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US 6,026,928 AGranted
Apparatus and method for reduced distortion loudspeakers
OwnerAshok A. Maharajinventor
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OwnerAshok A. Maharajinventor
Estimating the term…
Method and apparatus applied to loudspeakers of the type having an electrically driven diaphragm in an acoustic housing to reduce distortion from two sources. 1. Loss of high frequencies when sound from different regions of the diaphragm travel paths of different lengths and neutralize each other when they meet out of phase. 2. Noise generated primarily by the central region of the diaphragm when driven at high power. A compensating or phase plug is suspended axially within the housing adjacent the central region of the diaphragm. The plug, in cooperation with the walls of the housing, directs the sound through paths of uniform length to reduce loss of high frequencies. The plug has a sound absorbing inner portion adjacent the central portion of the diaphragm for absorbing the noise generated by the central portion at high power.
A loudspeaker comprising:
In a loudspeaker having a housing defining a sound chamber having side walls, a central axis, an open mouth for emitting sound therefrom at a first end of said axis, and an opposed second end of said axis, an electrically driven diaphragm contained within said housing adjacent said second end, the diaphragm having a front surface facing said mouth, a central region, and a peripheral region adjacent to, and surrounding, said central region, a method for reducing distortion comprising:
Dependencies are inferred from the claim text.