CN2080698U

CN2080698U - Voice synthesis advertisement apparatus

Info

Publication number: CN2080698U
Application number: CN 90224132
Authority: CN
Inventors: 刘宏彬; 颜必长; 胡宇; 颜永红; 史维崎
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-27
Filing date: 1990-11-27
Publication date: 1991-07-10

Abstract

The utility model relates to a voice advertisement apparatus composed of a microphone 1, a power switch 2, a conversion key 3 for amplifying / recording sound, a time switch 4, a sampling channel selector 5, a voice recording key 6, a play key 7, a stop key 8, a timing device 9, a laminated cell 10, a socket 11, an earphone jack / regulated power supply socket 12, a loudspeaker 13, a power amplifying circuit board 14, a regulated power supply 15, a volume regulating button 16 and conducting wires 17. The users of the voice advertisement apparatus can synthesize, store and automatically play voice advertisement or other words at any time according to different occasions, and the voice advertisement apparatus has the advantages of small size, little power consumption, convenience for carryover, etc.

Description

Voice synthesis advertisement apparatus

The utility model is a kind of phonetic synthesis advertisement device.

In traditional speech advertising equipment, employing be tape recorder and reproducer, need mechanical hook-up by precision, have magnetic head, tape wearing and tearing, mechanical aging, problem such as motor life is short, functional reliability is poor; And repeat playing needs frequent rewinding, troublesome poeration, very flexible.The equal volume of these equipment is big, power consumption big, inconvenience is carried.

The purpose of this utility model is exactly to propose the advertising device that a kind of timing repeats recording playback at above-mentioned defective, and the user can synthesize, store and automatic voice advertisement broadcasting or other term at any time according to the requirement of different occasions.

The purpose of this utility model is achieved in that the sound by microphone input people, voice signal converts electric signal to, after pre-service, delivers to voice and records/put among the LSI, this LSI adopts continuous variable delta modulation principle to encode, and numerical data write among the DRAM stores; During broadcast, record/put LSI and will have the voice data taking-up among the DRAM and synthesize voice signal, behind wave filter LPF, obtain and the original the same envelope waveform of sound.After power amplifier amplifies, can repeat playback by loudspeaker automatically by timing circuit control.

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

Fig. 1 is an electrical block diagram of the present utility model

Fig. 2 is the utility model structural representation

1, microphone, 2, power switch, 3, amplify/the recording playback conversion, 4, time switch, 5, the sampling channel selection, 6, record button, 7, playback button, 8, stop key, 9, the timing adjusting knob, 10, laminated cell, 11, socket, 12, earphone jack/stabilized voltage supply socket, 13, loudspeaker, 14, power amplifier plate, 15, stabilized voltage supply, 16, the volume adjusting knob, 17, lead.

Fig. 3 is the voice operation demonstrator schematic diagram,

Fig. 4 is a continuous adjustable timing circuit of time

Fig. 5 is filtering and amplifying circuit

Fig. 6 is a power amplifier

Fig. 3 is a schematic diagram of the present utility model, and wherein each pin function of recording playback LSI TMS3477 is:

PB: input pin, playback control; STOP: record and play stop control; REC: input pin, recording control; PAUSE: input pin, pause function; RESET: input pin, remove control; OSCOUT: vibrate; OSCIN: vibration is gone into; SPKR: voice output; MIC: phonetic entry; VDD:+5V voltage; VSS: ground; AP _O-AP _nAddress bus; RAS: output pin, row address is selected; CAS1: output pin, column address is selected, and sheet selects 1; CAS2: output pin, column address is selected, and sheet selects 2; WE: output pin, write control; DATA: bidirectional data line.

In Fig. 3, when finishing sound-recording function, the language tube becomes voice signal into electric signal, and through filtering, pre-process circuits such as amplification are by C ₃This simulating signal is encoded, form numerical data through the DATA pin, at RAS, CAS1, CAS2, WE and AP _O-AP _nUnder the control on pin, deposit among the DRAM, otherwise 3477 from DRAM, take out numerical data during playback, by the output of SPKR pin, promote speaker operation by power amplifier again through the DA conversion.

Contact switch S ₁, S ₂, S ₃And S ₄Realize the control of recording, playback, time-out and shut-down operation respectively, R ₁Play metering function; And the delay pulse of continuous adjustable timing circuit output of time adds the PB pin, makes this advertisement device manually have the function that chooses at random automatic repeat playing of the time interval in the playback control; R ₃And C ₆Constituted the start automatic reset circuit; By C ₁And R ₂The RC oscillatory circuit of forming provides 3477 frequency of operation; Single-pole double-throw switch (SPDT) K ₁Effect be to make the utility model also can be used as portable loudspeaker to make impromptu speech usefulness, advertisement device K ₁Place 1 end, loudspeaker places 2 ends, is about to pretreated simulating signal and directly inserts the power amplifier part, promotes loudspeaker and amplifies; VDD meets 5V power supply, C ₂Strobe; Running status selects circuit to realize such as selections such as sample frequency or DRAM kinds; And the duty demonstration is also finished by specialized circuitry.

Continuously adjustable timing circuit of the time that Figure 4 shows that, it is to trigger delay circuit by the monostable that NE555 is connected into, wherein trigger pip is the inversion signal of CAS, the low pulse of CAS output when 3477 enter the recording playback state, recording playback becomes high level when finishing, thereby produce a following jump pulse, this pulse is connected on trigger end 2, makes 555 output V ₃Last jumping, this moment, power supply passed through R ₁₁To C ₈V is worked as in charging ₆Charge to V ₆Charging finishes V during=2/3VD=2/3 * 5=3.3V ₃Following jumping, thus one section delay pulse T produced _P, T _PFixed by the RC value, quantitative relationship T is arranged _P=τ Ln VD/(1/3VD) ］=τ Ln3=1.1R ₁₁C ₈Adjustable resistance R ₁₁Make T _PAdjustable, but should note R ₁₁Can not be excessive, otherwise charging current is less than C ₈Leakage current, then timing circuit can not starting of oscillation.K among Fig. 4 ₂Be a toggle switch, the conversion of its may command manual state and definition status.When being operated in definition status in order to make, hand switch also works, and this circuit is at V ₃With PB end adjunction one diode D ₁, with R ₁Form nationality position circuit together, work as V ₃Be in the time-delay state, i.e. V ₃Be high level, 3477 still enter tone playing state, otherwise this moment S ₂Inoperative.

Fig. 5 is filtering and pre-amplification circuit, wherein R ₆, R ₇Constitute microphone electric current working properly (0.4mA) with microphone; C ₄Constitute low pass with microphone resistance, be triode Q ₁Input; R ₆, R ₈And R ₉Constitute Q ₁Dc bias (V _a=0, V _b=0.6V, V _c=2V), V _cBe through pretreated simulating signal MIC input as 3477.

The low-frequency power amplifier circuit of Fig. 6 for constituting, wherein adjustable resistance R by LM386 ₂₄Regulate usefulness as volume.

What storage circuit DRAM used is that 511000,3477 of 1M position can be selected two, so maximum storage capability is the 2M position.For the advertisement device, the 32K sample frequency can be recorded the voice messaging in 64 seconds by this DRAM that calculates the 2M position to produce the good sound quality effect completely.If less demanding, and wish to have the voice typing of long period, can select the 16K sampling tonequality, but 128 seconds voice of typing then.

This advertising device is compared than existing procucts has following obvious advantage:

(1) adopt the all-electronin digital circuit, need not by mechanical part, functional reliability has qualitative leap than tape recorder.

(2) adopt DRAM as memory element, can at any time upgrade recording substance according to different occasions, after having added sound amplification function, the utility model can satisfy the requirement of advertisement flexibility fully.

(3) all electronic circuit that is the center with this CMOS LSI of TMS3477 because of employing, so system architecture is simple, power consumption is little, in light weight, volume is little, I﹠M is convenient, and with low cost, has higher performance.

(4) have adjustable automatic reproducing function of time, easy and simple to handlely have manual broadcast simultaneously concurrently, adaptability is strong.

(5) selected TMS3477 as recording playback LSI, it has higher sample frequency (can reach the 64K sampling rate), so this advertisement device tonequality is good, and the intonation nature.

Claims

1, a kind of phonetic synthesis advertisement device, form by recording playback controller and audio amplifier, it is characterized in that above-mentioned recording playback controller comprises: microphone 1, power switch 2, amplify/recording playback conversion 3, time switch 4, sampling channel selection 5, record button 6, playback button 7, stop key 8, timing adjusting knob 9, laminated cell 10, socket 11, earphone jack/stabilized voltage supply socket 12; Above-mentioned audio amplifier comprises: loudspeaker 13, power amplifier plate 14, stabilized voltage supply 15, volume adjusting knob 16; Both are linked to each other by lead 17.

2,, it is characterized in that the speech processor employing has record, stops, puts the TMS3477 of effect in the recording playback controller according to the described advertisement device of claim 1.

3, according to claim 1,2 described advertisement devices, it is characterized in that regularly recording playback effect of TMS, by being set, realizes by peripheral timing circuit.

4, advertisement device according to claim 1 is characterized in that in the timing recording playback, can manually control recording playback again.

5,, it is characterized in that timing is every regulating according to claim 1 advertisement device.

6, advertisement device according to claim 1 is characterized in that storing recording playback and the recording playback that amplifies is changeable.