CN2620317Y

CN2620317Y - All digital repeater device

Info

Publication number: CN2620317Y
Application number: CN 03225862
Authority: CN
Inventors: 刘达宾
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-05-01
Filing date: 2003-05-01
Publication date: 2004-06-09
Anticipated expiration: 2013-05-01

Abstract

Disclosed is a device used on a full-digital repeater, comprising a central controlling unit (1), a keyboard (4) and a LCD display (5) that are respectively connected with the central controlling unit (1), an information memory (2) that is connected with the central controlling unit (1) in the bi-direction, a microphone (7) that is used to input the voice and a loud speaker (6) that is used to output the voice. It is characterized in that: the device used on a full-digital repeater runs according to the software programs, and also comprises a processor (3) for speech synthesis and a recording processor (8); the processor (3) for speech synthesis and the recording processor (8) are respectively connected with the central controlling unit (1) in the bi-direction; the recording processor (8) is connected with the microphone (7); the loud speaker (6) is respectively connected with the processor (3) for speech synthesis and the recording processor (8).As the utility model adopts the technologies of speech synthesis and speech compression, the full-digital of the repeater is realized. The utility model has characteristics of small size, less power consuming, convenient using, stability, reliability and long servile life. With the utility model, the user can obtain a great deal of study materials from the PC and the internet by means of a communication port arranged inside of the utility model without the mediums of the tape and the CD prepared.

Description

Full digital code language repeater device

Technical field

The utility model relates to electronic technology field, and particularly the employing speech synthesis technique has re-reading reaching with the full digital code language repeater device of reading comparing function.

Background technology

Present language playback device device uses tape movement or CD player core as the data storage device, and this language repeater device is big, when complex structure, cost height, operating cost, and easy break-down, has influenced further developing of this language repeater device.And the existing digital recording playback machine that adopts digital storer to come data on file, use modulus and analog-digital chip, the analog signal conversion that microphone can be imported be in the digital signal record machine or the digital signal that will be stored in the machine plays back, volume is little, easy to use, but does not have the re-reading learning functionality of language repeater device.

Summary of the invention

The purpose of this utility model is to overcome the above-mentioned deficiency of prior art, and proposes a kind of full digital code language repeater device, and it adopts leading at present phonetic synthesis and voice compression technique, has realized the total digitalization of language repeater device.Have that volume is little, little power consumption, easy to use, reliable and stable, characteristics such as the life-span is long.Do not need to be equipped with in addition media such as tape or CD CD during use, and can directly obtain a large amount of free learning materials from PC and internet by PORT COM.

The purpose of this utility model can reach by taking following technical measures:

Design, make a kind of full digital code language repeater device, comprise central control unit and keyboard that is attached thereto respectively and LCD display, and the information-storing device of two-way connection with it, also be useful on the microphone of phonetic entry and be used for the loudspeaker of voice output; It is characterized in that: described full digital code language repeater device moves according to software program P, and comprises phonetic synthesis processor and recording processor; Described phonetic synthesis processor and recording processor are connected with central control unit is two-way respectively; Described recording processor is connected with microphone; Described loudspeaker is connected with phonetic synthesis processor and recording processor respectively.

Description of drawings

Fig. 1 is the principle of work block diagram of the utility model full digital code language repeater device;

Fig. 2 is circuit diagram I of the present utility model;

Fig. 3 is circuit diagram II of the present utility model;

Fig. 4 is five kinds of duty process flow diagrams of software program P of the present utility model;

Fig. 4-A is a Recording Process

Fig. 4-B is a replayed section

Fig. 4-C is that phonetic synthesis is broadcasted process

Fig. 4-D is re-reading process

Fig. 4-E is a comparison process

Embodiment

Below in conjunction with accompanying drawing in detail embodiment of the present utility model is described in detail.

A kind of full digital code language repeater device, the keyboard 4 and the LCD display 5 that comprise central control unit 1 and be attached thereto respectively, and the information-storing device 2 of two-way connection with it also are useful on the microphone 7 of phonetic entry and are used for the loudspeaker 6 of voice output; It is characterized in that: described full digital code language repeater device moves according to software program P, and comprises phonetic synthesis processor 3 and recording processor 8; Described phonetic synthesis processor 3 and the recording processor 8 respectively with 1 two-way connection of central control unit; Described recording processor 8 is connected with microphone 7; Described loudspeaker 6 is connected with phonetic synthesis processor 3 and recording processor 8 respectively.

Described central control unit 1 is responsible for the coordinate operation of total system, comprises and accepts keyboard 4 data, accepts and store the file data of PC, display working condition, control recording and phonetic synthesis processor;

Described information-storing device 2 is used to store prefabricated numeral voice file;

Described keyboard 4 user's select operating modes, finish operations;

Described LCD display 5 output optical signals, the use interface of providing convenience;

Described microphone 7 carries out the voice audio signals input and amplifies, and send the recording processor with speech data;

The voice signal that described loudspeaker 6 outputs are synthesized or recorded;

Described phonetic synthesis processor 3 accept central control unit 1 output steering order and speech data, the line data of going forward side by side decoding, D-A conversion;

The sound signal of 8 pairs of microphones of described recording processor, 7 inputs is carried out digitized processing, and deposits among the interior RAM of sheet.

Under normal waiting status, central control unit 1 enters different duty patterns according to the user in the selection of keyboard 4 inputs.Full digital code language repeater device flow process according to software program P in the different operating state is carried out work; LCD display 5 can show all status informations.

During recording, voice messaging----〉microphone 7----〉recording processor 8----〉carry out producing data after the speech processes, deposit the built-in random access memory ram of recording processor 8 in;

During playback, the data among the RAM----〉recording processor 8----〉decoding back D-A conversion----〉loudspeaker 6 broadcasts;

When phonetic synthesis is broadcasted, the data in the information-storing device 2----〉central control unit----〉phonetic synthesis processor 3----decode and D-A change call out----loudspeaker 6 plays.

Described information-storing device 2 is flash memory FlashROM.

Described phonetic synthesis processor 3 comprises decoder module and D-A digital-to-analogue conversion module again.Central control unit 1 will read in and be stored in information-storing device 2 by specific coding mode coded data file such as mpeg format file by PORT COM from PC, phonetic synthesis processor 3 is subjected to central control unit 1 control, carry out addressing, adjusting, play, stop, work such as speed change, its built-in decoder module can be decoded to data, and play by loudspeaker 6 D-A conversion back.

The decoding program of phonetic synthesis processor 3 decoder modules can be upgraded.Speech synthesis technique is a kind ofly natural sound is changed into data to be reduced into the technology of natural sound again after decoding.This technology is widely used.The common MP3 player of people for example, e-education book, child's learning machine or the like.The key core of this technology is the algorithm of encoding and decoding.Good algorithm can be little with minimum storage space storage maximum speech data and degree of distortion.Adopt the phonetic synthesis processor of scalable decoding program, make the utility model full digital code language repeater device have the leeway of stronger upgrading expansion, can adapt to making constant progress of current speech synthesis technique better.

Described recording processor 8 is built-in with random access memory ram, and has A-D, D-A conversion module.During recording, voice signal is converted into the speech simulation electric signal from microphone 7 input, and is exaggerated and delivers to recording processor 8 places again and carry out the A-D conversion, and the voice digital signal after the conversion is stored on the built-in random access memory ram of recording processor 8; During playback, voice digital signal carries out the D-A conversion by recording processor 8, and the simulating signal after the conversion is play by loudspeaker 6.

Below being an application example of the utility model full digital code language repeater device---the band contrast is with the digital language playback device device of reading.

This product adopts the built-in FlashROM of a 64Mbit, as adopting the compress technique of 2Kbit/s, can store about 8 hours learning stuffs such as English Conversation.Central controller is 8 common single-chip microcomputers 8051; Phonetic synthesis processor adopting SC691; Recording processor adopting SPCR series processors can be recorded 20 seconds voice.

Its function selecting operation is as follows: this product has " Mode " key, can carry out the switching of different mode, and open state is normal holding state---play---re-reading----〉contrast---download---normal holding state;

Its play operation is as follows: can adjust the reference position of broadcast, the word speed and the volume of broadcast at any time the broadcast state user, also can suspend broadcast, the language repeater device can be noted the position that stops, and does not lose after the shutdown, treats can then play after the start next time;

Its re-reading operation is as follows: the user need at first will determine re-reading start-stop position, adopts " Mark " key to select and to preserve; Time length between the start-stop position without limits.The process of this broadcast be can be between two signs repeat playing, after button stops or reaching default multiplicity, stop automatically; The user also can adjust the word speed and the volume of broadcast at any time under this state,

Its contrast operation is as follows: contrast is to provide an approach with own pronunciation and the contrast of former sound to the user, is primarily aimed at some the very difficult speech read or the study of sentence.At first want the position of clear and definite these difficult sentences (speech), press your pronunciation of beginning typing behind " REC " key; Owing to adopted the internal RAM of recording processor,, be generally 10-20 seconds so the time can limit to some extent; Press " Play " key, can play former sound earlier, and then play user's pronunciation again.

Attached main components and parts inventory list:

Sequence number number element model name

1 1 U1 AT89LV51

2 1 U2 LCD1621

3 1 U3 74LV08

4 2 U6，U4 74LVQ244

5 1 U5 FLASH?K9F6408W0A

6 1 U7 MAX232

7 1 U8 SC691

8 1 U9 SPCRXX

Claims

1, a kind of full digital code language repeater device, keyboard (4) that comprises central control unit (1) and be attached thereto respectively and LCD display (5), and the information-storing device of two-way connection with it (2), also be useful on the microphone (7) of phonetic entry and be used for the loudspeaker (6) of voice output; It is characterized in that:

Described full digital code language repeater device moves according to software program P, and comprises phonetic synthesis processor (3) and recording processor (8);

Described phonetic synthesis processor (3) and the recording processor (8) respectively with two-way connection of central control unit (1); Described recording processor (8) is connected with microphone (7); Described loudspeaker (6) is connected with phonetic synthesis processor (3) and recording processor (8) respectively.

2, full digital code language repeater device according to claim 1 is characterized in that:

Described information-storing device (2) is flash memory FlashROM.

3, full digital code language repeater device according to claim 1 and 2 is characterized in that:

Described phonetic synthesis processor (3) comprises decoder module and D-A digital-to-analogue conversion module again.

4, full digital code language repeater device according to claim 3 is characterized in that:

Described recording processor (8) is built-in with random access memory ram, and has A-D, D-A conversion module.