JPH0460577A - Audio reproducing device - Google Patents

Abstract

PURPOSE:To confirm a voice not only auditorily but also visually by recognizing the voice of an electric signal which represents the voice by a voice recognition means and displaying characters corresponding to the recognized voice on a display means. CONSTITUTION:A low-frequency signal A2 is outputted from a sound recording and reproduction part 11 for a constant time T under the control of a control circuit 22 and converted into a digital signal D1, which is held on a memory 17. Then a voice recognition part 18 performs a voice recognizing process for the digital signal D1 held on the memory 17 and the characters corresponding to the recognized voice are displayed on the LCD (liquid crystal display) 19. Thus, the voice recognition of the electric signal representing the voice is performed by the voice recognizing means 18 and the characters corresponding to the voice are displayed on the character display means 19. Consequently,t he voice can be displayed not only auditorily, but also visually.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a recording/playback device such as a tape recorder,
In particular, the present invention relates to an audio playback device capable of displaying audio in text.

(Prior Art) Audio playback devices such as tape recorders are used not only to play back music, but also to record and play back language learning and dictation.

In language learning and dictation, it is necessary to repeatedly reproduce one or two syllables of speech.

Conventionally, such repeated playback has been performed by mechanically rewinding the recorded tape by a predetermined amount and then returning the tape to the playback state. Also, recently, it has become common practice to sample the audio signal of a portion that is desired to be heard repeatedly, convert it into a digital signal, hold this digital signal in a memory, and repeat the process of sequentially converting the audio signal into an audio signal and playing it back.

FIG. 2 is a diagram showing an example of the configuration of such a conventional cassette tape recorder with radio.

As shown in the figure, this cassette tape recorder with radio includes a recording/playback section 1, a microphone 2 for inputting audio, and a tuner 3 for receiving a radio high frequency signal and converting it into a low frequency signal. A speaker 4 that outputs the low frequency signal from the recording/playback section 1 as a sound wave, an A/D converter 5 that converts the analog signal output from the recording/playback section 1 into a digital signal, and an output from the A/D converter 5. A memory 6 that holds digital signals stored in the memory 6, and a D that converts the digital signals held in the memory 6 into analog signals.
The main parts are composed of the /A converter 7, the repeat switch 8, and the control section 9 that controls repeated reproduction.

Next, the playback operation, which is a characteristic part of the radio-equipped cassette tape recorder having the above-described structure, will be explained.

First, when the repeat switch 8 is pressed when the audio signal from the tuner 3 or the audio signal recorded on the tape is played back by the recording/playback circuit 1, the audio signal is transferred to the A/D under the control of the control section 9. The digitized audio signal is digitized by the converter 5 and held in the memory 6, and the digitized audio signal held in the memory 6 is repeatedly converted into an analog signal by the D/A converter 7 and reproduced.

In this way, the repeat function of a conventional tape recorder is
The sound is repetitive, which is not enough when considering the efficiency of language learning and dictation, and a more efficient function was desired.

(Problem to be solved by the invention) As mentioned above, conventional audio playback devices such as tape recorders that have a repeat function only repeat audio, which is insufficient when considering the efficiency of language learning and dictation. There was a desire for a recording/playback device with more efficient functions.

The present invention was created to solve the above problems, and an object of the present invention is to provide an audio playback device that has more efficient functions in language learning, dictation, and the like.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above object, the first invention provides a voice recognition means for recognizing a voice from an electrical signal representing the voice, and a voice recognition means for recognizing a voice from an electrical signal representing the voice. An audio playback device characterized by comprising a character display means for displaying characters corresponding to the voice, and a second invention is an audio playback device characterized in that, in the first invention, at every predetermined interval of the electric signal representing the voice, A third aspect of the present invention is an audio playback device characterized in that the voice is recognized and the corresponding characters are displayed by the character display means,
In the invention, the audio reproduction device is characterized in that voice recognition and character display are performed simultaneously with the output of voice, and a fourth invention is an audio playback device characterized in that voice recognition and character display are performed at the same time as voice output; The audio playback device further includes a printing means for printing corresponding characters.

(Function) In the audio reproducing apparatus of the present invention, an electrical signal representing a voice is recognized by the voice recognition means, and characters corresponding to the voice are displayed by the character display means.

Therefore, the voice can be recognized not only by hearing but also visually, so that the voice recorded on the recording medium can be recognized efficiently.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an embodiment in which the audio reproducing apparatus of the present invention is applied to a cassette tape recorder with a radio.

As shown in the figure, this cassette tape recorder with radio includes a recording/reproducing circuit 11 for recording and reproducing audio signals such as voices onto a cassette tape, a microphone 12 for inputting audio, and a radio high-frequency A tuner 13 that receives a signal and converts it into a low frequency signal, and a low frequency amplification circuit 14 that amplifies the low frequency signal from the recording/playback section 11.
, a speaker 15 that outputs the signal amplified by the low frequency amplification circuit 14 as a sound wave, and A that converts the analog signal output from the recording/playback section 11 into a digital signal.
/D converter 16 and A/D converter] 6;
A voice recognition unit 18 sequentially recognizes the voice digital signals held in the voice recognition unit 18, and an LCD (1) that displays characters corresponding to the voices recognized by the voice recognition unit 18.
iquid crystal display) 19
and an external interface 2 that outputs character data corresponding to the voice recognized by the voice recognition unit 18 to the outside.
0, a D/A converter 21 that converts the audio digital signal held in the memory 17 into an analog signal,
The main parts are composed of a control section 22 that controls voice recognition and repeat operation, and a start switch 23.

Next, the playback operation, which is a characteristic part of the radio-equipped cassette tape recorder having the above-described structure, will be explained.

First, a case will be described in which an audio signal recorded on a cassette tape is played back.

The audio signal recorded on the cassette tape 31 is converted into a low frequency signal A1 by the recording/reproducing circuit 11 and sent to the low frequency amplification circuit 14. The low frequency signal A1 is then amplified by the low frequency amplification circuit 14 and outputted as sound from the speaker 15.

On the other hand, when the start switch 23 is pressed during the playback operation, the recording/playback unit 1 is controlled by the control circuit 22.
1 to the A/D converter 16 for a predetermined period of time T. And A/D converter 16
The low frequency signal A2 is converted into a digital signal D1.

Further, digital signal D1 is held in memory 17.

Further, the recording/reproducing section 11 stops the motor 32 according to an instruction from the control section 22 .

Then, the voice recognition unit 18 sequentially performs voice recognition processing on the digital signal D1 held in the memory 17. Furthermore, characters corresponding to the recognized voice are displayed on the LCD 19.

On the other hand, the D/A converter 21 held in the memory 17 under the control of the control unit 22 converts the digital signal D1 into an analog signal A3, and this analog signal A3 is amplified by the low frequency amplifier 14 and output from the speaker 15. Ru.

The voice recognition process and voice reproduction process of the digital signal D1 held in the memory 17 are repeated a predetermined number of times. Thereafter, under the control of the control section 22, the recording and reproducing section 11 rotates the motor 32 and returns to normal reproducing operation.

Furthermore, a character code corresponding to the recognized voice is output to the external interface 20, and if a printer, word processor, etc. is connected to the external interface 20, it becomes possible to print characters on these devices. .

Furthermore, the low frequency signals from the tuner 13 and the microphone 12 are stored as digital signals in the memory 17 by pressing the start switch 23 in the same way as the above-mentioned playback of the audio signals recorded on the cassette tape, and the audio signals are stored in the memory 17 as digital signals for voice recognition. Audio playback is repeated.

In this way, in the cassette tape recorder with radio of this embodiment, voice recognition is performed and characters are displayed at the same time as the voice is played back, so recognition can be performed not only aurally but also visually. You will be able to do repeated learning such as languages, dictation, etc. efficiently.

Also, the audio signal recorded on the tape 31, the tuner 13
By transferring the audio signal output from the microphone 12 or the character data corresponding to the audio signal output from the microphone 12 to a printer, word processor, etc. via the external interface 20, it is also possible to perform simple automatic document creation. Become.

In the cassette tape recorder with radio of this embodiment, the A/D converted and digitized audio signal is held in the memory 17 from the moment the start switch 23 is pressed, but the A/D conversion is not always performed. The memory 17 is stored as FIFO (first in Nrst out).
) memory and when the start switch 23 is pressed,
It is also possible to perform speech recognition processing on the digitized speech signals held in the memory 17.

In this case, voice recognition processing is performed on the voice for a certain period of time before the start switch 23 is pressed.

Further, in the above-mentioned embodiments, the case where the present invention is applied to a tape recorder has been explained, but the present invention is not limited to the above-mentioned embodiments, and can be applied to the audio reproduction section of a VTR or the reproduction section of an answering machine. Of course.

[Effects of the Invention] As explained above, according to the audio playback device of the present invention, an electrical signal representing a voice is recognized by the voice recognition means, and characters corresponding to the recognized voice are displayed by the display means. By doing so, the voice can be confirmed not only auditory but also visually, making language learning and dictation more efficient.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the configuration of an embodiment in which the audio playback device of the present invention is applied to a cassette tape recorder with a radio, and FIG. 2 is a diagram showing an example of the configuration of a conventional cassette tape recorder with a radio. . 11... Recording/playback section, 16... A/D converter,
17...Memory, 18...Speech recognition unit, 19...L
CD. 20... External interface, 21... D/A converter, 22... Control unit, 23... Start switch, 31... Cassette tape. Applicant: Toshiba Corporation

Claims (4)

[Claims] (1) An audio playback device comprising: a voice recognition device that recognizes voice from an electrical signal representing the voice; and a character display device that displays characters corresponding to the voice recognized by the voice recognition device. (2) The audio reproducing apparatus according to claim 1, wherein the audio reproduction device recognizes the voice and displays corresponding characters on the character display means at every predetermined interval of an electrical signal representing the voice. (3) The audio playback device according to claim 1 or 2, wherein voice recognition and character display are performed simultaneously with voice output. (4) The audio reproducing apparatus according to claim 1, further comprising printing means for printing characters corresponding to the voice recognized by the voice recognition means.