ENCODER AND ENCODING METHOD
PROBLEM TO BE SOLVED: To obtain pleasant sound quality by improving the sound quality when reproduction is performed with an encoded sound signal. SOLUTION: The mask level ML of the sound signal is set. The peak of the sound signal is detected. Frequencies f3 (=n×f1) and f4 (=n×f2) which are (n) tim...
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | |
| container_title | |
| container_volume | |
| creator | TAKADO SEIICHI |
| description | PROBLEM TO BE SOLVED: To obtain pleasant sound quality by improving the sound quality when reproduction is performed with an encoded sound signal. SOLUTION: The mask level ML of the sound signal is set. The peak of the sound signal is detected. Frequencies f3 (=n×f1) and f4 (=n×f2) which are (n) times as high as the peak frequencies (f1 and f2) are set. It is discriminated whether or not the sound pressure at the frequency f3 which is (n) times as high as peak frequency f1 is sound pressure which is almost 1/n time as high as the sound pressure d1 at the peak frequency f1. When the sound pressure f3 is 1/n time as high as the sound pressure d1 at the peak frequency f1, the mask level in a band including the peak frequency f3 is corrected from the mask level MLa to 0. The frequency f4 (=n×f2) is also set similarly. Sound signals above the mask level are quantized and compressed data are outputted. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_JP2001282295A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>JP2001282295A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_JP2001282295A3</originalsourceid><addsrcrecordid>eNrjZJB29XP2d3ENUnD0c1EAsz393BV8XUM8_F14GFjTEnOKU3mhNDeDkptriLOHbmpBfnxqcUFicmpeakm8V4CRgYGhkYWRkaWpozFRigB0MiCv</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>ENCODER AND ENCODING METHOD</title><source>esp@cenet</source><creator>TAKADO SEIICHI</creator><creatorcontrib>TAKADO SEIICHI</creatorcontrib><description>PROBLEM TO BE SOLVED: To obtain pleasant sound quality by improving the sound quality when reproduction is performed with an encoded sound signal. SOLUTION: The mask level ML of the sound signal is set. The peak of the sound signal is detected. Frequencies f3 (=n×f1) and f4 (=n×f2) which are (n) times as high as the peak frequencies (f1 and f2) are set. It is discriminated whether or not the sound pressure at the frequency f3 which is (n) times as high as peak frequency f1 is sound pressure which is almost 1/n time as high as the sound pressure d1 at the peak frequency f1. When the sound pressure f3 is 1/n time as high as the sound pressure d1 at the peak frequency f1, the mask level in a band including the peak frequency f3 is corrected from the mask level MLa to 0. The frequency f4 (=n×f2) is also set similarly. Sound signals above the mask level are quantized and compressed data are outputted.</description><edition>7</edition><language>eng</language><subject>ACOUSTICS ; BASIC ELECTRONIC CIRCUITRY ; CODE CONVERSION IN GENERAL ; CODING ; DECODING ; ELECTRICITY ; MUSICAL INSTRUMENTS ; PHYSICS ; SPEECH ANALYSIS OR SYNTHESIS ; SPEECH OR AUDIO CODING OR DECODING ; SPEECH OR VOICE PROCESSING ; SPEECH RECOGNITION</subject><creationdate>2001</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=20011012&DB=EPODOC&CC=JP&NR=2001282295A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20011012&DB=EPODOC&CC=JP&NR=2001282295A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAKADO SEIICHI</creatorcontrib><title>ENCODER AND ENCODING METHOD</title><description>PROBLEM TO BE SOLVED: To obtain pleasant sound quality by improving the sound quality when reproduction is performed with an encoded sound signal. SOLUTION: The mask level ML of the sound signal is set. The peak of the sound signal is detected. Frequencies f3 (=n×f1) and f4 (=n×f2) which are (n) times as high as the peak frequencies (f1 and f2) are set. It is discriminated whether or not the sound pressure at the frequency f3 which is (n) times as high as peak frequency f1 is sound pressure which is almost 1/n time as high as the sound pressure d1 at the peak frequency f1. When the sound pressure f3 is 1/n time as high as the sound pressure d1 at the peak frequency f1, the mask level in a band including the peak frequency f3 is corrected from the mask level MLa to 0. The frequency f4 (=n×f2) is also set similarly. Sound signals above the mask level are quantized and compressed data are outputted.</description><subject>ACOUSTICS</subject><subject>BASIC ELECTRONIC CIRCUITRY</subject><subject>CODE CONVERSION IN GENERAL</subject><subject>CODING</subject><subject>DECODING</subject><subject>ELECTRICITY</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>2001</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJB29XP2d3ENUnD0c1EAsz393BV8XUM8_F14GFjTEnOKU3mhNDeDkptriLOHbmpBfnxqcUFicmpeakm8V4CRgYGhkYWRkaWpozFRigB0MiCv</recordid><startdate>20011012</startdate><enddate>20011012</enddate><creator>TAKADO SEIICHI</creator><scope>EVB</scope></search><sort><creationdate>20011012</creationdate><title>ENCODER AND ENCODING METHOD</title><author>TAKADO SEIICHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2001282295A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2001</creationdate><topic>ACOUSTICS</topic><topic>BASIC ELECTRONIC CIRCUITRY</topic><topic>CODE CONVERSION IN GENERAL</topic><topic>CODING</topic><topic>DECODING</topic><topic>ELECTRICITY</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>TAKADO SEIICHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAKADO SEIICHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ENCODER AND ENCODING METHOD</title><date>2001-10-12</date><risdate>2001</risdate><abstract>PROBLEM TO BE SOLVED: To obtain pleasant sound quality by improving the sound quality when reproduction is performed with an encoded sound signal. SOLUTION: The mask level ML of the sound signal is set. The peak of the sound signal is detected. Frequencies f3 (=n×f1) and f4 (=n×f2) which are (n) times as high as the peak frequencies (f1 and f2) are set. It is discriminated whether or not the sound pressure at the frequency f3 which is (n) times as high as peak frequency f1 is sound pressure which is almost 1/n time as high as the sound pressure d1 at the peak frequency f1. When the sound pressure f3 is 1/n time as high as the sound pressure d1 at the peak frequency f1, the mask level in a band including the peak frequency f3 is corrected from the mask level MLa to 0. The frequency f4 (=n×f2) is also set similarly. Sound signals above the mask level are quantized and compressed data are outputted.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext_linktorsrc |
| identifier | |
| ispartof | |
| issn | |
| language | eng |
| recordid | cdi_epo_espacenet_JP2001282295A |
| source | esp@cenet |
| subjects | ACOUSTICS BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRICITY MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION |
| title | ENCODER AND ENCODING METHOD |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-06T10%3A11%3A55IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-epo_EVB&rft_val_fmt=info:ofi/fmt:kev:mtx:patent&rft.genre=patent&rft.au=TAKADO%20SEIICHI&rft.date=2001-10-12&rft_id=info:doi/&rft_dat=%3Cepo_EVB%3EJP2001282295A%3C/epo_EVB%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |