JPS58197951A - Character sound communication terminal equipment - Google Patents

Abstract

PURPOSE:To select a sound and an amount of information in accordance with use, and to obtain an equipment of a small scale, by using in common a sound synthesizing circuit for generating a sound from a character data stored temporarily in a buffer memory, and a synthesizing circuit for synthesizing a sound from a sound analyzing and sythesizing data. CONSTITUTION:A character data or a sound analyzing and synthesizing data, which is transmitted and received by a communication line 1 is stored in a buffer memory 3 through an MODEM2. The character data and the sound analyzing and synthesizing data, which are stored in this buffer memory 3 are inputted to a controlling circuit 4. Also, a sound analyzing data from a sound waveform input terminal 12 is provided to the circuit 4 through a sound analyzing circuit 8. The character data inputted to this circuit 4 is displayed on a display 10, also is provided to a rule synthesizing circuit 7, and a spectrum envelope parameter value conforming to the character data, and the sound synthesizing data consisting of a sound source parameter value are provided to a sound synthesizing circuit 11. It is used in common with a circuit for synthesizing a sound data from the sound analyzing and synthesizing data, therefore, an equipment of a small scale is obtained.

Description

[Detailed description of the invention] The present invention relates to a text/voice communication terminal device K.

Traditionally, communication was carried out by using data communication lines such as telephone lines as an intermediary, and by decoding the analysis data extracted from the voice waveform at the transmitter's terminal and synthesizing the voice waveform at the receiver's terminal. There are known communication methods.

Furthermore, a method is known in which character data is transmitted from a terminal on the transmitting side, and a voice waveform is synthesized using the character data on the receiving side. However, the former has the drawback that although the sound quality is relatively good, the amount of information to be transmitted is large, and the latter has the drawback that the amount of information to be transmitted is relatively small but the sound quality is poor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a relatively small-scale text-to-speech communication terminal device that allows selection of sound quality and amount of information depending on the application.

The present invention provides a buffer memory for temporarily storing character data or voice analysis and synthesis data to be sent and received, means for generating voice synthesis data according to the character data output from the buffer memory, and voice analysis and synthesis output from the buffer memory. and means for synthesizing a voice waveform according to the data or the voice synthesis data.

A feature of the present invention is that the speech synthesis circuit used when generating speech from character data and the speech synthesis circuit used when synthesizing speech from 1-analysis synthesis data are shared.

Therefore, according to the present invention, it is possible to realize a relatively small-scale text-to-speech communication terminal device in which a speech synthesis method can be selected according to a request.

In addition to the character data representing the syllable, the character data may include symbols representing accents, boundary symbols representing boundaries between words, exhalation paragraphs, etc., symbols representing strength of meaning, and the like. The method for synthesizing speech from the character data is detailed in, for example, the following document, so a description thereof will be omitted here.

Fushikida, Mitome [CV, VCG collection type arbitrary speech synthesis method using formant parameters] Information of Institute of Electronics and Communication Engineers, 1985, System Division National Daikin, 1-104 Next, the present invention will be explained in detail using drawings. do. The figure is a block diagram showing an embodiment of the present invention.

First, when used as a transmitting terminal, one character data is inputted to the control circuit 4 via the keyboard 6. A control circuit 4 outputs the character data to the buffer memory 3, and transmits the contents of the buffer memory 3 to the modem according to a transmission start command input from the keyboard through similar processing.

2, and communication line input/output terminal, communication line MK via 1.
Output. On the other hand, when transmitting speech analysis and synthesis data, the speech waveform is first inputted to the speech analysis circuit 8 via the speech waveform input terminal 12. A voice analysis circuit 8 is a control circuit for extracting sound source data such as vector envelope data and pitch data from the voice waveform as voice analysis and synthesis data.

Output to 4. A control circuit 4 temporarily stores the voice analysis and synthesis data in a buffer memory, 3, and then transfers the voice analysis and synthesis data in the buffer memory and 3 to a modem, 2 according to a transmission start command inputted from the keyboard and 6.
and output to the communication line via the communication line input/output terminal 1.

Next, a case where the device is used as a receiving terminal will be explained. First if character data is received.

Character data is input from a communication line to a buffer memory 3 via a communication line input/output terminal 1 and a modem 2. The buffer memory outputs the character data to the control circuit 4 in accordance with the character data end code received after the reception of the 3α character data is completed.

A control circuit 4 outputs the character data to a display 5 and at the same time to a rule synthesis circuit 7 according to the character data end code. A display 5 displays the characters on the cathode ray tube according to the character data. On the other hand, the rule synthesis circuit %7 generates speech synthesis data consisting of spectral envelope parameter values and sound source parameter values according to the character data and outputs it to the speech synthesis circuit 10. A speech synthesis circuit 10 synthesizes a speech waveform according to speech synthesis data (the vector envelope parameter value and the sound source parameter value) and outputs the synthesized speech waveform via a synthesized waveform output terminal %11. In addition, when receiving voice analysis and synthesis data,
First, voice analysis and synthesis data is input from a communication line to a buffer memory 3 via a communication 1g1 line input/output terminal and a working modem 2. A buffer memory 3 is a control circuit for controlling the voice analysis and synthesis data according to a voice analysis and synthesis data end code received after the reception of the voice analysis and synthesis data is completed;
Output to. The control circuit 4 outputs the voice analysis and synthesis data to the voice synthesis circuit 10 via the analysis and synthesis data transmission path 9 in accordance with the voice analysis and synthesis data end code. A speech synthesis circuit 10 synthesizes a speech waveform according to the speech analysis and synthesis data and outputs it via a synthesis waveform output terminal 11. That is, the control circuit 4 determines whether the character data is speech analysis and synthesis data based on the contents of the termination code received after data reception is completed, and selects processing according to the input signal. Note that the vector envelope parameter values and sound source parameter values output from the rule synthesis circuit 7 have exactly the same data format as the speech analysis and synthesis data. Therefore, it becomes possible to share the speech synthesis circuit KFi. −

[Brief explanation of drawings]

The figure is a block diagram showing an embodiment of the present invention. In the figure, 1 is the communication line input terminal 2 is modem 3 is buffer memory 4 is the control circuit 5 is the display 6 is the keyboard 7 is a rule synthesis circuit 8 is a voice analysis circuit 9 is an analysis and synthesis data transmission line lO is a speech synthesis circuit 11 is the composite waveform output terminal 12 is the audio waveform input terminal It is.

Claims (1)

[Claims] In a communication terminal device that communicates via a communication @ line,
The ba-shihua memory temporarily stores text data sent and received, as well as speech analysis and synthesis data. It is characterized by comprising means for generating speech synthesis data according to the character data output from the buffer memory, and means for synthesizing a speech waveform according to the speech analysis and synthesis data output from the buffer memory or the speech synthesis data. Text/voice communication terminal device.