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Speech voice control system having microphone array

A voice control, microphone technology, used in speech analysis, speech recognition, loudspeakers, etc.

Inactive Publication Date: 2004-08-18
INTERDIGITAL CE PATENT HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in such cases the remote must be placed in front of the user's mouth

Method used

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  • Speech voice control system having microphone array
  • Speech voice control system having microphone array

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Embodiment Construction

[0010] In order to enable voice control from relatively long distances, the voice signal must be separated from interfering background signals. This can be done spatially separated by using a microphone array comprising two or more microphones. In this case it is very advantageous to spatially distribute the individual microphones of the array over as great a distance as possible. However, in a single consumer electronics appliance, the distance between individual microphones is limited by the diameter of the appliance, for example, the housing diameter of a TV is less than 1 meter.

[0011] In principle, the voice control system of the present invention comprises a microphone array with a plurality of microphones, which convert voice commands into electrical signals, and a central voice recognition unit, which converts these electrical signals into operating commands, the microphones being arranged in connection with each other The different electrical appliances are connect...

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Abstract

Voice control systems are used in diverse technical fields. In this case, the spoken words are detected by one or more microphones and then fed to a speech recognition system. In order to enable voice control even from a relatively great distance, the voice signal must be separated from interfering background signals. This can be effected by spatial separation using microphone arrays comprising two or more microphones. In this case, it is advantageous for the individual microphones of the microphone array to be distributed spatially over the greatest possible distance. In an individual consumer electronics appliance, however, the distances between the individual microphones are limited on account of the dimensions of the appliance. Therefore, the voice control system according to the invention comprises a microphone array having a plurality of microphones which are distributed between different appliances, in which case the signals generated by the microphones can be transmitted to the central speech recognition unit, advantageously via a bidirectional network based on an IEEE 1394 bus.

Description

technical field [0001] The present invention relates to a voice control system with a microphone array, especially for controlling consumer electronic devices. Background technique [0002] Voice control systems are used in various technical fields. In this example, spoken words are first detected as sound signals, typically by one or more microphones, and the sound signals are then fed to a speech recognition system. In this example, in general, speech recognition is based on sound models and phonetic models. The sound model employs a large number of phonetic graphics, using mathematical algorithms to indicate the word that acoustically best matches the spoken word. Speech models, on the other hand, are based on analysis that uses multiple document samples to determine the context and how often certain words are used in that context. Such a speech recognition system not only recognizes a single word, but also recognizes continuous spoken sentences with a high recognition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L15/20G10L15/26G10L21/0216H04R3/00
CPCH04R3/005H04R2201/401G10L15/265G10L2021/02166G10L15/26
Inventor 恩斯特·F·施罗德
Owner INTERDIGITAL CE PATENT HLDG