Speech recognition method and device

The invention provides a speech recognition method and device. The method comprises the following steps: dividing obtained sound data to be identified into a plurality of overlapped sound frames; carrying out fast Fourier transform operation on each sound frame to obtain corresponding frequency spec...

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1. Verfasser:	SUN TINGWEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACOUSTICS MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
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creator	SUN TINGWEI
description	The invention provides a speech recognition method and device. The method comprises the following steps: dividing obtained sound data to be identified into a plurality of overlapped sound frames; carrying out fast Fourier transform operation on each sound frame to obtain corresponding frequency spectrum; carrying out traversal on the frequency spectrum of the plurality of overlapped sound frames, and dividing the traversed frequency spectrum of the current sound frame into a plurality of non-overlapped sub-bands; according to frequency spectrum energy of the plurality of sub-bands of the current sound frame, calculating energy mean square root of the current sound frame; and when determining that the energy mean square root of the current sound frame is larger than a preset threshold value, determining that the current sound frame comprises speech information. According to the scheme above, speech recognition speed and accuracy can be improved. 语音识别方法及装置，所述方法包括：将获取的待识别的声音数据划分为多个重叠的声音帧，并对每个声音帧进行快速傅立叶变换运算，得到对应的
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The method comprises the following steps: dividing obtained sound data to be identified into a plurality of overlapped sound frames; carrying out fast Fourier transform operation on each sound frame to obtain corresponding frequency spectrum; carrying out traversal on the frequency spectrum of the plurality of overlapped sound frames, and dividing the traversed frequency spectrum of the current sound frame into a plurality of non-overlapped sub-bands; according to frequency spectrum energy of the plurality of sub-bands of the current sound frame, calculating energy mean square root of the current sound frame; and when determining that the energy mean square root of the current sound frame is larger than a preset threshold value, determining that the current sound frame comprises speech information. According to the scheme above, speech recognition speed and accuracy can be improved. 语音识别方法及装置，所述方法包括：将获取的待识别的声音数据划分为多个重叠的声音帧，并对每个声音帧进行快速傅立叶变换运算，得到对应的</description><language>chi ; eng</language><subject>ACOUSTICS ; MUSICAL INSTRUMENTS ; PHYSICS ; SPEECH ANALYSIS OR SYNTHESIS ; SPEECH OR AUDIO CODING OR DECODING ; SPEECH OR VOICE PROCESSING ; SPEECH RECOGNITION</subject><creationdate>2017</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170704&DB=EPODOC&CC=CN&NR=106920543A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20170704&DB=EPODOC&CC=CN&NR=106920543A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SUN TINGWEI</creatorcontrib><title>Speech recognition method and device</title><description>The invention provides a speech recognition method and device. The method comprises the following steps: dividing obtained sound data to be identified into a plurality of overlapped sound frames; carrying out fast Fourier transform operation on each sound frame to obtain corresponding frequency spectrum; carrying out traversal on the frequency spectrum of the plurality of overlapped sound frames, and dividing the traversed frequency spectrum of the current sound frame into a plurality of non-overlapped sub-bands; according to frequency spectrum energy of the plurality of sub-bands of the current sound frame, calculating energy mean square root of the current sound frame; and when determining that the energy mean square root of the current sound frame is larger than a preset threshold value, determining that the current sound frame comprises speech information. According to the scheme above, speech recognition speed and accuracy can be improved. 语音识别方法及装置，所述方法包括：将获取的待识别的声音数据划分为多个重叠的声音帧，并对每个声音帧进行快速傅立叶变换运算，得到对应的</description><subject>ACOUSTICS</subject><subject>MUSICAL INSTRUMENTS</subject><subject>PHYSICS</subject><subject>SPEECH ANALYSIS OR SYNTHESIS</subject><subject>SPEECH OR AUDIO CODING OR DECODING</subject><subject>SPEECH OR VOICE PROCESSING</subject><subject>SPEECH RECOGNITION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2017</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAJLkhNTc5QKEpNzk_PyyzJzM9TyE0tychPUUjMS1FISS3LTE7lYWBNS8wpTuWF0twMim6uIc4euqkF-fGpxQWJyal5qSXxzn6GBmaWRgamJsaOxsSoAQAE1Cak</recordid><startdate>20170704</startdate><enddate>20170704</enddate><creator>SUN TINGWEI</creator><scope>EVB</scope></search><sort><creationdate>20170704</creationdate><title>Speech recognition method and device</title><author>SUN TINGWEI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN106920543A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2017</creationdate><topic>ACOUSTICS</topic><topic>MUSICAL INSTRUMENTS</topic><topic>PHYSICS</topic><topic>SPEECH ANALYSIS OR SYNTHESIS</topic><topic>SPEECH OR AUDIO CODING OR DECODING</topic><topic>SPEECH OR VOICE PROCESSING</topic><topic>SPEECH RECOGNITION</topic><toplevel>online_resources</toplevel><creatorcontrib>SUN TINGWEI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUN TINGWEI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Speech recognition method and device</title><date>2017-07-04</date><risdate>2017</risdate><abstract>The invention provides a speech recognition method and device. The method comprises the following steps: dividing obtained sound data to be identified into a plurality of overlapped sound frames; carrying out fast Fourier transform operation on each sound frame to obtain corresponding frequency spectrum; carrying out traversal on the frequency spectrum of the plurality of overlapped sound frames, and dividing the traversed frequency spectrum of the current sound frame into a plurality of non-overlapped sub-bands; according to frequency spectrum energy of the plurality of sub-bands of the current sound frame, calculating energy mean square root of the current sound frame; and when determining that the energy mean square root of the current sound frame is larger than a preset threshold value, determining that the current sound frame comprises speech information. According to the scheme above, speech recognition speed and accuracy can be improved. 语音识别方法及装置，所述方法包括：将获取的待识别的声音数据划分为多个重叠的声音帧，并对每个声音帧进行快速傅立叶变换运算，得到对应的</abstract><oa>free_for_read</oa></addata></record>
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subjects	ACOUSTICS MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION
title	Speech recognition method and device
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