US Patent 7447316 Speaker system
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Edits on 15 Sep, 2023
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Patent abstract
A speaker system includes a main speaker and a subordinate speaker arranged around the main speaker. A pseudo-spherical wave is generated around the main speaker as a whole such that both speakers are vibrated in the frequency range of piston vibration and are in phase and that the propagation speed of a sound wave produced by the vibration of the subordinate speaker is preferably lower than the propagation speed of a sound wave produced by the vibration of the main speaker.
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US Patent 07447316 Speaker system US Patent 7447316 Speaker system
Infobox
Patent Number
0744731600
Patent Number
744731600
Edits on 24 May, 2023
Golden AI
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Official Website
Edits on 5 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
074473160
Date of Patent
November 4, 2008
0Patent Application Number
107330400
Date Filed
December 11, 2003
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
074473160
Date of Patent
November 4, 2008
0Patent Application Number
107330400
Date Filed
December 11, 2003
0Official Website
Patent Primary Examiner
Edits on 14 Jun, 2022
Golden AI
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Edits on 1 Dec, 2021
Golden AI
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Infobox (+7 properties)
US Patent 07447316 Speaker system
Infobox
Is a
Patent jurisdiction
Patent number
07447316
Date of patent
November 4, 2008
Patent application number
10733040
Date Filed
December 11, 2003
Patent primary examiner
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