 Highly directional sound projector and receiver apparatus |
| We claim: 1. An acoustic apparatus equally suitable for use in both a sound projector mode and a ... |
|
| Subwoofer speaker system |
| The present invention includes the recognition of various problems found in previous designs. P... |
|
| Loudspeaker system and method for disbursing sounds waves |
| According to the apparatus and method of the present invention, a reflector screen is provided ... |
|
| Acoustic apparatus |
| Accordingly, a primary object of the present invention is to provide an acoustic apparatus with a ... |
|
| Apparatus and method for examining a body, particularly useful in tomography |
| An object of the present invention is to provide apparatus and method for examining a body having ... |
|
| Amplifier arrangement for use as a line driver |
| Referring now to the drawing, FIG. 1 shows an amplifier arrangement 100 having an input point 11 ... |
|
| Circuit arrangement for transmitting audio signals |
| It is an object of the invention to provide simple means enabling said arrangements to be combined ... |
|
| Overdrive protection clamp scheme for feedback amplifiers |
| A low-noise, low-distortion clamping scheme is presented that solves the problems noted above. The ... |
|
| Method for shifting the frequency of signals |
| It is the object of the present invention to avoid such disadvantages and to propose a circuit and ... |
|
|
Linear phase response multi-way speaker system
| Details |
Inventors: Ishii, Shinichiro; Kakao, Kanji; Ueno, Takafumi; Kimura, Jun;
Assignee: Matsushita Electric Industrial Co., Ltd. (Osaka, JA)
Primary Examiner: Stellar; George G.
Assistant Examiner:
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher
A multi-way speaker system comprising a tweeter, a squawker and a woofer wherein each of the speakers is arranged in staggered relation along their radiating axis at a predetermined spacing from each other and provided with an appropriate crossover network coupled to an input terminal of each of the speaker whereby sound pressure-frequency characteristics of a synthesized sound wave resulting from the synthesis of respective sound waves radiated from respective speakers are rendered flat, and phase frequency characteristics of said synthesized sound wave are rendered linear, over an entire band to improve a waveform transmission characteristic of an overall speaker system. |
|
DETAILED DESCRIPTION What is claimed is: 1.
A multi-way speaker system comprising a low pass filter, a high pass filter each having a predetermined slope in the stop band and a band pass filter having a single resonance characteristic each for dividing an input audio signal to predetermined frequency bands, and a woofer, a tweeter and a squawker each connected to an output terminal of said low pass filter, said high pass filter and said band pass filter respectively, said tweeter being stepped back from said woofer such that when said woofer and said tweeter are driven by outputs of said low pass filter and said high pass filter the phases of sound waves radiated from said woofer and said tweeter are reverse at a listening area in front of said woofer, said tweeter and said squawker at the center frequency in the overlap region of the sound pressure-frequency characteristics for said woofer and said tweeter, said squawker being arranged such that when said squawker is driven by an output from said band pass filter a phase-frequency characteristic of sound wave radiated from said squawker, at said listening area, is laid substantially at the center of a phase-frequency characteristic of the sound wave synthesized from sound waves radiated from said tweeter and said woofer.
2.
A multi-way speaker system according to claim 1 wherein said band pass filter exhibits a single resonance characteristic having a resonant point at a frequency substantially equal to the crossover frequency of said low pass filter and high pass filter, said squawker being arranged such that the phase-frequency characteristic of the sound wave radiated from said squawker, at said listening area, is laid substantially at the center of the phase-frequency characteristic of the sound wave synthesized from the sound waves radiated from said woofer and said tweeter with the separation of approximately 90.
degree.
therefrom.
3.
A multi-way speaker system according to claim 1 further comprising an additional band pass filter having a single resonance characteristic and an additional squawker connected to an output terminal of said additional band pass filter
|
| Related patents |
|
|
Sound reproducing with remote amplifying transducer
OF PREFERRED EMBODIMENTS With reference now to the drawing and more particularly FIG. 1 thereof, there is shown a block-pictorial diagram of a system according to the ...
|
|
|
Audio signal processing system
What is claimed is: 1. An audio signal processing system of the type for generating ambient effects, said system comprising: at least two channels for respectively ...
|
|
|
Method of improving the acoustics of a hall
I claim: 1. A method of improving the acoustics of a room having a performance area in which sound is generated from a sound source and an audience listening area which ...
|
|
|
Cabinet for loudspeaker
It is an object of the present invention to provide a cabinet for a loudspeaker, that does not cause sound including a distortion due to air passing through the duct. A...
|
|
|
Loudspeaker structure
I claim: 1. An electro acoustical transducer structure, comprising; (a) a base enclosure of approximately truncated pyramidal shape, having sides, a top and a bottom, (b)...
|
|
|
Stereo electroacoustical transducing
What is claimed is: 1. Stereo electroacoustical transducing apparatus comprising, dual-channel woofer means mounted on a baffle inside a dual-channel woofer enclosure ...
|
|
|
Multiple chamber loudspeaker system
It is an important object of this invention to provide an improved dual-chamber ported loudspeaker system. According to the invention, there is enclosure means for ...
|
|
|
Speaker system
An object of the present invention is to provide a speaker system which can be installed in a narrow space and is adapted to efficiently reproduce low sounds. Another ...
|
|
|
Electric acoustic converter
It is the object of the present invention to provide an electric acoustic converter generative of tones very close in quality factor (Q) to those generated by natural ...
|
|
|
Mid-range loudspeaker assembly propagating forward and backward sound waves in phase
Accordingly, it is an object of the present invention to provide a loudspeaker which reduces intermodulation distortion. It is another object of the present invention to ...
|
|
|
Audio Signal Processing 
