CN201498213U - Voice record and playback device - Google Patents
Voice record and playback device Download PDFInfo
- Publication number
- CN201498213U CN201498213U CN2009202339382U CN200920233938U CN201498213U CN 201498213 U CN201498213 U CN 201498213U CN 2009202339382 U CN2009202339382 U CN 2009202339382U CN 200920233938 U CN200920233938 U CN 200920233938U CN 201498213 U CN201498213 U CN 201498213U
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- voice
- playback
- record
- playback device
- at89s52
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Abstract
A voice record and playback device comprises a power amplifier circuit (11) comprising an electrets condenser microphone (1), a triode amplifying circuit (2), an ISD 4004 (3), a 4*4 keyboard (4), an AT24C015, a nixie tube display (6), an AT89S52 (7), a reset circuit (8), a PCF8563 (9), an 80.05W loudspeaker (10) and an LM 386; the voice record and playback device adopts the CMOS(Complementary Metal-Oxide-Semiconductor Transistor)technology and includes an oscillator, an anti-aliasing filter, a smooth filter, an audio-frequency amplifier and an automatic silencing high-density multilevel flash storage array; the record playback time of a chip is 8 to 16 minutes, and the sampling frequency thereof is 4.0/5.3 /8.0 kHz; the lower the frequency is, the longer the time for record and playback is, while the quality of sounds degrades; based on the voice storage and automatic playback system, the voice record and playback device can fulfill both the voice storage function and the regular playback function.
Description
Technical field:
The utility model relates to a kind of device for keeping record of events, especially relates to the voice broadcast device for keeping record of events.
Background technology:
Along with the generation of microcontrollers such as the development of Digital Electronic Technique and single-chip microcomputer, the storage of voice is easy to realize with playing automatically to become.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 motorbus, bank and hospital all is voice storage and the application of broadcasting system automatically.
The utility model content:
The purpose of this utility model provides a kind of voice broadcast device for keeping record of events, and it can be realized the voice storage and regularly play based on voice storage and automatic playing system.
In order to solve the existing problem of background technology, the utility model is by the following technical solutions: it is made up of the power amplifier 11 that Electret condenser microphone 1, transistor amplifier 2, ISD40043,4x4 keyboard 4, AT24C015, charactron display 6, AT89S527, reset circuit 8, PCF85639,80.05W loudspeaker 10, LM386 form; Electret condenser microphone 1 is connected with transistor amplifier 2, transistor amplifier 2 is connected with ISD40043, ISD40043 is connected with AT89S527,4x4 keyboard 4, AT24C015, charactron display 6 are connected with AT89S527, reset circuit 8, PCF85639 are connected with AT89S527, AT89S527 is connected with the power amplifier 11 that LM386 forms, and 80.05W loudspeaker 10 is connected with the power amplifier 11 that LM386 forms.
Described ISD40043 adopts the CMOS technology, include the many electrical level flash storages of oscillator, anti-aliasing filter, smoothing filter, note amplifier, automatic silencing and high density array, the monolithic recording playback time is 8～16min, sample frequency can be 4.0/5.3/*/8.0kHz, frequency is low more, the recording playback time is long more, and tonequality then descends to some extent.
The utlity model has following beneficial effect: can realize the voice storage and regularly play based on voice storage and automatic playing system.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
Embodiment:
Referring to Fig. 1, this embodiment by the following technical solutions: it is made up of the power amplifier 11 that Electret condenser microphone 1, transistor amplifier 2, ISD40043,4x4 keyboard 4, AT24C015, charactron display 6, AT89S527, reset circuit 8, PCF85639,80.05W loudspeaker 10, LM386 form; Electret condenser microphone 1 is connected with transistor amplifier 2, transistor amplifier 2 is connected with ISD40043, ISD40043 is connected with AT89S527,4x4 keyboard 4, AT24C015, charactron display 6 are connected with AT89S527, reset circuit 8, PCF85639 are connected with AT89S527, AT89S527 is connected with the power amplifier 11 that LM386 forms, and 80.05W loudspeaker 10 is connected with the power amplifier 11 that LM386 forms.
Described ISD40043 adopts the CMOS technology, include the many electrical level flash storages of oscillator, anti-aliasing filter, smoothing filter, note amplifier, automatic silencing and high density array, the monolithic recording playback time is 8～16min, sample frequency can be 4.0/5.3/*/8.0kHz, frequency is low more, the recording playback time is long more, and tonequality then descends to some extent.
This embodiment can realize the voice storage and regularly play based on voice storage and automatic playing system.
Claims (1)
1. voice broadcast device for keeping record of events is characterized in that it is made up of the power amplifier (11) that Electret condenser microphone (1), transistor amplifier (2), ISD4004 (3), 4x4 keyboard (4), AT24C015, charactron display (6), AT89S52 (7), reset circuit (8), PCF8563 (9), 80.05W loudspeaker (10), LM386 form; Electret condenser microphone (1) is connected with transistor amplifier (2), transistor amplifier (2) is connected with ISD4004 () 3, ISD4004 (3) is connected with AT89S52 (7), 4x4 keyboard (4), AT24C01 (5), charactron display (6) are connected with AT89S52 (7), reset circuit (8), PCF8563 (9) are connected with AT89S52 (7), AT89S52 (7) is connected with the power amplifier (11) that LM38 (6) forms, and 80.05W loudspeaker (10) is connected with the power amplifier (11) that LM38 (6) forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202339382U CN201498213U (en) | 2009-07-20 | 2009-07-20 | Voice record and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202339382U CN201498213U (en) | 2009-07-20 | 2009-07-20 | Voice record and playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201498213U true CN201498213U (en) | 2010-06-02 |
Family
ID=42441415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202339382U Expired - Fee Related CN201498213U (en) | 2009-07-20 | 2009-07-20 | Voice record and playback device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201498213U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411981A (en) * | 2011-11-15 | 2012-04-11 | 北京百纳威尔科技有限公司 | Mobile terminal and voice recording and displaying method |
-
2009
- 2009-07-20 CN CN2009202339382U patent/CN201498213U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102411981A (en) * | 2011-11-15 | 2012-04-11 | 北京百纳威尔科技有限公司 | Mobile terminal and voice recording and displaying method |
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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: 20100602 Termination date: 20100720 |