JPS61256848A - Transmission system for character code - Google Patents

Abstract

PURPOSE:To improve the efficiency of an information transmission from a main transmission path by transmitting a sound information after it is converted to a character code at a transmitting station side to a receiving station via a transmission path and transmitting a synthesized sound information from the character code to a receiving telephone set at the receiving station. CONSTITUTION:An information inputted from a transmitting telephone set 1 with voice is converted to the character code at a speech recognition part 5 in the transmitting station; namely, at the speech recognition part 5, a feature extraction, for example, such as the Fourier transform spectrum of an inputted sound signal is performed. And by comparing an extracted feature with a dictionary pattern which represents the correspondence of a feature series with the character pattern which is registered in advance at the speech recognition part 5, it is converted to the character code corresponded with the inputted sound signal and after that, it is transmitted from a conversion circuit A3 to a conversion circuit B6 via the transmission path under the control of an exchange control part 4. When the character code is received, the character code is converted to the sound information at a speech synthesis part 8 in the receiving station and the sound information is transmitted to a designated telephone set 9.

Description

[Detailed Description of the Invention] [Summary] The present invention is a system for efficiently transmitting a large amount of information by converting voice information into character codes and transmitting the main transmission path.

[Industrial application field]

The present invention relates to a telephone transmission control device, and more particularly to a telephone transmission system in which voice information is transmitted through a main transmission path using a character code, and the character code is converted into voice information at a receiving station.

[Conventional technology]

Conventional telephone systems include (1) a system in which voice signals are sent over all transmission paths, and (2) a system in which voice signals are encoded using PCM and sent on the transmission paths.

[Problems that inventions are trying to solve]

Both conventional methods have the disadvantage of requiring large amounts of data transmission.

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to efficiently transmit the amount of data on a transmission path.

[Means for solving problems]

The purpose is to transmit voice information input from the telephone 1 to the transmitting station 10.
The voice recognition unit 5 converts it into a character code and then sends it to the exchange circuit A.
This is achieved by a character code transmission method in which the character code is transmitted from 3 to the conversion circuit B6 of the receiving station 11 via a transmission path, and the character code is converted into voice information by a voice synthesis section and then transmitted to the receiving telephone 9.

[Effect]

In the transmission of voice information, the present invention converts the voice information into a character code at the transmitting station 10 side, and then transmits the voice information to the receiving station 10 via a transmission path.
1, and the receiving station synthesizes voice information from the character code and transmits it to the receiving telephone, thereby improving the information transmission efficiency of the main transmission path.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

The figure is a configuration diagram of a character code transmission device showing an embodiment of the present invention.

In the figure, 1. 9 is a telephone, 2 is a keyboard (character code can be entered), 3 is a switching circuit A, 4.7 is a switching control unit, 5 is a voice recognition unit, 6 is a switching circuit B110 is a transmitting station, and 11 is a receiving station. .

A telephone 1 and a keyboard 2 are connected to the switching circuit A3. The information input by voice from the transmitting telephone 1 is converted into a character code by the voice recognition unit 5 of the transmitting station, that is,
The speech recognition section 5 extracts features such as the Fourier transform spectrum of the input speech signal, and compares the extracted features with a dictionary pattern that indicates the correspondence between the feature series and character codes registered in advance in the speech recognition section 5. When a character code is received which is transmitted from the conversion circuit A3 to the conversion circuit B6 via the transmission path under the control of the exchange control unit 4 after being converted into a character code corresponding to the input audio signal through verification. At the receiving station, the character code is converted into voice information by the voice synthesis section 8, and the voice information is transmitted to the designated telephone set 9.

In the above explanation, information is transmitted from telephone 1 to telephone 9, but even when communication is performed in both directions, it is possible to do so by adding a voice recognition 8g1i section and a voice synthesis section to both stations. Become.

〔Effect of the invention〕

As explained above, according to the present invention, a large amount of audio information can be efficiently transmitted because the main transmission path is transmitted using a character code. In other words, for example, if the character string "phone" is generated in 1 second, it will be encoded at 10 KHz using the PCM encoding method.
Assuming that sampling is performed and quantized to 8 bits, the amount of transmitted information will be about 80 bytes, but the method according to the present invention has the effect of reducing it to 4 bytes.

[Brief explanation of drawings]

The figure is a configuration diagram of a character code transmission device showing an embodiment of the present invention. Explanation of symbols: 1.9 is a telephone, 2 is a keyboard (character code can be entered), 3 is a conversion circuit A, 4.7 is a conversion control unit, 5 is a voice U! , Oribe, 6 is a conversion circuit B, 10 is a transmitting station, and 11 is a receiving station.

Claims (1)

[Claims] The transmitting station uses the voice recognition means to convert the voice information input from the transmitting telephone (1) into a character code, and then transmits the character code to the receiving station via the transmission path, and the receiving station converts the voice information input from the transmitting telephone (1) into a character code using the voice synthesis means. A character code transmission method characterized by generating voice information from a code and then transmitting the voice information to a receiving telephone.