CN201812282U

CN201812282U - Digital keyboard input type speech sound generating device

Info

Publication number: CN201812282U
Application number: CN2010202856470U
Authority: CN
Inventors: 臧广树
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-09
Filing date: 2010-08-09
Publication date: 2011-04-27
Anticipated expiration: 2020-08-09

Abstract

The utility model relates to a sound generating device capable of directly outputting speech by manually tapping a digital keyboard. The device comprises a speech recording and playing circuit used for recording and outputting speech syllables of Chinese characters, a small digital keyboard used for inputting digital speech codes, a single chip computer used for processing the digital speech codes input by the small digital keyboard, controlling the speech recording and playing circuit to pronounce corresponding Chinese character syllables and controlling the display of the input Chinese characters, a power amplifying circuit used for magnifying the power of the Chinese character syllables pronounced by the speech recording and playing circuit, and a loudspeaker used for outputting Chinese character speeches. The device can directly pronounce Chinese characters through tapping in the digital codes without the need of converting the codes by using a computer and speech aloud reading software, help people who cannot speak to pronounce and speak, expand to speech alarm and speech prompt in the industry field, improve the automation application level and the scientific and technological content, be achieved flexibly, simply and conveniently, achieve a large number of speech prompt, and further achieve touch typing to increase the input speed after learning.

Description

Numeric keypad input type sound generating mechanism

Technical field

The utility model relates to and strikes the sound-producing device that numeric keypad is directly exported voice with the hand.

Background technology

At present, input method such as the Five-stroke Method and phonetic can demonstrate Chinese character by numeric keypad input back on computer monitor, the Chinese character of being imported must be loaded onto massage voice reading software the Chinese character of squeezing into computer is sounded as exporting voice, also do not have at present can be directly the software and the device of pronunciation by directly sending word behind the digital keyboard input character, directly send the pronunciation of word exactly after the typewriting, and the pronunciation work of having omitted massage voice reading software, even the participation work of separating computer, directly on device, squeeze into numerical code and just can send the voice that to say, and do not have the word selection step of sounding again.

Summary of the invention

The purpose of this utility model provides a kind ofly can directly not squeeze into the numeric keypad input type sound generating mechanism that numerical code is sent the pronunciation of Chinese character by the conversion of computer and massage voice reading software.

Technical solution of the present utility model is: it comprises the audio record circuit that is used for typing and output phonetic Chinese character syllable, the numeric keypad that is used for the input digit phonetic code, digital speech sign indicating number to the numeric keypad input is handled, the control audio record circuit sends the single-chip microcomputer of corresponding Chinese character syllable and the control demonstration Chinese character of importing, the Chinese character syllable that audio record circuit is sent carries out the power amplifier of power amplification and the loudspeaker of output phonetic Chinese character, audio record circuit links to each other respectively with power amplifier with single-chip microcomputer, power amplifier links to each other with loudspeaker, and numeric keypad links to each other with single-chip microcomputer.

Technique effect of the present utility model is: it can directly not squeeze into the pronunciation that numerical code is sent Chinese character by the conversion of computer and massage voice reading software, can help speechless people to send voice speaks, each word is squeezed into four of four numeral formations by keyboard and is counted the pronunciation that phonetic codes send this word, this device can expand to industrial circle audio alert and voice suggestion, can improve automation application level and scientific and technological content, implement flexibly, convenient simply again, and can realize a large amount of voice suggestions, can realize also that through this device of study back touch system accelerates input speed.

Description of drawings

Fig. 1 is the utility model embodiment theory diagram;

Fig. 2 is the utility model embodiment circuit theory diagrams.

Embodiment

As shown in Figure 1, it comprises the audio record circuit that is used for typing and output phonetic Chinese character syllable, the numeric keypad that is used for the input digit phonetic code, digital speech sign indicating number to the numeric keypad input is handled, the control audio record circuit sends the single-chip microcomputer of corresponding Chinese character syllable and the control demonstration Chinese character of importing, the Chinese character syllable that audio record circuit is sent carries out the power amplifier of power amplification and the loudspeaker of output phonetic Chinese character, audio record circuit links to each other respectively with power amplifier with single-chip microcomputer, power amplifier links to each other with loudspeaker, and numeric keypad links to each other with single-chip microcomputer.

It also comprises the LCD and the power circuit of the Chinese character that is used to show institute's input digit phonetic code representative, and LCD links to each other with single-chip microcomputer, and power circuit links to each other respectively with audio record circuit, single-chip microcomputer, power amplifier and LCD.

As shown in Figure 2, single-chip microcomputer includes U1 single-chip microcomputer integrated circuit AT 89C52, and single-chip microcomputer is 8031 kernels, and 8K can erasable repeatedly program storage, 32 I/O mouths, and 5V work, also the single-chip microcomputer of available other compatible model substitutes.

Audio record circuit includes U2 speech recording and reproducing sound integrated circuit ISD4004.

Power amplifier includes U3 audio frequency power amplifier integrated circuit LM386, and it is a power amplifier, and 0,5W drives toy trumpet.

LCD includes U4 Chinese fonts lcd module JX-12232F, shows the numeral and the voice messaging of input.

Numeric keypad is the commercially available finished product of a U5 Qing Hua Ziguang numeric keypad, and seven lead-in wires weld again.

Loudspeaker is YS, 8 Europe, 0.5 watt of toy trumpet, the effect of sounding.

STOP, button is pressed " STOP " key for resetting.

LED1, red light emitting diodes is given isd4004 integrated circuit supply of electrical energy, and is played the effect that is depressured to 3v, because of isd4004 needs the 3v power supply.

XT1,12M crystal oscillator, AT89C52 single-chip microcomputer clock oscillator.

C1,22uf 16V electric capacity, AT89C52 single-chip microcomputer reset and use capacitor.

C2,4.7uf 16V electric capacity, LM386 power amplifier integrate circuit input block condenser.

C3,220uf 16V electric capacity, LM386 power amplifier integrate circuit output block condenser.

C4,1uf 16V electric capacity, automatic silencing capacitor during the ISD4004 recording.

C5,30pf ceramic disc capacitor, AT89C52 single-chip microcomputer clock oscillator anti-interference condenser.

C6,30pf ceramic disc capacitor, AT89C52 single-chip microcomputer clock oscillator anti-interference condenser.

C7,220uf 25V electric capacity, power filtering capacitor, burning voltage effect.

R1,4.7K resistance, AT89C52 single-chip microcomputer on-chip memory selects to connect high level.

R2,8.2K resistance, AT89C52 single-chip microcomputer reset and use discharge resistance.

R3,4.7K adjustable resistance, audio frequency power amplifier integrated circuit LM386 phonation volume regulator potentiometer.R4,10K adjustable resistance, JX-12232F Chinese fonts lcd module contrast adjustment potentiometer.

In Fig. 2, import the pronunciation of finding out corresponding " greatly " word after being decoded by the program in the U1 AT89C52 single-chip microcomputer in four pronunciation yardage words (as the pronunciation sign indicating number of 6249 " greatly " word) back in U2 ISD4004 speech recording and reproducing integrated circuit plays out " greatly " word through YS 8 Europe internal resistance toy trumpets sound by U5 numeral small digital keyboard.The triliteral pronunciation of input (hello) is back continuously just can play out (hello) triliteral voice by (#) key in the U5 numeric keypad in YS 8 Europe internal resistance toy trumpets.Just can delete the phonetic code of input error by (＜＜) key in the U5 numeric keypad.

U2 is an ISD4004 speech recording and reproducing integrated circuit, and (ISD4004 series integrated circuit operating voltage 3V, 8 to 16 minutes monolithic recording playback time, tonequality is good, is applicable in mobile phone and other portable type electronic products.Chip adopts the CMOS technology, includes the many electrical level flash storages of oscillator, anti-aliasing filter, smoothing filter, note amplifier, automatic silencing and high density display.Chip design is based on all operations must be by microprocessor controls, and operational order can be sent into by serial communication interface (SPI or Microwire).Chip adopts many level direct modeling amount memory technology, each sampled value directly is stored in the memory that glimmers in the sheet, therefore can be very truly, realize voice, music, tone and effect sound more naturally, avoided general solid recording circuit because of the quantizing noise and " metallic sound " that quantize and compression causes.Sample frequency can be 4,0, and 5,3,6,4,8,0kHz, frequency is low more, and the recording playback time is long more, tonequality then descends to some extent, the sheet internal information is stored in the flicker memory, can preserve under powering-off state 100 years (representative value), and it is the speech recording and reproducing integrated circuit that can divide 2400 sections isd4004-8 type in eight minutes that this circuit is selected isd4004).

Pin is described:

Power supply: (VCCA, VCCD) for making the noise minimum, the analog-and digital-circuit of chip uses different power buss, and guide to respectively on the different pins of outer package, analog-and digital-power end is preferably distinguished cabling, linking to each other near the feeder ear place as far as possible, and decoupling capacitor should be tried one's best near device.

Ground wire: (VSSA, VSSD) the analog-and digital-circuit of chip internal also uses different ground wires.

Audio frequency output (AUD OUT) provides audio frequency output, can drive the load of 5K Ω.

Sheet choosing (SS) this end is low, promptly sends instruction to this ISD4004 chip, is high level between two instructions.

Serial input (MOSI) this end is a serial input terminal, and master controller should half period be put into local terminal with data before the serial clock rising edge, for the ISD input.

The serial output terminal of serial output (MISO) ISD.When ISD did not choose, local terminal was high-impedance state.

Automatic silencing (AMCAP) drops to a certain threshold value of inner setting when following when the recorded audio signals level, and the automatic silencing function makes signal weak, the noise when helping like this to support no signal (quiet).Usually local terminal connects the electric capacity of 1uF over the ground, constitutes the part of internal signal level peak detection circuit.The peak level that detects and the threshold value of inner setting are made comparisons, the overturn point of decision automatic silencing function.During large-signal, the automatic silencing circuit is unattenuated, decay 6dB when quiet.The electric capacity of 1uF also influences the response speed of automatic silencing circuit to signal amplitude.This termination VCCA then forbids automatic silencing.

There is drop down element external clock (XCLK) local terminal inside.The sampling clock of chip internal is adjustment before dispatching from the factory, and error is in+1%.The business level chip is in whole temperature and voltage range, and frequency change is in+2.25%.The technical grade chip is in whole temperature and voltage range, and frequency change is in-6/+4%, and this moment, stabilized voltage supply was used in suggestion.If require more high precision, can import external clock (listed) from local terminal as preceding table.Owing to inner anti-ly obscure and smoothing filter is set, so the clock frequency of above-mentioned recommendation should not change.The independent of duty cycle of input clock is critical, because of at first having carried out frequency division in inside.When not external ground clock, this end must ground connection.

The input end of clock of serial clock (SCLK) ISD is produced by master controller, is used for the data transmission of synchronous MOSI and MISO.Data are latched into ISD at the SCLK rising edge, shift out ISD at negative edge.

Interrupting (INT) local terminal is open-drain output.When ISD detected EOM or OVF in any operation (comprising F.F.), the local terminal step-down also kept.Interruption status is removed when the next SPI cycle begins.The also available RINT instruction of interruption status is read.The record of OVF sign----indication ISD, put the not tail that operation has arrived storer.When EOM sign----only detected inner EOM sign in playback, this mode bit just put 1.

12232F is a kind of built-in 8192 16*16 point Chinese character basies and 128 16*8 point ascii character-set graphic dot matrix LCD, and it mainly is made up of line driver/row driver and 128 * 32 full lattice lcd display.Can finish graphic presentation, also can show 7.5 * 2 (16 * 16 dot matrix) Chinese characters, adopt parallel with the outer CPU interface or serial mode control.

Important technological parameters and performance:

1), power supply: VDD:+3,0～+ 5.5V.(power supply is lower than 4.0 volts of LED-backlit needs power supply in addition)

2), displaying contents: 122 (row) * 32 (OK) points.

3), full screen dot matrix.

4), 2M ROM (CGROM) provides 8192 Chinese characters (16 * 16 dot matrix) altogether.

5), 16K ROM(HCGROM) provide 128 characters (16 * 8 dot matrix) altogether.

6), 2MHZ frequency.

7), working temperature: 0 ℃～+ 60 ℃, storing temperature :-20 ℃～+ 70 ℃

Serial interface pin signal

Table 1

Number of pins	Title	LEVER	Function
					1	GND	0V	Power supply ground
2	VCC	+5V	Power supply is (3.0V～5.5V) just
				3	Vlcd	-	Contrast is adjusted
4	CLK	H/L	Serial synchronous clock: read the SID data during rising edge
				5	SID	H/L	The serial data input end
6	CS	H/L	Module sheet choosing end, high level is effective

Claims

1. numeric keypad input type sound generating mechanism, it is characterized in that: it comprises the audio record circuit that is used for typing and output phonetic Chinese character syllable, the numeric keypad that is used for the input digit phonetic code, digital speech sign indicating number to the numeric keypad input is handled, the control audio record circuit sends the single-chip microcomputer of corresponding Chinese character syllable and the control demonstration Chinese character of importing, the Chinese character syllable that audio record circuit is sent carries out the power amplifier of power amplification and the loudspeaker of output phonetic Chinese character, audio record circuit links to each other respectively with power amplifier with single-chip microcomputer, power amplifier links to each other with loudspeaker, and numeric keypad links to each other with single-chip microcomputer.

2. numeric keypad input type sound generating mechanism as claimed in claim 1, it is characterized in that it also comprises the LCD and the power circuit of the Chinese character that is used to show institute's input digit phonetic code representative, LCD links to each other with single-chip microcomputer, and power circuit links to each other respectively with audio record circuit, single-chip microcomputer, power amplifier and LCD.

3. numeric keypad input type sound generating mechanism as claimed in claim 1 is characterized in that described single-chip microcomputer includes single-chip microcomputer integrated circuit AT 89C52.

4. numeric keypad input type sound generating mechanism as claimed in claim 1 is characterized in that described audio record circuit includes speech recording and reproducing sound integrated circuit ISD4004.

5. numeric keypad input type sound generating mechanism as claimed in claim 1 is characterized in that described power amplifier includes audio frequency power amplifier integrated circuit LM386.

6. numeric keypad input type sound generating mechanism as claimed in claim 1 is characterized in that described loudspeaker is 8 Europe, 0.5 watt of toy trumpet.

7. numeric keypad input type sound generating mechanism as claimed in claim 1 is characterized in that described LCD includes Chinese fonts lcd module JX-12232F.