CN1103191A - A device for analog-to-acoustic conversion and its implementation method - Google Patents

Abstract

The invention relates to a language and sound learning device using optical code/bar code as input medium and its realizing method, characterized in that it is composed of a decoder, address mark converter, memory, clock generator, selection switch, memory controller, digital-to-analog converter and a sound generating device. The method is realized by setting a corresponding optical code bar code for each word, sentence, animal or music, and storing the digital codes in a memory. Then the digitalized sound information stored in the memory is taken out and is played by the sound generating device after digital-to-analog conversion.

Description

The invention relates to a language and sound learning device and method using an optical code/bar code as an input medium.

There are many kinds of language and sound learning devices on the market, such as the speak & spell, speak & math and speak & read of Texas Instruments, etc., which use the screen to display the questions to the user, and the user can use the keyboard to type Answer, the above-mentioned product shows again whether this answer is correct or not, and can also use electronically synthesized voice to communicate with users to assist them in learning. This kind of device is in the form of keyboard input, which is still not very convenient and simple for younger users, so someone proposes to use an optical code reader, such as a bar code scanner (bar code reader), to identify the required code. Spoken sentence, and this sentence is spoken by an electronic speech synthesizer, such as U.S. Patent No. 4,337, No. 375, "Man-ually Controllable Date Reading Apparatus for Speech Synthesizers proposed by Freeman on June 29, 1982 " is a typical example. It uses optical codes to represent speech features and information required by various speech synthesizers, such as: phonemes, speech features, pitch changes, durations, syllables, etc., use the optical code reader to read the above information, and then store it in the buffer In the device register, the speech synthesizer receives the information and makes a sound at last; U.S. Patent No. 4,375,058, "De-vice for Reading a Printed Code and for" proposed by Bouma et al on February 22, 1983 "Converting this Code into an Audio Signal" is also to use the optical code reader to read the optical code and store it in the intermediate memory, and then directly output this information to the speech synthesizer to generate a sound signal, or store it in the intermediate memory The information is regarded as the memory address of the object (Object), and the memory provides information to the speech synthesizer to generate a sound signal. The information received by these speech synthesizers is still information such as phonemes, which is artificially synthesized to generate sound. In addition, there are also several electronic learning aids that use synthetic voice and optical code input methods, such as Dittakavi et al. U.S. Patent No. 4,457,719, which provides the functions of arrangement and pinyin practice, Dittakavi et al. U.S. Patent No. 4,466 , No. 801, which can repeat the elements of non-language (nonspoken) sounds to produce longer sound effects from short codes; Thompson's U.S. Patent No. 4,505,682 can provide matching and comparison exercises; U.S. Patent No. 4,549,867 by Dittakavi et al. provides a series of optical code information to be stored in a serial register and played out continuously. In addition, it also provides the reverse function of the above functions, that is, a series of random sequences (radom sequence) voice, and then ask the user to find the combination in the same order among multiple groups of optical codes, and use the optical code reader to scan the corresponding optical codes into the learning aid one by one, and the learning aid will use synthetic voice Inform the user whether the input is correct or not. The above-mentioned traditional technology uses a keyboard or an optical code reader as an input device, and plays sounds in a speech synthesis manner to enhance the learning effect. Although the synthesized speech can make people understand its meaning, its pronunciation is not as authentic as human pronunciation. The distance is not suitable for students who want to learn the pronunciation of pure language, so the best effect can be achieved by doing language learning in real language; U.S. Patent No. 5,059,126, issued by Kimball in 1991 The "Sound Association and Learning System" proposed on October 22, 2010 is to play with real voice, but this invention uses Compact Disc (CD) to store real voice information, and uses a CD player to play these information, because CD The player itself is afraid of vibration, especially when children are using it, it is more likely to produce vibration, which will make the content of the CD play incorrectly, and even damage the CD player. In addition, the above-mentioned traditional technology of using an optical code reader as an input device and playing sound by speech synthesis has another disadvantage, that is, the length of the optical code will change with the length of the voice and other information. For sentences that are too long , the optical code will be too long, even exceeding the length of one line, and must be printed on a new line, making it inconvenient to use.

The object of the present invention is to propose a language and sound learning device and its realization method that are made up of optical code reader, converter, memory, controller, selection switch, clock signal generator, digital-to-analog converter and sounding device, It uses optical codes/barcodes as the medium, and each optical code/barcode has a fixed length and corresponds to a word, sentence or pattern. The user can use the optical code reader to read the optical code/barcode, and then recognize it by the device, and then play the corresponding real voice, which can be seen and heard clearly at the same time, so as to obtain better The language and sound learning effect of the invention solves the deficiencies of the prior art.

The technical scheme adopted in the present invention is that it is formed by an optical code reader, a decoder, a digital code and a memory position mark converter, a memory, a memory controller, a playback selection switch, a clock signal generator, a digital-to-analog converter, and a sounding device. A language and sound learning device composed of its optical code/barcode as the medium, each word, sentence, animal and musical instrument and other characters and patterns are set with a corresponding specific optical barcode, and each word, sentence, animal and The language and sound of musical instruments are digitized and stored in the memory, and then the optical code barcode is converted into an electrical signal by the optical code reader, and the electrical signal is received by the above-mentioned device, and then decoded into a digital code after being recognized. All correspond to a specific memory address mark, which can correctly extract the real voice information generated by nature such as the pronunciation of various digitized characters, the sound of musical instruments, and the sound of animals stored in the memory, and convert it into an analog signal. Afterwards, play it out with a loudspeaker or an amplifier. The relationship between the electrical signal output by the optical code scanner and the optical code/barcode is shown in Figure 2. Generally speaking, a logic "1" represents a black line and a logic "0" represents a white line, a thicker black line produces a continuous logic "1", likewise a thicker white line produces a continuous Logic "0", through the different combinations of thick black lines, thin black lines, thick white lines and thin white lines, the patterns displayed are various types of optical codes/barcodes, and the combination methods are generally It can be 39 codes, EAN codes, UPC codes, interleaved 25 codes, CODABAR codes or 128 codes, etc. For the convenience of explanation, the present invention uses 39 codes as the encoding method. Figure 3 is the characters and Its corresponding optical code/barcode pattern.

In Figure 4, the optical code/barcode pattern corresponds to the digital code and each digital code is preset to correspond to an example of each English word, where the digital code "0001" is set to represent the English word "a", and the digital code " 0002" is set to represent the English word "able" and so on, that is, after the digital code "0001" is processed by the digital code to memory position mark converter (3), the memory start position mark "0000" and the digital code "0000" can be obtained. 0002" through the same processing to obtain the memory start position mark "mmmm", and the digital code "0003" through the same process to obtain the memory start position mark "nnnn" and so on, as shown in Figure 5, which means that the English word The digitized sound information of "a" is stored in the area from address "0000" to address "mmmm-1" in the digitized sound information memory (6), wherein the address "0000" to address "rrrr-1" stores the English word " The digitized voice information of the first voice of "a", the digitized voice information of the second voice of the English word "a" is stored from the address "rrrr" to the address "mmmm-1", and the digitized voice information of the first voice of the English word "able" is stored In the area from address "mmmm" to address "mmmm+ssss-1" in the digitized sound information memory (6), the digitized sound information of the second voice of the English word "able" is stored in the digitized sound information memory (6) In the area from address "mmmm+ssss" to address: "nnnn-1", and so on, as shown in Figure 6, the first piece of information in the digitized sound information of each word can be set as the length of the information, In order to facilitate the memory controller (5) to correctly fetch information from the digitized sound information memory (6).

The flow chart of the memory controller work is shown in Figure 7. After the memory controller (5) receives the memory start position mark (12) (500), the value addressed by the mark (12) is output to the digitized sound information memory according to this (6) the address input terminal (15), and obtain the digitized sound information length (502) of the first voice region by its information output terminal (16), when the selection mode (18) is the first voice (504), then Directly increase the value of the address input terminal (15) one by one with the sampling clock frequency (17) generated by the sampling clock generator (4) (506), and obtain the first voice digitized sound information (508) from the information output terminal (16) ), until the amount of information taken out is the same as the length of the digitized sound information in the first voice area (510-512); Mark (12) plus the value of the length of the voice information in the first voice zone is output to the address input terminal (15) of the digital memory (6), and the digitized voice information in the second voice zone is obtained by its information output terminal (16) length (516), then increase the value of the address input terminal (15) one by one with the sampling clock frequency (17) generated by the sampling clock generator (4) (518), and obtain the second voice from the information output terminal (16) area digitized sound information (520), until the amount of information taken out is the same as the digitized sound information length of the above-mentioned second voice area (522-524); Device (5) continues to take out the information (516-524) of the second voice area after obtaining the information of the first voice area (506-512) in the digitized sound information memory (6); When the sound information memory (6) takes out the digitized sound information, it also outputs the above information to the digital-to-analog converter (7) (508, 502), and the sampling frequency of the digital-to-analog converter (7) and the sampling clock generator (4 ) produces the same sampling clock frequency (17), which is basically the same as the sampling frequency when the sound signal is digitally processed in advance, such as 8,000 bytes per second, but the present invention also provides users with the ability to change the sampling clock frequency (17 ) to speed up or slow down the sound playback. The analog signal (14) output by the digital-to-analog converter (7) is finally played through the sound generating device (8), such as an amplifier and a speaker.

In order to save the space of the digitized sound information memory (6), the digitized sound information can also be compressed in advance to reduce the amount of information, and stored in the digitized sound information memory (6), and when playing, the memory The controller (5) can decompress them one by one; in addition, in order to enrich the sound information and content, the present invention provides a connector (20), as shown in Figure 8, which allows the designer to design the digital code to The contents of the memory address marking converter (3) and the digitized sound information memory (6) are placed in an external cassette (21), which can be inserted into the connector (20), so that the present invention has a pluggable and expandable functions to achieve an entertaining and diverse language and sound learning device.

The present invention provides a variety of playing modes, which allow users to use an optical code reader to scan on visible media, such as paper, plastic sheets, etc., on optical code barcodes printed beside various patterns After inputting, you can hear the name of the text spoken by the real voice, or play the cry or music of the pattern, or allow the user to choose mixed playback, for example, to read the name of the same object in two languages, Or read the animal's name in real voice, followed by its sound. Therefore, the present invention provides a relatively entertaining and variable learning method, enabling users to obtain better learning effects.

Fig. 1 is a block diagram of the present invention;

Fig. 2 is the optical code/barcode of the present invention and the electrical signal diagram output after scanning by the optical code reader;

Fig. 3 is that the present invention adopts the corresponding optical code/bar code representation diagram of each character of 39 yards;

Fig. 4 is an example representation diagram of an optical code/barcode pattern of the present invention corresponding to digital codes and English words;

Fig. 5 and Fig. 6 are the example representation diagrams of the digital code of the present invention corresponding to the initial position of the memory and the digitized sound information area;

Fig. 7 is the working flowchart of memory controller of the present invention;

FIG. 8 is a schematic diagram of an external connector and a cassette used in the present invention.

A preferred embodiment of the present invention is that it adopts an optical code reader (1), which is generally available in the market for pen-type barcode readers or palm-type barcode readers, which can convert optical codes/barcodes Composed of an electrical signal and a sound learning machine (10), the learning machine (10) includes an optical code/barcode decoder (2) that receives the electrical signal output by the optical code reader (1) and converts it into a digital signal digital code (11), the digital code (11) can be converted into a specific starting position mark (12) after being processed by the digital code-to-memory position mark converter (3), and the memory controller (5) samples The sampling clock frequency (17) produced by the clock generator (4) will be stored in sequence from the position specified by the memory start position mark (12) and the selection mode (18) output by the playback mode selection beginning (9) The information output terminal (16) of the digitized sound (6) takes out a string of digitized sound information (13) and outputs it to the digital-to-analog converter (7), converts the digitized sound information (13) into an analog sound signal (14), and finally The analog sound signal (14) is broadcast by the sound generating device (8).

Claims (13)

1, one serves as the mould sound converting apparatus of input media with optical code/bar code, and it converts optical code/bar code to electric signal by optical code reader (1), it is characterized in that it includes:

An optical code/bar code decoder (2) can become numerical code with the electrical signal conversion of above-mentioned optical code reader (1) output;

A numerical code can convert above-mentioned each numerical code to specific memory device reference position mark to memory bit tagging converter (3);

A digitizing acoustic information storer (6), it is storing various acoustic informations after digitized processing in advance;

A sampling clock generator (4) produces the sampling clock pulse of a characteristic frequency;

A broadcast mode selector switch (9), the selectable voice broadcast mode;

A Memory Controller (5), according to the setting of above-mentioned storer reference position mark, sampling clock pulse and broadcast selector switch, a string optional network specific digit acoustic information that can will be stored in the storer (6) takes out;

A digital to analog converter (7), the digitized voice information of its reception memorizer controller (5) output, and convert it to simulating signal; And

A sound-producing device, it is accepted the simulating signal of digital to analog converter (7) output and sounds.

2,, it is characterized in that said selection broadcast is meant, can select two or more language and sound according to the said device of claim 1.

3, according to the said device of claim 1, it is characterized in that said selector switch (9), can select to play first voice, second voice and play first and second voice in regular turn.

4, according to the said device of claim 1, it is characterized in that said converter (3) and storer (6), can be by the external card casket (21) that includes numerical code to a memory bit tagging converter and a digitizing acoustic information storer of connector (20), in order to expand its function.

5, according to the said device of claim 1, it is characterized in that said clock generator (4), can produce the pulsating wave of various different frequencies, extract speed, the slewing rate of digital to analog converter (7) and the sound playing speed of sound-producing device (8) of string number acoustic information in order to control from storer (6).

6, according to the said device of claim 1, it is characterized in that said storer (6), the acoustic information that it is stored can be pronunciation, the music of musical instrument and the cry of animal through the literal of digitized processing.

7, according to the said device of claim 6, it is characterized in that said acoustic information, can be through the numerical information after the Information Compression, and when Memory Controller (5) extracted these information one by one in storer (6), its back-pressure can be contracted be reduced into original digital sound information.

8, mould sound conversion method according to the said device of claim 1, it includes the following step:

A. convert optical code/bar code to electric signal by optical code reader (1);

B. the electric signal with reader (1) output converts numerical code to through demoder (2);

C. each numerical code is converted to the mark of specific memory device (6) reference position through converter (3);

D. according to the setting of above-mentioned storer (6) reference position mark and broadcast mode selector switch (9), and take out according to a string acoustic information after digitized processing in advance that the sampling pulse of a characteristic frequency will be stored in the storer (6);

E. convert digitized voice information to simulating signal through digital to analog converter (7);

F. simulating signal is sounded by sound-producing device (8).

9, according to the said method of claim 8, it is characterized in that said broadcast mode, can select to play two or more language and sound.

10, according to the said method of claim 8, it is characterized in that said selector switch (9), can select to play first voice, second voice and play first and second voice in regular turn.

11, according to the said method of claim 8, it is characterized in that said sampling pulse, it can change frequency, with speed, the slewing rate of digital to analog converter (7) and the sound playing speed of sound-producing device of control from the interior extraction of storer (6) string number acoustic information.

12, according to the said method of claim 8, it is characterized in that the said acoustic information that is stored in the storer (6), can be the sound that the Nature such as cry of the music of pronunciation, musical instrument through the literal after the digitized processing and animal produce.

13, according to the said method of claim 12, it is characterized in that the said acoustic information that is stored in the storer (6), can be through the numerical information after the signal compression, and in the time will in storer (6), extracting a string these information one by one, its compression can be reduced into original digital sound information.

Images