Echo cancellation circuit based on discrete component and audio equipment
The utility model discloses an echo cancellation circuit based on discrete components and audio equipment, and the echo cancellation circuit comprises a microphone module which is used for collecting sound signals; the loudspeaker is used for outputting a playing signal; the echo cancellation module...
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| creator | LIANG YONGZHI WANG RIXIANG |
| description | The utility model discloses an echo cancellation circuit based on discrete components and audio equipment, and the echo cancellation circuit comprises a microphone module which is used for collecting sound signals; the loudspeaker is used for outputting a playing signal; the echo cancellation module is respectively connected with the positive electrode and the negative electrode of the loudspeaker through two filter circuits, and is used for collecting playing signals output by the positive electrode and the negative electrode of the loudspeaker and respectively carrying out filtering frequency selection on the playing signals of the positive electrode and the negative electrode through different filter circuits; and the codec is used for carrying out audio comparison on the filtered and frequency-selected positive and negative electrode signals and the sound signals acquired by the microphone module so as to carry out echo cancellation on the sound signals to realize squelch processing. According to the util |
| format | Patent |
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According to the util</description><language>chi ; eng</language><subject>DEAF-AID SETS ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS ; PUBLIC ADDRESS SYSTEMS</subject><creationdate>2022</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=20220429&DB=EPODOC&CC=CN&NR=216414578U$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220429&DB=EPODOC&CC=CN&NR=216414578U$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LIANG YONGZHI</creatorcontrib><creatorcontrib>WANG RIXIANG</creatorcontrib><title>Echo cancellation circuit based on discrete component and audio equipment</title><description>The utility model discloses an echo cancellation circuit based on discrete components and audio equipment, and the echo cancellation circuit comprises a microphone module which is used for collecting sound signals; the loudspeaker is used for outputting a playing signal; the echo cancellation module is respectively connected with the positive electrode and the negative electrode of the loudspeaker through two filter circuits, and is used for collecting playing signals output by the positive electrode and the negative electrode of the loudspeaker and respectively carrying out filtering frequency selection on the playing signals of the positive electrode and the negative electrode through different filter circuits; and the codec is used for carrying out audio comparison on the filtered and frequency-selected positive and negative electrode signals and the sound signals acquired by the microphone module so as to carry out echo cancellation on the sound signals to realize squelch processing. 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| language | chi ; eng |
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| subjects | DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS PUBLIC ADDRESS SYSTEMS |
| title | Echo cancellation circuit based on discrete component and audio equipment |
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