CN2212869Y

CN2212869Y - Seeing and hearing phonetic spectrum display apparatus with multiple frequency spots and large screen

Info

Publication number: CN2212869Y
Application number: CN 94204070
Authority: CN
Inventors: 常玉德
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-03-03
Filing date: 1994-03-03
Publication date: 1995-11-15
Anticipated expiration: 2004-03-03

Abstract

The utility model provides a seeing and hearing phonetic spectrum display apparatus with multiple frequency spots and a large screen, which comprises an outer framework, a display inserted in the outer part of the outer framework, a lattice frame inserted in the middle part of the outer framework. The lower part of the utility model is provided with various insertion openings, a control knob, a position for mounting a switch, and a monitor. A plurality of radiating holes are arranged on the frame of the outer framework. The utility model is characterized in that a display element is arranged on the lattice frame. The control circuit of the display element comprises a buffer amplifier, thirteen narrow-band filters, and thirteen drivers. Each driver is connected with five monitors and a display. Thereby, the seeing and hearing phonetic spectrum display apparatus with multiple frequency spots and a large screen is realized.

Description

Seeing and hearing phonetic spectrum display apparatus with multiple frequency spots and large screen

The utility model relates to a kind of display unit, specifically a kind of multifrequency point large-screen audio-visual speech frequency spectrum display device that provides for public places of entertainment such as school voice classroom, dancing hall, auditoriums.

At present, the display area that can show voice or audible spectrum display device is all smaller, as the luminous frequency spectrum on recorder, karaoke machine or some stereo sets, generally all be to be main display device with LED light-emitting diode or fluorescent charactron, display area is restricted thus, and luminous frequency is less, is generally five～seven sections, is not easy to use under big occasion.

It is the minimum flat light emission of frequency spectrum with huge light-emitting diode or ordinary incandescent lamp (lampion) bubble that the purpose of this utility model is to provide a kind of, the light-emitting area size can change arbitrarily, multifrequency point, and audio signal had multi-functional multifrequency point large-screen audio-visual speech frequency spectrum display devices such as reception, processing, output, monitoring and supervision.

The purpose of this utility model realizes by following means.

A kind of multifrequency point large-screen audio-visual speech frequency spectrum display device, comprise outside framework, display screen and various socket, the installation site of control handle and switch, monitor, display, louvre, it is characterized in that controlling the light circuit, comprise input circuit, it is used to receive the various voice or the audio signal that need show, these signals carry out the microphony amplifier and amplify back (strong signal can without this amplifier), through buffer amplifier, make it become non-interfering audio signal, input to 13 identical narrow band filters of circuit form and carry out frequency division, part-frequency point is by 125HZ, and 1/2 frequency multiplication obtains 13 frequencies to 8000HZ.Signal divides three tunnel outputs; One the tunnel exports as circuit, is used as the signal source of miscellaneous equipment; One the tunnel pass to second buffer amplifier after, promote power amplifier, drive earphone or loudspeaker are monitored; Third Road links to each other with other 13 set drives then as main display output circuit, constitutes the preamplifier of monitor ﹠ display.The monitor that each driver is identical with five respectively connects, and is strong and weak to monitor a certain frequency output.A frequency is indicated by five monitors, 13 frequencies just have 13 * 5 monitors, these monitors are actual to be exactly the small-sized frequency spectrum that is made of LED, with the strong and weak control utmost point that removes 65 bidirectional triode thyristors of switch that changes of its signal, thereby control a little less than the light intensity and light of its load (huge light-emitting diode or incandescent lamp bulb or colored electric lamp bulb), thereby realized the circuit of multifrequency point large-screen voice spectrum display device.Two identical display devices are combined into one, can produce the comparative control effect.The supply voltage of the lamplight display part circuit of this equipment is 220V, and the remainder circuit is 9V, and adopts the independent supply power mode of RC decoupling, to improve the reliability of circuit working.

The utility model provides a kind of multifrequency point large-screen audio-visual speech frequency spectrum display device, owing in the control circuit of display element, adopt the microphony amplifier, the microphony signal also can be imported, and through buffer amplifier, make it become non-interfering signal, input to 13 narrow band filters and carry out frequency division, divide three tunnel outputs again; One the tunnel for miscellaneous equipment provides signal source, leads up to that buffering is amplified, power amplification is monitored; Another road is by 13 drivers, and each driver is with five monitor ﹠ displays again, realizes monitoring, carries out the demonstration of voice spectrum by display element, has realized the voice spectrum display device that multifrequency point and light-emitting area size can change arbitrarily.

The utlity model has the following drawings:

Fig. 1 is a shape assumption diagram of the present utility model;

Fig. 2 is the logic sketch of control lighting display circuit of the present utility model;

Fig. 3 is the circuit structure diagram of control lighting display circuit of the present utility model.

Below in conjunction with accompanying drawing the utility model is elaborated.

The appearance structure of multifrequency point large-screen audio-visual speech frequency spectrum display device, as shown in Figure 1.The rectangular outside framework made from aluminium alloy 21, the display screen 22 of ground glass or polymethyl methacrylate is installed in one side of outside framework 21, the screen work 27 that center fixed is with holes, display element 25 is installed on each hole of screen work 27, as incandescent lamp bulb (perhaps colored electric lamp bulb or huge LED), the scheme of installation of its bulb, as shown in Figure 1.The riding position of circuit, various socket and control handle switch that control light shows is 23,24 for monitor shows mouth, and the aluminium alloy of the top of outside framework 21 has louvre 26 cashier's office in a shop.The logic sketch of multifrequency point large-screen audio-visual speech frequency spectrum display circuit, as shown in Figure 2.All can select input from radio-cassette player, microphone and all audio signals,, external small-signal be amplified through voltage amplifier 4 from the signal of socket 1 by

socket

1,2,3.The signal that amplifies through voltage amplifier 4 from the signal of

socket

2,3 and socket 1 enters narrow band filter 6 through buffer 5, divides three tunnel outputs; One the tunnel is the signal source that output socket 7,8 is used as miscellaneous equipment; One the tunnel for promoting driver 11, monitor 12, display 13; Another road is through buffer amplifier 9, ingoing power amplifier 10.Power transformer 15 through direct current stabilizer 14 respectively connected mode be: A end connects driver 11, monitor 12 respectively, the B end connects power amplifier 10, the C end connects microphony amplifier 4, buffer amplifier 5, narrow band filter 6 and buffer amplifier 9 respectively, the D end is connected with input socket 1, and the E end is connected with display 13.The circuit structure diagram of its control lighting display circuit, as shown in Figure 3.From importing socket 1 signal through capacitor C ₁With resistance R ₁, be connected to amplifier G ₁Reverse input end, resistance R ₂Cross-over connection is in G ₁Reverse input end and output between, capacitor C ₂An end and G ₁Output connect the other end and potentiometer W ₁Connect W ₁Other end ground connection, sliding tap and R ₈Connect resistance R ₅An end and G ₁Output connect other end ground connection.C ₁With C ₂Be the alternating current path that constitutes audio signal, R ₂With R ₁Ratio can adjust multiplication factor, R ₅Be DC load resistance.The signal that is higher than 200mV is by 2,3 inputs of input socket.Input socket 2 is through capacitor C ₃, R ₆After the series connection, be connected to potentiometer W ₂An end, W ₂Other end ground connection, W ₂Sliding tap and resistance R ₉Connect, the mode of connection of input socket 3 is identical with input socket 2, by C ₄, R ₇, W ₃, R ₁₀Constitute.Through C ₃, R ₆And C ₄, R ₇Resistance-capacitance coupling; R ₆With W ₂, R ₇With W ₃Dividing potential drop, W ₂, W ₃W with input socket 1 ₁The same, the size of control output signal is passed through R respectively ₈～R ₁₀After three resistive isolation, input to buffer amplifier 5.Buffer amplifier 5 is made up of following circuit: capacitor C ₅Be connected to amplifier G ₂Positive input, G ₂Reverse input end link to each other with output, constituted input impedance height, the low voltage follower of output impedance, resistance R ₁₄An end and G ₂Output connect, other end ground connection, signal is by R ₁₄Two ends take out, deliver to 13 narrow band filters 6 respectively.Narrow band filter 6 is made up of following circuit: potentiometer W ₄, resistance R ₂₀Successively with amplifier G ₃Output connect capacitor C ₇With resistance R ₁₅After the parallel connection, an end and G ₃Reverse input end connect other end ground connection, resistance R ₁₆With C ₈Series connection, and cross-over connection is in G ₃Reverse input end and output between.The signal of input is after amplifier amplifies, and output is by C ₇, R ₁₅, R ₁₆, the C8 frequency-selective network feeds back to G ₃End in the same way.Have only input signal medium frequency and C ₇, R ₁₅, C ₈, R ₁₆The signal component of frequency-selective network natural frequency unanimity, its feedback quantity maximum, output variable are also maximum, thereby reach the purpose of frequency-selecting.The circuit of 13 narrow band filters is identical, and the frequency division scope is that gain is by W by 125HZ, 1/2 frequency multiplication 13 sections narrow band filters to 8000HZ ₄Regulate, because frequency-selective circuit separates, then gain is adjusted with the frequency adjustment and is independent of each other.G ₃Output one tunnel for respectively through R ₂₁, C ₁₈, C ₁₁, R ₂₂Resistance-capacitance coupling is connected with 8 with output socket 7, is used as the signal source of miscellaneous equipment, 13 band frequencies of this equipment can be exported to other electric equipment; One the tunnel exports to buffer amplifier 9, and the circuit of buffer amplifier 9 is formed identical with the formation of buffer amplifier 5, by R ₃₀, C ₁₇, G ₄, R ₃₁Form; Driver 11 is exported on another road, and driver 11 is made of following circuit: resistance R ₂₃With capacitor C ₁₃After the series connection, be connected to potentiometer W ₅An end, W ₅Other end ground connection, W ₅Sliding tap and driver G ₅Pin connect W ₅Can Control Driver G ₅The size of input signal, capacitor C ₁₄One be terminated at G ₅A pin, another pin of another termination, C ₁₄Be weakening electric capacity.Resistance R ₂₄With capacitor C ₁₅After the parallel connection, one terminates at G ₅15 pins, other end ground connection.Resistance R ₂₅, R ₂₆Series connection back and resistance R ₂₄Parallel connection, R ₂₅, R ₂₆Contact and G ₅Pin two connect.Capacitor C ₁₅, resistance R ₂₄Do peak value rectification, to obtain direct voltage, a part offers G ₅Itself, another part is through R ₂₅With R ₂₆Dividing potential drop is as G ₅The feedback of negative input end, its ratio has determined the multiplication factor of this driver.G ₅2 jiaos be negative input end, 3 jiaos is positive input terminal, R ₂₇Be G ₅Inner voltage-stabiliser tube CH provides operating current, and the CH amount of capacity can determine G ₅Output speed (generally between 1～4.7M, choosing).Signal amplifies the back from G ₅10～14 jiaos through R ₂₈Deng five resistance, the five tunnel export promotion monitor 12 successively.The circuit of five tunnel monitor is identical, the circuit of monitor 12 such as following formation: the resistance R of the base stage of triode BG and driver 11 ₂₈Connect, long-pending electrode successively with LED and resistance R ₂₉Connect, emitter is connected with the control utmost point of the bidirectional triode thyristor SR of display 13, the minus earth of SR, and anode is connected with load BZ, and load can be adopted incandescent lamp or lampion.Because narrow band filter 6 connects 11, one drivers 11 of 13 drivers and is with 5 monitors 12 again, thereby need to make 13 * 5(totally 65 as can be known) individual monitor 12 and 65 displays 13.Triode BG is operated in cut-off state when flat, and LED does not work, and when the base stage of up time BG obtained the dc signal of driver 11 outputs, BG then entered conducting state, and this moment, LED was bright, R ₂₉It is the current-limiting resistance of LED.When triode BG conducting, its emitter obtains output current simultaneously, the control of the bidirectional triode thyristor in this electric current and the display 13 extremely links to each other, between these the two poles of the earth, produce control voltage, voltage swing is decided with the output current size of monitor 12, so the angle of flow size of SR also is at random, make its load BZ produce the light signal that strong and weak length in time changes.Through buffer amplifier 9, promote power amplifier 10 by narrow band filter 6.Power amplifier 10 is made of following circuit: capacitor C ₁₈An end be connected the other end and W with the output of buffer amplifier 9 ₆, W ₇An end connect W ₆, W ₇Other end ground connection, W ₆, W ₇Sliding tap and two power amplifier G ₆Connect capacitor C ₁₉, C ₂₈An end and G ₆Connect other end ground connection.Capacitor C ₂₁, C ₂₂, R ₂₅, R ₃₆, C ₂₄, C ₂₂Series connection successively, C ₂₁The other end and G ₆Connect C ₂₂The other end and G ₆Connect R ₃₅, R ₃₆Contact and G ₆Connect stereophone EA ₁Be connected across C ₂₃, R ₃₅Two ends, EA ₂Be connected across R ₃₆, C ₂₄Two ends.W ₆, W ₇Control the size of input signal, also just controlled the size of volume, C ₁₉And C ₂₀Be respectively two power amplifier G ₆Shunt capacitance, C ₂₁, C ₂₂Be output capacitance, C ₂₃, R ₃₅With C ₂₄, R ₃₆For preventing that power amplifier from producing additional phase shift and being provided with.This lighting control circuit adopts the mode of power supply respectively, and the load BZ in the display 13 directly is connected on the 220V power supply, through transformer BK, diode bridge rectification, capacitor C ₂₅After the filtering, give driver 11 power supplies, promptly with driver 11 in resistance R ₂₇An end connect, again through direct current stabilizer 14, capacitor C ₂₆Be connected, power with power amplifier 10 after the filtering, through resistance R ₃₇Dividing potential drop, capacitor C ₂₇Give microphony amplifier 4, buffer amplifier 5, narrow band filter 6 and 9 power supplies of buffering amplifier after the filtering.Giving 4 power supplies of microphony amplifier is through resistance R ₄With G ₁Positive input connect R ₃Ground connection; Give buffer amplifier 5 power supplies, successively through resistance R ₁₃, R ₁₁With R ₈, C ₅Contact connect R ₁₂, C ₆An end respectively with R ₁₁, R ₁₃Contact connect, the other end is ground connection respectively.The supply line of narrow band filter 6, buffer amplifier 9 is identical with the supply line of buffer amplifier 5, respectively by R ₁₇, R ₁₈, R ₁₉, C ₉Constitute, through R ₁₇With G ₃Positive input connect, by R ₃₂, R ₃₃, R ₃₄, C ₁₆Constitute, through R ₃₂With R ₃₀, C ₁₇Contact connect, again through R ₃₈Dividing potential drop, capacitor C ₂₈Filtering is through resistance R ₆Be connected power supply with input socket 1.

Claims

1, a kind of multifrequency point large-screen audio-visual speech frequency spectrum display device, comprise the embedded screen work (27) in display screen (22), middle part that outside framework (21) and outside framework (21) are outside embedded, the bottom is provided with various sockets, control handle and switch installation site (23) and monitor (24), the frame of outside framework (21) is provided with louvre (26), it is characterized in that display element (25) is installed on the screen work (27), the control circuit of display element (25) includes:

(1) buffer amplifier (5) is by capacitor C ₅One is terminated at amplifier G ₂Positive input, G ₂Reverse input end link to each other resistance R with output ₁₄An end and G ₂Output connect other end ground connection, resistance R ₁₁, R ₁₃Series connection, R ₁₁The other end and C ₅The other end connect capacitor C ₆, resistance R ₁₂Respectively with R ₁₁, R ₁₃Contact connect other end ground connection;

(2) narrow band filter (6) is by potentiometer W ₄, R ₂₈Back and amplifier G successively connect ₃Output connect capacitor C ₇With resistance R ₁₅After the parallel connection, an end and G ₃Reverse input end connect other end ground connection, resistance R ₁₆With C ₈Series connection, and cross-over connection is in G ₃The back suction input and output between, resistance R ₁₇, R ₁₉Series connection successively, R ₁₇The other end and G ₃Positive input connect R ₁₈, C ₉An end respectively with R ₁₇, R ₁₉An end connect, the other end is ground connection respectively;

(3) driver (11) is by resistance R ₂₃With capacitor C ₁₃After the series connection, be connected to potentiometer W ₅An end, W ₅Other end ground connection, W ₅Sliding tap and driver G ₅Pin connect capacitor C ₁₄One be terminated at G ₅A pin, another pin of another termination, resistance R ₂₄With capacitor C ₁₅After the parallel connection, an end ground connection, the other end is connected on G ₅A pin, resistance R ₂₅, R ₂6 series connection back and resistance R ₂₄Parallel connection, R ₂₅, R ₂₆Contact and G ₅Pin two connect G ₅10～14 pins respectively through resistance R ₂₈Output;

(4) monitor (12) is by the base stage of triode BG and the resistance R of driver 11 ₂₈Connect, collector electrode successively with LED and resistance R ₂₉Connect;

(5) display (13) is connected with the control utmost point of the bidirectional triode thyristor SR of display (13) by the emitter of the diode BG of monitor (12), the minus earth of SR, and anode is connected with display element (25).

2, voice spectrum display device as claimed in claim 1 is characterized in that the signal through narrow-band filtering (6) output, can be respectively through R ₂₁, C ₁₀, C ₁₁, R ₂₂After the resistance-capacitance coupling series connection, connect and output socket 7 and 8.

3, voice spectrum display device as claimed in claim 1 is characterized in that the signal through narrow band filter (6) output, can promote power amplifier (10) through buffer amplifier (9),

(1) buffer amplifier (9) is made up of following circuit: resistance R ₃₀, capacitor C ₁₇Be connected in series in G successively ₄Positive input, G ₄Reverse input end be connected resistance R with output ₃₁One be terminated at G ₄Output, other end ground connection, R ₃₂, R ₃₄Series connection successively, an end and R ₃₈, C ₁₇Contact connect C ₁₆, R ₃₃Respectively with R ₃₂, R ₃₄Contact connect, the other end is ground connection respectively;

(2) power amplifier (10) is made up of following circuit: capacitor C ₁₈An end be connected with the output of buffer amplifier (9), the other end respectively with W ₆, W ₇An end connect W ₆, W ₇Other end ground connection, W ₆, W ₇Sliding tap and power amplifier G ₆Connect capacitor C ₁₉, C ₂₀An end and G ₆Connect other end ground connection, capacitor C ₂₁, C ₂₂, R ₂₅, R ₃₆, C ₂₄, C ₂₂Series connection successively, C ₂₁The other end and G ₆Connect C ₂₂The other end and G ₆Connect R ₃₅, R ₃₆Contact and G ₆Connect earphone EA ₁Be connected across C ₂₃, R ₃₅Two ends, EA ₂Be connected across R ₃₆, C ₂₄Two ends.

4, voice spectrum display device as claimed in claim 1, it is characterized in that the 220V power supply is behind transformer BK, diode bridge rectification, capacitor filtering, give driver (11) power supply, connect power supply behind direct current stabilizer (14), capacitor filtering, for power amplifier (10), behind electric resistance partial pressure, capacitor filtering, give microphony amplifier (4), buffer amplifier (5), narrow band filter (6) and buffering amplifier (9) power supply, connect power supply for input socket (1) through electric resistance partial pressure, capacitor filtering again.

5, voice spectrum display device as claimed in claim 1 is characterized in that display element (25) can adopt incandescent lamp, lampion and huge LED.