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Speech recognition system and speech recognition method

A speech recognition and speech technology, applied in speech recognition, speech analysis, instruments, etc., can solve the problems of increasing the production cost of the speech recognition system, difficult to compensate, difficult to measure the frequency response characteristics of the microphone, etc.

Inactive Publication Date: 2016-06-01
HYUNDAI MOTOR CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

According to a conventional voice recognition system using a microphone as a voice input device, an additional distance sensor is required for compensating frequency distortion due to the frequency response characteristic of the microphone, and thus, increases the production cost of the voice recognition system
In an environment with a lot of noise, such as a vehicle running, it is difficult to measure the frequency response characteristics of the microphone and to compensate for distortion due to the acoustic environment in the vehicle

Method used

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  • Speech recognition system and speech recognition method
  • Speech recognition system and speech recognition method
  • Speech recognition system and speech recognition method

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Embodiment Construction

[0027] Hereinafter, the present disclosure will be described more fully with reference to the accompanying drawings that illustrate exemplary embodiments. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0028] Since each component shown in the drawings is arbitrarily shown for ease of description, the present disclosure is not particularly limited to the components shown in the drawings.

[0029] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It should be further understood that the terms "comprises" and / or "comprising" used in this specification specify the presence of said features, integers, ...

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Abstract

The invention discloses a speech recognition system and a speech recognition method. The speech recognition system includes a transfer function storage storing a vehicle transfer function, which represents an acoustic environment in a vehicle and frequency response characteristic of a microphone; a signal-to-noise ratio (SNR) estimator estimating an SNR of an input signal received from the microphone; a speech section determiner determining a speech section to which the vehicle transfer function is applied based on the SNR; a frequency pattern extractor extracting a feature pattern of the speech signal of which the frequency distortion is compensated; and a speech recognition engine recognizing a speech command by using the feature pattern.

Description

[0001] Cross-references to related applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2014-0166789 filed with the Korean Intellectual Property Office on November 26, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to a speech recognition system and a speech recognition method. Background technique [0004] A human-machine interface (HMI) enables users to communicate with machines through sight, sound, or touch. [0005] In order to minimize the distraction of the driver's attention and improve user convenience, attempts have been made to use voice recognition for the HMI in the vehicle. [0006] According to a voice recognition system in a vehicle, when a user's (eg, driver's) voice is transmitted to the voice recognition system through a microphone, the voice signal is affected by the acoustic environment in the vehicle and the frequency...

Claims

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Application Information

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IPC IPC(8): G10L15/20G10L21/0232
CPCG10L15/20G10L21/0232G10L21/0216G10L25/84G10L15/02G10L15/28
Inventor 尹现珍李昌宪
Owner HYUNDAI MOTOR CO LTD
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