CN2203810Y - Multi-function pocket karaok machine - Google Patents

Abstract

The utility model relates to a multi-function pocket Kara OK machine, which can be used singly or can be matched with an audio recorder, a sounder, an electronic organ, etc. The input end of the signal amplifying circuit of a microphone is connected with two microphones, and the output end is connected with a mixing sound circuit and a resounding circuit. The output end of the resounding circuit and an external input signal are connected with the mixing sound circuit, and the output end of the mixing sound circuit is connected with an output amplification circuit. The output end of the output amplification circuit is respectively connected with two stereo headphones and an external output signal. The microphone and the stereo headphones are the integration of the microphone minitype stereo headphones of a machine body. The utility model has the advantages of complete function, wide use range, small size and convenient portability and use.

Description

Multi-function pocket karaok machine

The utility model is can use separately or drive (OK) machine with the multifunctional pocket OK a karaoke club that recorder, sound equipment, electronic organ etc. are used.

All be furnished with Kara OK function on the equipment such as used recorder, radio-cassette player, sound equipment, can in tapes such as played songs, use microphone to sing or performance under mixing of tape melody played.

1. owing to make one with main frame such as recorder, volume is big, and use is carried in inconvenience, uses and is subjected to spatial limitation, poor mobility, cost height;

2. narrow, the function singleness of the scope of application can only be sung under mixing of tape played, and can not use separately or be used with other electroacoustic equipments such as electronic organs.

The purpose of this utility model is to design and a kind ofly both can uses separately, can drive (OK) machine with the multifunctional pocket OK a karaoke club that recorder, sound equipment, electronic organ etc. are used again.

The input of microphone signal amplifying circuit of the present utility model links to each other with two microphone input circuits, output links to each other with the mixing sound circuit and the circuit that echoes; The output and the external input signal of circuit of echoing links to each other with the mixing sound circuit; The output of mixing sound circuit links to each other with output amplifier; The output of output amplifier respectively with two stereophone jacks with link to each other to external output signal.The integrated mini stereo headphones of microphone in the body of microphone and stereophone.

Operation principle of the present utility model is as follows:

1. Karaoke music accompany.By the signal of output such as videocorder, walkman, phonograph, electronic organ the mixing sound circuit with by the microphone input after microphone amplifying circuit amplifying signal mixing sound, again after output amplifier amplifies by stereophone or be inserted in broadcasts such as stero set in the stereophone jack.

2. microphone is recorded and is dubbed.The voice signal input of sound pick-up outfit is linked to each other with stereophone jack of the present utility model, can carry out microphone recording and dub.

3. synthetic dubbing.The output signal of the equipment of inserting is linked to each other with external input signal of the present utility model, link to each other with the audio input signal of recording arrangement to external output signal of the present utility model again, the sound mix that the sound and the microphone of original tape are imported can be synthesized and dub.

4. language exercise.Do not connect external input signal, the signal of being imported by microphone amplifies after overmulling acoustic-electric Lu Zaijing output amplifier amplifies through the microphone amplifying circuit, at last by stereophone output, can form the exerciser of a language learning.And can two people cooperate to carry out.

5. echo.Open the circuit that echoes, amplify after echo circuit delay and low-pass filtering are sent the output signal mixing sound of sound mixer and microphone amplifying circuit again back to through the microphone amplifying circuit, the formation effect that echoes by the signal of microphone input.The utlity model has following remarkable advantage:

1. have a style of one's own, both can independently use, can be used with other electroacoustic equipment again, multiple functional, the scope of application is wide;

2. volume is little, is convenient to carry use, is not subjected to the restriction of service time, space, occasion;

3. the circuit level height is safe and reliable, and cost is low, and applicable various users' requirement is particularly suitable for the young people and uses.

Accompanying drawing is an embodiment of the present utility model.

Accompanying drawing 1 is a block schematic diagram.

Accompanying drawing 2 is circuit theory diagrams.

In this embodiment,

Resistance R 1, R2, R3, R4, R27 10K Ω; R5, R6, R10, R14, R44 12K Ω; R7, R20, R25, R26 10 0 Ω; R8, R12, R31, R35 68K Ω; R9, R11, R16, R17, R32 1.2K Ω; R13, R21, R24, R29, R33, R34, R36, R45 5.6K Ω; R15 1K Ω; R18, R19,22K Ω; R22, R23 22K Ω; R28, R39 47K Ω; R 30 56K Ω; R37 1.5K Ω; R38, R40 33K Ω; R41 6.8K Ω; R42, R43 220K Ω; R46 100K Ω; Capacitor C 1, C2, C3, C4, C5, C14, C15, C18, C19 1 μ F/50V; C6 μ F/50V; C7, C8 100 μ F/16V; C9 5100F; C10, C13, C16, C17 1200F; C11, C12 200F; C20 4.7 μ F/16V; C21 4.7 μ F/50V; C22, C23 100F; C24 1000F;

Diode D1 light-emitting diode FG1140;

Triode BG1, BG2, BG3, BG4, BG5,3DG110;

Integrated circuit (IC) 1, IC2, LM386; IC3 MN3207; IC4 MN3120;

The utility model will be further described below in conjunction with accompanying drawing.

(1) input of microphone signal amplifying circuit (Unit3) (Unit2) links to each other with microphone input circuit (Unit1), output links to each other with mixing sound circuit (Unit4) and the circuit that echoes (Unit8);

(2) the echo output and the external input signal (Lin In) of circuit (Unit8) links to each other with mixing sound circuit (Unit4);

(3) output of mixing sound circuit (Unit4) links to each other with the input of output amplifier (Unit5);

(4) output of output amplifier (Unit5) is respectively with stereophone jack (Unit6), (Unit7), link to each other to external output signal (Lin out);

In Fig. 2, microphone input circuit Unit1, Unit2 are made up of socket CK1, resistance R 1, R2 and socket CK2, resistance R 3, R4 respectively.

Microphone signal amplifying circuit Unit3 is made up of triode BG1, BG2 and resistance R 5, R6, R8-R13.

Mixing sound circuit U nit is by resistance R 16-R25, and socket CK6 forms.

Dual track output amplifier Unit5 is by amplifier IC1, IC2, socket CK5, and resistance R 51, R52, capacitor C 7, C8, C22, C23 form.

Stereophone jack Unit6, Unit7 are made up of socket CK3, CK4.

Low frequency delay circuit IC3 and switch SW under echo circuit Unit is controlled by clock driver circuit IC4, triode BG3-BG5, resistance R 28-R48, the active low-pass filter circuit that R50, capacitor C 21, C24, C9-C19 constitute is formed.

The course of work of the present utility model is:

Through microphone signal amplifier amplifying signal two-way output is arranged, a route C5 is coupled on the input R16 of the reverberation circuit of being made up of R16-R25.Be coupled to through C4 on the input R37 of preceding applier of the low frequency delay circuit of being made up of BG5, R37-R41C15-C18 on another road, through this amplifier amplifying signal, be coupled to 3 pin of (bucket chain formula electric charge coupling type) the low frequency delayer IC3 that forms by IC3, IC4, R42-R48, R50, C19, C21, C24, SW through C18.IC3 is delay circuit, IC4, R5, C24 composition clock generation circuit, and it provides two groups of phase place differences for IC3, and the identical clock pulse of frequency.Delay time (being reverberation time) is by R50, the C24 decision, microphone signal through delaying time is by 7 of IC3, the output of 8 pin is through C19, R44 is coupled to, by BG3, R18-R31, C9-C11, and BG44R32-R36, on the input R29 of the two-stage low pass filter that C12-C14 forms, its effect is the high frequency composition that filtering is produced by delay circuit, the quality that guarantee is echoed, low pass filter output is divided into two-way, one the tunnel through R36, C14 is coupled on the input R17 of reverberator, another route C15 is coupled on the time-delay amplifier input terminal R40, delay time through delay circuit once more, back and forth go down with this, just make the R16 of two inputs of reverberator, identical and the microphone signal of asynchronism(-nization) of the last acquisition of R17 content, thus the effect that echoes of card start difficult to understand produced.

The accompaniment music of the two-way input signal of reverberation circuit and the input of CK6 stereo line input jack together is transported to, on the 3rd pin of output amplifier, IC1, IC2, after amplify respectively and to output to two stereophone jacks of CK3, CK4 and the stereo output plughole of CK5 circuit, circuit output plughole CK5 by C7, C8 and provide needed signal for sound pick-up outfit and public address equipment.

Claims (2)

1, multifunctional pocket OK a karaoke club start is characterized in that:

(1). the input of microphone signal amplifying circuit (Unit3) links to each other with microphone input circuit (Unit2) with microphone input circuit (Unit1), output links to each other with mixing sound circuit (Unit4) and the circuit that echoes (Unit8);

(2). the output of the circuit that echoes (Unit8) and external input signal (Lin In) link to each other with mixing sound circuit (Unit4);

(3). the output of mixing sound circuit (Unit4) links to each other with the input of output amplifier (Unit5);

(4). the output of output amplifier (Unit5) is respectively with stereophone jack (Unit6), (Unit7), link to each other to external output signal (Lin out).

2, multifunctional pocket OK a karaoke club start as claimed in claim 1 is characterized in that:

(1). the circuit that echoes (Unit8) is by low frequency delay circuit (IC3) and switch (SW) under clock driver circuit (IC4) control.Active low-pass filter circuit is formed;

(2). output amplifier (Unit5) mainly constitutes by two discharge circuits (IC1) with (IC2).

Images