Voice communication device

A technology for voice calls and elevators, used in interconnection devices, branch office voice amplifiers, telephone communications, etc., and can solve problems such as proper timing of initial learning

Inactive Publication Date: 2018-09-04
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when using the prior art as it is, there is a problem that it cannot be said that the timing of the initial learning is appropriate

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] The voice communication device according to Embodiment 1 of the present invention will be described. figure 1 It is a block diagram of an elevator emergency reporting system using the voice communication device of the present invention. In the figure, 1 is an elevator, 2 is an intercom installed in the elevator 1, 3 is an elevator operation control part that controls the operation of the elevator 1, 4 is a voice communication device, 5 is a communication network, and 6 is a communication network for the elevator 1. The destination monitoring center, 7 is a telephone terminal in the monitoring center 6 .

[0028] For example, when the elevator 1 breaks down and passengers are locked in the elevator 1 , this system is used to call the operator of the monitoring center 6 and make a call. At this time, the walkie-talkie 2 is used for the voice input and output of the person who is locked in the elevator 1, and the voice communication device 4 performs mutual conversion bet...

Embodiment approach 2

[0056] In Embodiment 1, the learning opportunity determination unit 41 is based on Figure 6 The shown flow determines whether it is time to perform initial learning. Specifically, based on the button press information from the elevator operation control unit 3, it is determined that there is no passenger in the elevator 1 based on the condition (ST16) that a predetermined time has elapsed since the last button in the elevator 1 was pressed, that is, initial learning. time. On the other hand, in this embodiment, the structure which judges that there is no passenger in the elevator 1 by another means is shown.

[0057] In the elevator 1, there is an elevator having a buzzer notifying of overload. In such an elevator 1 , the elevator operation control unit 3 can output the weight information in the elevator 1 to the learning opportunity determination unit 41 . The learning opportunity judging unit 41 uses this information for judging the initial learning time. Figure 8 The ...

Embodiment approach 3

[0061] In this embodiment, the structure which judges the condition that there is no passenger in the elevator 1 from the camera image is shown. There is also an elevator that enables not only voice communication but also image communication during the call.

[0062] Figure 9 The flow of the learning opportunity judging unit 41 judging the initial learning time is shown. In this flow, instead of the condition that a predetermined time or more has elapsed since the last button in elevator 1 was pressed, the condition that there is no one in the camera image (ST22) is used in the judgment, and the other is the same as Figure 6 Same process.

[0063] As described above, according to the invention of the present embodiment, the learning opportunity judging unit 41 judges that there is no one in the camera image, thereby judging that there is no passenger, and judging whether or not initial learning can be performed. According to this configuration, similarly to Embodiments 1 ...

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PUM

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Abstract

A voice communication device according to the present invention is a voice communication device for an elevator, the voice communication device characterized in being provided with: a parameter-holding unit for holding a parameter dependent on the path of an echo of a signal; a signal processor for processing, using the parameter, a voice signal during voice communication; a learning opportunity determination unit for determining, according to the environment in an elevator in which the host device is installed, whether or not it is possible to perform learning of the parameter prior to the voice communication; and a learning signal generator for generating, when it is determined by the learning opportunity determination unit that it is possible to perform learning, a learning signal for performing learning of the parameter. The configuration makes it possible to automatically perform initial learning at an appropriate timing without giving a user a sense of discomfort.

Description

technical field [0001] The invention relates to a voice communication device used for voice communication. Background technique [0002] Echo cancellers are used to prevent howling and echoes in voice communication devices capable of hands-free communication, such as speakerphones. The conditions for echo generation depend on the environment in which the voice communication device is set. In general, a room that is narrow and surrounded by hard walls has a large reverberation, so a large echo is generated. On the contrary, if it is a wide room, the echo The waves are relatively small. The echo canceller has an adaptive filter that sequentially learns the characteristics of the echo path (impulse response, etc.), and the adaptive filter sequentially learns the characteristics of the echo path that vary depending on the environment, and cancels the echo. However, in the case where the installation environment is greatly different, such a problem occurs that it is difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66B5/00B66B3/00H04M1/60H04M9/00H04R3/02
CPCB66B3/00B66B5/00H04M1/60H04M9/00H04R3/02H04M9/08
Inventor 铃木茂明古田训粟野智治
Owner MITSUBISHI ELECTRIC CORP
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