Back to results
US 6,320,971 B1Granted
Speaker system and a method for improving sound quality thereof
OwnerKatsutoshi Tozawainventor
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
OwnerKatsutoshi Tozawainventor
Estimating the term…
A speaker system suppresses standing waves generated in the system and reproduces clear and dynamic bass sound. The system includes a cabinet formed of acoustic isolation walls, and at least one partition wall situated inside the cabinet to form a space by surrounding the space. The partition wall suppresses the standing waves generated inside the cabinet and is formed of a material having high internal loss. The space has a total capacity more than one tenth of a capacity of the cabinet, wherein a closed end of the partition wall is located between one-half and four-fifths of a distance from one end to the other end, and an opening area of the same partition wall is located at a side opposite to the closed end in a longitudinal direction of the cabinet. The opening area is located between four-fifths and five fifths of a distance from one end to the other end.
A speaker system for a speaker comprising,
A method of improving sound quality of a speaker system having a cabinet formed of an acoustic isolation wall, said cabinet having a maximum length L among width, depth and height of an inside of the cabinet, comprising forming at least one partition wall to form a space for suppressing standing waves generated inside the cabinet by a sound source and a closed end portion surrounding the space, at least a part of said partition wall being formed of a material which has high internal loss and a density per volume greater than 0.1 g/cm3, and said closed end portion being formed of at least one of the partition wall and the acoustic isolation wall wherein said material has a density per area from 0.01 g/cm2 to 0.21 g/cm2 and a characteristic of semi-transmission for at least two kinds of standing waves of wavelengths of the length L and twice of said length L among the standing waves, said space is a substatially closed space, and a surface of said partition wall directed toward the sound source is substantially flat and uninterrupt by any protrusion.
A speaker system for a speaker comprising,
A method of suppressing standing waves generated inside a cabinet by a sound source, said cabinet being formed of an acoustic isolation wall, said cabinet comprising forming at least one partition wall to form a space and a closed end portion surrounding the space, at least a part of said partition wall being formed of a material which has high internal loss and a density per volume greater than 0.1 g/cm3, and said closed end portion being formed of at least one of the partition wall and the acoustic isolation wall, wherein said material has a density per area from 0.01 g/cm2 to 0.21 g/cm2 and a characteristic of semi-transmission for standing waves, said space is a closed space, and a surface of said partition wall directed toward the sound source is substantially flat and uninterrupt by any protrusion.
Dependencies are inferred from the claim text.