CN2164624Y - Eight-function audio apparatus - Google Patents

Abstract

The utility model discloses an eight-function audio apparatus which is formed by the combination of an electronic organ, a microphone, a tape playing machine core and a machine box. The eight-function audio apparatus is characterized in that after two function conversion switches are connected between the two sets of output circuits of the electronic organ part, the microphone part and the tape player part, the output circuits are connected with two sets of exciting amplifiers and two sets of audio power amplifiers. The two function conversion switches can achieve the purpose of the use of eight kinds of functions. The utility model has novel design, convenient operation and compact combination and can simultaneously meet the actual demands of appreciation, performance, study and sound amplification. The utility model combines education with recreation, is favorable to the popularization and the improvement of music culture and is convenient for the reception of the users.

Description

Eight-function audio apparatus

The utility model relates to a kind of multi-functional audio, belongs to electronic musical instrument and low-frequency channel electronic technology field.

Existing stereo set is of a great variety, function is but often single, though what have has some functions, it is not enough that combined level is still disliked, for adapting to the needs that various occasions are used, often need purchase multiple stereo set, or select one of them or select wherein some modes with " playing with building blocks " and solve problem, such as, broadcast the stereotape program and need dispose a stereo cassette player, for obtaining higher tonequality and enough volumes, need allocating power amplifier and audio amplifier; Play electronic organ and need dispose a portable electronic qin,, also need allocating power amplifier and audio amplifier for obtaining higher tonequality and enough volumes; If desire is used electronic organ and the He Zou of tape music program, or above-mentioned all devices is used in the lump, or manage to change circuit for shared power amplifier and audio amplifier temporarily; In addition, as conference amplification, karaoke accompaniment etc. also must be equipped with its microphone amplifier, magnetic head signal amplifier, equipment such as power amplifier and audio amplifier separately.For obtaining multiple sound equipment purposes, the compound mode that this peripheral hardware " plays with building blocks " must cause some functional part, as above-mentioned power amplifier and audio amplifier etc. repeat purchase, be the significant wastage on a kind of economy and the raw material in fact, and cause volume numerous and jumbled, line is cumbersome, and the control operation trouble is used extremely inconvenience.

The purpose of this utility model is by the common circuit of utilizing electronic organ, magnetic tape sound reproducer, microphone, environment division, is designed to an integrated multi-functional sound equipment, and this sound equipment design has eight functions to be:

1: the tape stereophonic reproduction;

2: electronic organ is stereo to be played;

3: tape accompaniment, electronic organ are played (He Zou)

4: tape accompaniment, microphone are sung (i.e. Karaoke);

5: tape is sung, electronic organ accompaniment (claiming anti-Karaoke);

6: the electronic organ accompaniment, microphone is sung (singing and playing by oneself);

7: tape is sung, microphone vocal accompaniment (chorus);

8: conference amplification.

The utility model is achieved in that

Be equipped with one in portable electronic qin, one in microphone, one in magnetic tape sound reproducer core, one of the wooden cabinet of moulding similar " 61 key standard piano ", electronic circuit partial common audio amplifier, power amplifier, exciting amplifier, general supply, between two groups of outlet lines of electronic organ part, microphone part, magnetic tape sound reproducer part, be connected with two groups of exciting amplifiers, two groups of sound channel amplifirers after connecting two function switchs respectively, two function switch conversion and control just can reach the application target of eight functions.

The general supply circuit to the electric main step-down of 220V, rectification, filtering after, be defeated by the power amplifier part with different voltages respectively, electronic organ, player core, exciting amplifier, magnetic head signal amplifier and microphone amplifier circuit; Indicator light circuit.

Power amplifier partly adopts two groups of three frequency division formula power amplifiers that (one group of every sound channel) is identical, with eight integrated circuit TDA line 2030A is formation, and be equipped with corresponding high, medium and low sound loud speaker, utilize the lower part of body case to be designed to resonant tank, guaranteed good sound quality and enough power outputs.

Because various source of sound output levels is inconsistent, the power output of amplifirer meets the requirements during for the input of assurance off beat source, and two sound channels have all designed the exciting amplifier based on integrated circuit TDA2003A.

For guaranteeing good frequency equilibrium effect, tape playback partial design becomes discrete component type dual track magnetic head amplifier, its output is connected to the same phase of two function switchs respectively, microphone signal is by after the symmetrical distribution, being sent to two groups of identical microphone amplifiers amplifies, output is connected to the same phase of two function switchs respectively, and the output signal of electronic organ is drawn directly by the circuit output plughole of electronic organ and is connected with the same of two function switchs.

When finishing to various function conversion and control, utilize the corresponding two groups of transfer contacts in addition of function switch, the pin position is introduced in the power supply of two three look variable color light-emitting diodes to be controlled, make its corresponding different acoustic function send the matched combined of different glow colors, finish demonstration effect various functional statuses.

The utility model modern design, diverse in function, easy to use, combination are tightly played, taken into full account and taken into account the music-lover of different levels, satisfy the actual needs of appreciating, performing, learn, amplify simultaneously, the flexible transformation of its eight functions is used and is being got active atmosphere, increase the effect of temperament and interest, help popularizing and raising of music culture, the combination of multiple function makes good and cheap, is convenient to home school and receives.

The utility model concrete structure is provided by following examples and accompanying drawing.

Accompanying drawing 1 is eight function sound equipment bulk shape figure.

Accompanying drawing 2 is circuit structure block diagrams of eight function sound equipments.

Accompanying drawing 3 is control panel distribution maps of eight function sound equipments.

Accompanying drawing 4 is general route figure of eight function sound equipments.

Fig. 2, magnetic head 1, magnetic head amplifier 2, magnetic head amplifier 3, microphone 4, microphone amplifier 5, microphone amplifier 6, electronic organ line output 7, exciting amplifier 8, exciting amplifier 9, high audio power amplifier 10, sound intermediate frequency power amplifier 11, bass power amplifier 12, high audio power amplifier 13, sound intermediate frequency power amplifier 14, bass power amplifier 15, function switch 16, function switch 17.

Function switch 16 its control I sound channel, it has A, B, the C three-phase, connect magnetic head amplifier 2 respectively, microphone amplifier 5, an outlet line of electronic organ line output 7, function switch 17 its system control II sound channel, it has A ', B ', C ' three-phase connects magnetic head amplifier 3 respectively, microphone amplifier 6, another root outlet line of electronic organ line output 7, function switch 16 connect behind the exciting amplifiers 8 respectively and high audio power amplifier 10, sound intermediate frequency power amplifier 11, bass power amplifier 12 connects, function switch 17 connects behind the exciting amplifiers 9 respectively and high audio power amplifier 13, sound intermediate frequency power amplifier 14, and bass merit 15 connects.With eight IC(TDA2030A) be that two sound channel electronics three frequency division formula power amplifiers are formed at the center, the circuit structure of I sound channel amplifirer is IC ₁And IC ₂Form bass power amplifier 12, IC in the BTL mode ₅, IC ₆Form sound intermediate frequency power amplifier 11 and high audio power amplifier 10 respectively in the OTL mode, the circuit structure of II sound channel amplifirer is identical with the circuit structure of I sound channel amplifirer.With IC ₉And IC ₁₀(TDA2003) respectively form exciting amplifier 8, exciting amplifier 9 for the center, with BG ₁～BG ₇The element at center is formed the magnetic head signal amplifier 2 and 3 of two sound channels, with BG ₈, BG ₁₁The element at center is formed the microphone amplifier 5 and 6 of two sound channels, indicator light circuit has adopted two three look variable color light-emitting diodes, utilize the Synchronization Control of function switch, can make it to send respectively redness, green, red luminous mixing of green while and orange, three kinds of coloured light, collocation can produce nine kinds of illuminated in combination modes in twos, wherein there are two kinds of compound mode deixises identical, thereby finish the indicative function of eight kinds of difference in functionality states.

The general supply circuit to the electric main step-down of 220V, rectification, filtering after, output+18V is for power amplifier branch, 7.5V is for electronic organ, player core, exciting amplifier, magnetic head signal amplifier and microphone amplifier circuit in the output voltage stabilizing; Another group 6V output is for indicator light circuit.

During use, special-purpose Karaoke tape--the sound channel of this tape of packing in player core might as well be decided to be the I sound channel approximately and record accompaniment music, another sound channel, might as well be decided to be the II sound channel approximately and record song, (Chinese sing-in) tape special edition promptly is like this.

Putting A(LED1 when I sound channel function switch 16 glows) when II sound channel function switch 17 is put A ' (LED2 glows), the I sound channel is emitted is accompaniment music on the tape, and the II sound channel is emitted is the stereo function of putting band of song-realization on the tape.

When function switch 16 is put the A(LED1-redness), function switch 17 is put B ' (LED2-is orange), and the I sound channel is still emitted the accompaniment music on the tape, but the II sound channel is connected microphone circuit--realize the karaoke function.

When function switch 16 is put the A(LED1-redness), when function switch 17 was put C ' (LED2-green), the I sound channel was the tape music still, but circuit of electronic organ is connected in the road between II--and this moment, electronic organ can be instrumental ensembled with the tape music.

When function switch 16 is put the C(LED1-green), function switch 17 is put B ' (LED2-is orange) or function switch 16, and to put B(LED1-orange) when function switch 17 is put C ' (LED2-green), all have a sound channel to connect electronic organ in two sound channels, another sound channel is connected microphone, and--what this two states was realized is with a kind of function--sings and plays by oneself.

When function switch 16 is put the C(LED1-green), when function switch 17 is put A ' (LED2-redness), the I sound channel is connected electronic organ, and the II sound channel is emitted the song on the tape, and--this moment, the available electron qin was accompanied for singer's performance--is so-called anti-Kara OK function.

When function switch 16 is put the C(LED1-green), when function switch 17 is put C ' (LED2-green), I, II sound channel are all connected electronic organ---play for electronic organ is stereo this moment.

To put B(LED1-orange when function switch 16), when function switch 17 is put A ' (LED2-is orange), the I sound channel is connected microphone, the II sound channel is emitted the song on the tape--chorus with the singer this moment.

To put B(LED1-orange when function switch 16), when function switch 17 was put B ' (LED2-is orange), I, II sound channel were all connected and can be done conference amplification microphone circuit-this moment and use.

Claims (3)

1, the eight function sound equipments that become by electronic organ, microphone, magnetic tape sound reproducer core, cabinet, it is characterized in that in the electronic organ part, be connected with two groups of exciting amplifiers, two groups of sound channel amplifirers after connecting two function switchs respectively between two groups of outlet lines of microphone part, magnetic tape sound reproducer part.

2, eight function sound equipments according to claim 1, it is characterized in that tape playback partial design becomes discrete component type dual track magnetic head amplifier, its output is connected to the same phase of two function switchs respectively, microphone signal is by after the symmetrical distribution, send two groups of identical microphone amplifiers to amplify, output is connected to the same phase of two function switchs respectively, and the output signal of electronic organ is drawn directly by the circuit output plughole of electronic organ and is connected with the same of two function switchs.

3, eight function sound equipments according to claim 1 and 2, it is characterized in that function switch 16 has A, B, C three-phase, connect magnetic head amplifier 2, microphone amplifier 5 respectively, an outlet line of electronic organ line output 7, function switch 17 has A ' B ' C ' three-phase, connect magnetic head amplifier 3 respectively, microphone amplifier 6, another root outlet line of electronic organ line output 7.

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