs a low logic level, which permits the output signals to pass through 4 parallel converter 11, through additional blocks, match 14.114.n to the control inputs of the switches 4.14.p. When the interval between the clock pulses at the 50 input of the serial-parallel converter 11 is greater than T1 (recovery time of the output voltage of the (n + 2) -th detector 15 to the threshold level C. of the third threshold unit 16), the third threshold unit 55 passes to the state of high logic level at the output, which, acting on the first inputs of the second blocks of coincidence, translates their outputs

5 10 5

0 5

in the state of being for

switches 4.14.p.

Switching light combinations are synchronously connected to the leading edges of the clock pulses (with differences from a high logic level to a low) at the input of the series-parallel converter 11. In view of this, each light pattern determining the combination of the frequency channels turned on and off can be fixed for a time not exceeding the sum of the duration of the clock pulse that caused it, and the recovery time of the detector 15. The recovery time constant of the (n + 2) -th detector 15 and the level C is the threshold actuation threshold unit 16 are chosen so that the interval T1 is equal to 1-2

The time interval T2 corresponds to the dynamic light accompaniment of music by periodically starting and stopping the controlled oscillator 13 caused by fluctuations of the overall envelope of the music signal allocated by (n + 1) -th detector 7 relative to the threshold A of the second threshold block 12. Interval TK within the interval T2 corresponds to the time interval between the output pulses of the controlled generator 13, which exceeds the recovery time T1 of the (n + 2) -th detector 14 During the TK interval, after the time T1, klyuchayuts switches all frequency channels in connection with operation of the third threshold block 16 (Figure 23).

 The time interval T4 corresponds to dynamic light accompaniment of music by forming clock pulses at the input of a serial-parallel converter 11 synchronously associated with dynamic differences in the envelope of the music signal, differentiated by differentiator 8, when the total level of the envelope exceeds threshold A, and the peaks of differences (variable signal signal envelope) periodically exceed the threshold B of the first threshold block 9. The low output logic level of the second threshold block 12 is blocked by a controlled generator 13, and the passage of pulses synchronous with dynamic differences of the music signal, generated by the first threshold block 9, is allowed through block 10 to match the input of the serial-parallel converter 11. The interval T5 within the interval T4 corresponds to the time interval between the clock pulses, exceeding time t1.

During the interval T5, after the time T1 has elapsed, the switches 4.1, ..., 4.p of all frequency channels are switched on in connection with the operation of the third threshold block 16 (high logic level in diagram 23).

The time interval T6 corresponds to the light accompaniment of a musical fragment with a high overall signal level and a low level of dynamic differences (for example, sound of wind or sounding instruments and the absence of percussion). In this case, the clock pulses at the input of the series-parallel converter 11 are absent (constant level in diagram 21 ). In this mode, through time T1, after the start of interval T6, switches 4,1, ..., 4.ri of all channels are turned on with signal vb; the course of the third threshold block 16 through additional blocks 14.1, ..., 14, n matches , and the device operates in frequency division mode,

With musical phrases and fragments characterized by smoothness, when the total envelope of the musical signal is higher than the threshold threshold of the Eztoro threshold block 12, and its differences are lower than the trigger threshold of the first threshold block 9 (intervals TK, T5 and T6), the pulses at the input of the serial-parallel converter 11 are absent, and at the outputs of a series-parallel converter 11 a parallel combination of logic levels is fixed, having established with the arrival of the last clock pulse at the input. The combination can be changed only with the arrival of the next clock pulse when dynamic musical phases appear.

In the device during the TZ, T5 and Tb intervals (there are no pulses at the input of the series-parallel converter 11), the third threshold unit 16, at the time T1 after the start of each of these intervals, provides the first inputs of the additional blocks 14.1, 14. n matches the logic level that translates their outputs independent of the state of the second inputs to the states that are inclusive for channel switches 4.1, .., 4.p.and signals of all frequency channels are fed through power amplifiers 5 to sources of light 6 .

If there is a serial-parallel converter at the input, 11 clocking pulses that cause dynamic switching of logical combinations to its

detector 15 generates a clock pulse envelope which translates the output of the third threshold block 16 into a state that is

passing parallel logical combinations of a series-parallel converter 11, through additional blocks 14.1, ..., 14.p, matches to the control inputs of the switches 4.1, ..., 4.p.

Periodic transition from dynamic switching of frequency channels to the switching on mode of all frequency channels depending on the dynamism of musical phrases and fragments increases the entertainment and information content of the light accompaniment, introduces an additional element of surprise, makes the system more flexible when accompanied by different dynamics of musical works and fragments.

Additional blocks 14.1, ..., 14.p matches can be performed on the OR, OR-NOT, AND, AND-NOT logical elements depending on what logical level (O or 1) the operation is expressed by

the third threshold unit 16, and also depending on which logical level at the second (control) inputs of the switches 4.1, ..., 4.p is inclusive.

Additional blocks 14.114.pso- drops are performed on the OR elements, the operation of the third threshold unit 16 is expressed by a low logic level at its output, the switches 4.1, ..., 4.p include a high level at the second (control) inputs and are performed, for example, on chips К176 КТ1,

Claims (1)

Invention Formula The device for color and music accompaniment on the author No. 1410995, characterized in that, in order to increase the expressiveness of the color-musical composition, n additional coincidence blocks are introduced into it, (n + 2) -th detector and a third threshold unit, each i-th additional coincidence block included between the corresponding i-th the output of the series-parallel signal converter and the input of the i-ro switch, connected in series (n + 2) detector and the third threshold unit are connected between the input of the series-parallel signal converter and the connected second inputs n aux ADDITIONAL block matcher. f7 rz 73 "S-e 18 6 19i r 7 l1 X A Z U / g.2 t 5 z