Audio sensor board and multi-hop audio transmission method

An audio sensor and audio data technology, applied in speech analysis, transmission systems, instruments, etc.

Inactive Publication Date: 2009-01-07
TSINGHUA UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

In addition, the existing voice nodes are mostly point-to-point transmission, and there are not many wireless transmission nodes that support multi-hop, especially the voice nodes that have self-organization f...

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  • Audio sensor board and multi-hop audio transmission method
  • Audio sensor board and multi-hop audio transmission method
  • Audio sensor board and multi-hop audio transmission method

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Embodiment Construction

[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] based on the following Figure 1-Figure 6 The multimedia wireless sensor network audio sensor board and its multi-hop voice transmission implementation method according to the embodiment of the present invention are described.

[0025] refer to figure 1 and Figure 2, figure 1It shows the hardware connection block diagram of the multimedia wireless sensor network audio sensor board of the present invention, and FIG. 2 shows the hardware principle diagram of the multimedia wireless sensor network audio sensor board of the present invention. The multimedia wireless sensor network audio sensor board is designed based on the concept of modularization. The hardware con...

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Abstract

The invention discloses an audio sensor board and a multihop audio transmission method. The hardware of the audio sensor board has the functions of audio codec and AD/DA switching, and is provided with a universal interface which can constitutes an audio sensor node together with a wireless sensor network core-board; by using the method, the audio codec and real-time multihop audio transmission can be realized, and the wireless communication software abides the norms of ZigBee 2006 protocol stack of TI company. The network audio node of a multimedia wireless sensor formed according to the invention can join in ZigBee network dynamically, and the audio real-time multihop long distance transmission can be realized. The invention can be used in the audio transmission or audio remote control and human-computer interaction based on audio identification/synthesis in the fields of environmental detection, rescue robots, humanoid robots, intelligent home, intelligent toys, intelligent traffic, environment monitoring, auto electronics, health supervision, military technology, and the like, and is especially applicable to the application field which supports ZigBee audio transmission.

Description

technical field [0001] The invention relates to the technical field of multimedia wireless sensor networks and the technical field of ZigBee low-speed short-distance wireless personal area network communication, in particular to an easily assembled multimedia wireless sensor network audio node and a multi-hop voice transmission method thereof. Background technique [0002] With the continuous development of multimedia technology, wireless communication technology and electronic technology, multimedia wireless sensor network technology has aroused the general concern of the society. Multimedia applications with video, audio, image, and text as basic elements have broad application prospects in the fields of video surveillance, target recognition and tracking, speech recognition and interaction, and virtual reality. [0003] As one of the important development trends of sensor networks, multimedia wireless sensor networks not only have the common characteristics of sensor netw...

Claims

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Application Information

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IPC IPC(8): H04L12/28H04L29/08G10L19/00
Inventor 邓志东徐朝农裴忠民
Owner TSINGHUA UNIV
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