CN201479355U - Voice broadcasting device - Google Patents
Voice broadcasting device Download PDFInfo
- Publication number
- CN201479355U CN201479355U CN2009201962018U CN200920196201U CN201479355U CN 201479355 U CN201479355 U CN 201479355U CN 2009201962018 U CN2009201962018 U CN 2009201962018U CN 200920196201 U CN200920196201 U CN 200920196201U CN 201479355 U CN201479355 U CN 201479355U
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- China
- Prior art keywords
- module
- playback
- voice
- recording
- pickup
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Abstract
A voice broadcasting device comprises a pickup module, a recording module, a master control module, a playback module and a loudspeaker; the master control module is respectively connected with the pickup module, the recording module, and the playback module; the playback module is connected with the loudspeaker; the master control module controls the recording module to store the data of the pickup module, outputs the voice data via the playback module in a D/A conversion way according to the requirement and amplifies the voice through the loudspeaker.
Description
Affiliated technical field
The utility model relates to a kind of electronic installation, especially sound broadcasting device.
Background technology
Voice storage at present is widely used in the middle of the daily life with automatic playing system.The system etc. that waits in line of the voice station reporting instrument on the bus, bank and hospital all is voice storages and the application of broadcasting system automatically, but traditional voice broadcast all is in the same place with the system integration, costs an arm and a leg, can not separate utility.
Summary of the invention
In order to overcome traditional voice broadcast drawback, the utility model provides a kind of sound broadcasting device, based on voice storage and automatic playing system.This device has been realized the voice storage well and has been play automatically, and the system that can be independent of uses separately.
The technical scheme that its technical problem that solves the utility model adopts is: comprise pickup module, recording module, main control module, playback module, loud speaker; It is characterized in that, main control module is connected with pickup module, recording module, playback module respectively, playback module also is connected with loud speaker, main control module is by the preservation of control recording module realization to the data of pickup module, under the situation of needs, speech data is exported by the playback module digital-to-analogue conversion, carried out voice by loud speaker and amplify.
The beneficial effects of the utility model are, characteristics such as that system has is simple in structure, reliability is high, cost is low, can use separately.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a theory diagram of the present utility model; Fig. 2 is an electric structure chart of the present utility model.
Among the figure, 1. pickup module, 2. recording module, 3. main control module, 4. playback module, 5. loud speaker.
Embodiment
In Fig. 1, a kind of sound broadcasting device comprises pickup module 1, recording module 2, main control module 3, playback module 4, loud speaker 5; Main control module 3 is connected with pickup module 1, recording module 2, playback module 4 respectively, playback module 4 also is connected with loud speaker 5, the preservation that main control module 3 is realized the data of pickup module 1 by control recording module 2, under the situation of needs, speech data is exported by playback module 4 digital-to-analogue conversions, carried out voice by loud speaker 5 and amplify.
In Fig. 2, voice signal is very faint through the signal of telecommunication that Electret condenser microphone is converted into, and needs before sending into speech chip through amplifying.The purpose of doing like this is in order to improve the signal to noise ratio of signal, to reach the purpose of better inhibition noise.Because what acoustical-electrical transducer spare used is Electret condenser microphone, the level amplifying circuit uses triode can meet the demands as amplifying device after the institute.Very faint from the voice signal of speech chip output, can not directly drive loud speaker, so will between speech chip and loud speaker, add a power amplification circuit.Power amplification circuit uses the audio-frequency power amplifier LM386 of National Semiconductor's production and cooperates a little capacitance resistance to constitute.The amplification effect of this power amplifier is good, and noise is little.The ISD4004 chip adopts the CMOS technology, includes the many electrical level flash storages of oscillator, anti-aliasing filter, smoothing filter, audio frequency amplifier, automatic silencing and high density array.Pin comprise power supply, clock, voice signal analog input/output, with several parts of MCU interface (SPI interface).Chip adopts many level direct modeling amount memory technology, and each sampled value directly is stored in the sheet in the flicker memory, therefore can be very truly, realize voice more naturally.The ISD4004 series monolithic recording playback time is 8～16min, and sample frequency can be 4.0/5.3/6.4/8.0kHz, and frequency is low more, and the recording playback time is long more, and tonequality then descends to some extent.Chip design must be by microprocessor controls based on all operations, and operational order can be sent into by serial communication interface (SPI or Mi-crowire).Because numerous advantages of ISD4004, the design just adopts it as recording playback sound device.The external clock chip PCF8563 of system, matrix keyboard LED show and E2PROM AT24C01.In order to improve voice quality, improve the signal to noise ratio of input during recording, therefore the input in system adopts the single-ended input of triode (9014) amplifying circuit, and the output of system amplifies output rear drive loud speaker through audio-frequency power amplifier LM386.
Claims (1)
1. sound broadcasting device, comprise pickup module (1), recording module (2), main control module (3), playback module (4), loud speaker (5), it is characterized in that, main control module (3) is connected with pickup module (1), recording module (2), playback module (4) respectively, and playback module (4) also is connected with loud speaker (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201962018U CN201479355U (en) | 2009-09-10 | 2009-09-10 | Voice broadcasting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201962018U CN201479355U (en) | 2009-09-10 | 2009-09-10 | Voice broadcasting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201479355U true CN201479355U (en) | 2010-05-19 |
Family
ID=42415610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201962018U Expired - Fee Related CN201479355U (en) | 2009-09-10 | 2009-09-10 | Voice broadcasting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201479355U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540075A (en) * | 2014-12-26 | 2015-04-22 | 苏州市职业大学 | Voice circuit system |
-
2009
- 2009-09-10 CN CN2009201962018U patent/CN201479355U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540075A (en) * | 2014-12-26 | 2015-04-22 | 苏州市职业大学 | Voice circuit system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20100910 |