CN206075817U - A kind of intelligent sound storage-playback - Google Patents

Abstract

The utility model discloses a kind of intelligent sound storage-playback, including speech recording and reproducing subsystem and control subsystem, speech recording and reproducing subsystem includes signal processing module, recording playback module and the audio amplification block being sequentially connected, the control subsystem includes single-chip microcomputer master controller, and single-chip microcomputer main controller controls recording playback module is realized to the setting of record, playback control and function.This utility model is by single-chip microcomputer to ISD4004 speech chips control realization to record, playback control and the setting of function, including playback, recording, stopping, F.F. etc., and down system is added, the circuit such as outside power amplifier, Mike, speaker, make circuit convenient, it is perfect.

Description

A kind of intelligent sound storage-playback

Technical field

This utility model is related to voice technology, more particularly to a kind of intelligent sound storage-playback.

Background technology

From the eighties in last century by now, the user of phone is in line rising, then the feature for increasing phone is then adopted Do not allow diction, and record and store with playback system except each live recordings such as general such as sales counter, meeting room, examination halls；Because of business Need recording：Order, the key content of law/medical treatment/patent service are consulted including with client.Clarification is likely to occur afterwards Dispute on and recorded：Including security/futures exchange, voice scheduling and corporate client service centre etc., governmental power is exercised Need recording and other allowed by law monitoring demands.

Digital recording system is that the voice analog signal at scene is converted into discrete digital signal, is then stored at certain Storage medium on a kind of record type, he is also a kind of mode commonly used in digital speech processing technology.Using numeral record Sound technology, has higher efficiency and automaticity, and record length is also long, and information can be long-term stored in storage medium, Carry out editing and processing simultaneously to voice messaging very convenient, quickly can search.

As the realization for realizing now digital recording system can be with using 2 kinds of modes of PC and embedded system.Work as use During PC, due to its bulky, power consumption height, cost is also high, and the stability of system cannot be protected in some cases Barrier, so various functions above and operation are realized with PC, will receive certain restriction, and embedded system volume Little, power supply is convenient, low cost, and stability is high, so extensively being used.

Utility model content

This utility model purpose is：There is provided a kind of low cost, stability high embedded intelligence phonetic storage playback system.

The technical solution of the utility model is：

A kind of intelligent sound storage-playback, including speech recording and reproducing subsystem and control subsystem, speech recording and reproducing subsystem System includes signal processing module, recording playback module and the audio amplification block being sequentially connected, and the control subsystem includes single-chip microcomputer Master controller, single-chip microcomputer main controller controls recording playback module are realized to the setting of record, playback control and function；

In signal processing module, using integrated circuit LM741 and peripheral cell composition voltage comparator, to monitor phone Voltage condition between outside line L1, L2, the positive input terminal of integrated circuit LM741 are biased to V/2 by resistance R3, R4, and V is civil power drop Running voltage after pressure, is 9V；Voltage during common dial telephone on-hook between L1, L2 is 60V；100V has been superimposed when having ringing-current The AC signal of left and right；When picking up a receiver, between L1, L2, voltage is down to 10V；Using this change in voltage, phone is determined The working condition of machine；Whenever picking up a receiver, control recording disconnects automatically, stops recording.

Preferably, described signal processing module adopts integrated circuit LM741.

Preferably, described recording playback module adopts ISD4004 speech chips.

Preferably, described audio amplification block selects LM386 three-stage amplifiers.

Preferably, also include the mike being connected with signal processing module, the power amplifier being connected with audio amplification block, raise one's voice Device.

Preferably, the single-chip microcomputer master controller adopts 51 single-chip microcomputers, 51 single-chip microcomputers to be connected with clock electrical equipment, reset circuit And down system, using 24C02 as memory device.

The utility model has the advantages that：

1. this utility model passes through single-chip microcomputer to ISD4004 speech chips control realization to record, playback control and function Setting, including playback, recording, stopping, F.F. etc., and adds down system, and the circuit such as outside power amplifier, Mike, speaker makes electricity Road is convenient, perfect.

2. this utility model can also expand the functions such as circuit alarm, power supply infrared control, protection circuit.

Description of the drawings

Below in conjunction with the accompanying drawings and embodiment is further described to this utility model：

Fig. 1 is the general construction block diagram of the new described phonetic storage playback system of this example；

Fig. 2 is the signals collecting figure of signal processing module in this example；

Fig. 3 is single chip machine controlling circuit figure in this example；

Fig. 4 is speech chip ISD4004 power supply circuits；

Fig. 5 is recording playback module hardware connection figure in this example.

Specific embodiment

In order to become apparent from illustrating this utility model, technical side of the present utility model is further described below in conjunction with embodiment Case.

As shown in figure 1, the intelligent sound storage-playback disclosed in this utility model, including speech recording and reproducing subsystem and Control subsystem two subsystems, speech recording and reproducing subsystem include signal processing module, recording playback module and the audio frequency being sequentially connected Amplification module, the control subsystem include single-chip microcomputer master controller, single-chip microcomputer main controller controls recording playback module realize to record, Playback control and function setting, including playback, recording, stopping, F.F. etc.；And add down system, outside power amplifier, mike etc. Circuit, makes system structure more perfect, using more convenient.

As shown in Fig. 2 in signal processing module, using IC 1（LM741）And peripheral cell composition voltage ratio compared with Device, to monitor the voltage condition between outside line L1, L2.Voltage during common dial telephone on-hook between L1, L2 is 60V Left and right；The AC signal of 100V or so has been superimposed when having ringing-current；When picking up a receiver, between L1, L2, voltage is down to 10V or so. Using this change in voltage, the working condition of telephone set is just can determine that out.Whenever picking up a receiver, control recording disconnects automatically, Stop recording.The positive input terminal of amplifier comparator IC1 is biased to V/2 by resistance R3, R4.V is the running voltage after civil power blood pressure lowering, Generally 9V.

As shown in figure 3, control subsystem mainly by 51 singlechip groups into control circuit, by single-chip microcomputer work, institute is necessary Clock electrical equipment, reset circuit, also including down system circuit, mainly using 24C02 as memory device.And combine software journey Sequence realizes the function of record/playback by controlling I/O mouths to reach control voice chip I SD4004.

ISD4004 series of tasks voltage 3V, 8 to the 16 minutes recording playback time of monolithic, tonequality is good, it is adaptable to mobile phone and its In his portable type electronic product.Chip adopts CMOS technology.Include agitator, anti-aliasing filter, smoothing filter, audio frequency to put The many electrical level flash storages of device, automatic silencing and high density greatly are displayed.Chip designer must have microcontroller based on all operations Control, operational order can pass through serial communication interface（SPI or Microwire）Send into.Chip adopts the direct analog quantity of many level Memory technology, each sampled value are directly stored in piece in flicker memory, therefore, it is possible to reproduce very truly, naturally language Sound, music, tone and effect sound, it is to avoid general solid recording circuit is because quantifying and compressing the quantizing noise and " metal that cause Sound ".Speech chip ISD4004 power supply circuits are as shown in Figure 4.

As shown in figure 5, in the recording playback module of voice, using single-chip microcomputer to the control realization of ISD speech chips to voice Record, put, and add the hommization function such as effect, Mike, speaker.The unique distinction of ISD speech-chips is using advanced Analogue signal is directly stored, reduction technique.Instead of the digital information memory technology in traditional speech recording and reproducing device（That is A/D Conversion and D/A conversions, digital compression, phonetic synthesis etc.）Complicated transform part.

LM386 is a kind of audio collection into effect, with oneself power consumption it is low, voltage gain is adjustable, supply voltage scope is big, The advantages of outward element is less and total harmonic distortion is little, is widely used in recorder and radio.With universal integrated transporting discharging phase Similar, it is a three-stage amplifier.When LM386 accesses circuit, pin 2 is inverting input, and 3 is homophase input and end； Pin 5 is outfan；Pin 6 and 4 is respectively power supply and ground；Pin 1 and 8 is that voltage gain sets end；In 7 He of pin during use The indirect shunt capacitance on ground, generally takes 10uF.

This utility model main task is the realization to power down process and voice service, and carries out in good time Speech Record Put.When Single-chip Controlling ISD4004 carries out playback, it is necessary to operate in strict accordance with following steps：Electricity instruction is called in first, then Postpone more than 25ms, the initial address of record/playback is then set（Every section of voice one initial address of correspondence in ISD4004）With Record command calls playback to instruct.

Above-described embodiment only to illustrate technology design of the present utility model and feature, its object is to allow and be familiar with technique People will appreciate that content of the present utility model and implement according to this, protection domain of the present utility model can not be limited with this.It is all According to the modification done by the spirit of this utility model main technical schemes, should all cover in protection domain of the present utility model Within.

Claims (5)

1. a kind of intelligent sound storage-playback, it is characterised in that：Including speech recording and reproducing subsystem and control subsystem, voice Recording playback subsystem includes signal processing module, recording playback module and the audio amplification block being sequentially connected, the control subsystem bag Single-chip microcomputer master controller is included, single-chip microcomputer main controller controls recording playback module is realized to the setting of record, playback control and function；

In signal processing module, using integrated circuit LM741 and peripheral cell composition voltage comparator, to monitor outside line Voltage condition between L1, L2, the positive input terminal of integrated circuit LM741 are biased to V/2 by resistance R3, R4, after V is civil power blood pressure lowering Running voltage, be 9V；Voltage during common dial telephone on-hook between L1, L2 is 60V；100V or so has been superimposed when having ringing-current AC signal；When picking up a receiver, between L1, L2, voltage is down to 10V；Using this change in voltage, telephone set is determined Working condition；Whenever picking up a receiver, control recording disconnects automatically, stops recording.

2. intelligent sound storage-playback according to claim 1, it is characterised in that：Described recording playback module is adopted ISD4004 speech chips.

3. intelligent sound storage-playback according to claim 1, it is characterised in that：Described audio amplification block choosing Select LM386 three-stage amplifiers.

4. intelligent sound storage-playback according to claim 1, it is characterised in that：Also include and signal processing module The mike of connection, the power amplifier being connected with audio amplification block, speaker.

5. intelligent sound storage-playback according to claim 1, it is characterised in that：The single-chip microcomputer master controller is adopted 51 single-chip microcomputers are used, 51 single-chip microcomputers are connected with clock electrical equipment, reset circuit and down system, using 24C02 as memory device.