Topic
Electrostatic loudspeaker
About: Electrostatic loudspeaker is a research topic. Over the lifetime, 298 publications have been published within this topic receiving 2220 citations.
Papers published on a yearly basis
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Papers
TL;DR: In this paper, a transducer array is used for sound reproduction of a new type of loudspeaker based on the nonlinear acoustics of sound wave interaction in air, where a finite amplitude ultrasound wave that can be amplitude modulated by any audio signal is radiated from a transducers array into air as the primary wave.
Abstract: This work was done to devise a new type of loudspeaker. The theory for sound reproduction of this loudspeaker is based on nonlinear acoustics of sound wave interaction in air. A finite amplitude ultrasound wave that can be amplitude modulated by any audio signal is radiated from a transducer array into air as the primary wave. As a result, an audio signal is produced in the air because of the self‐demodulation effect of the AM sound wave due to the nonlinearity of the air. It is possible to get a flat characteristic of reproduced sound pressure by using an equalizer. In some fundamental experiments the characteristic of the reproduced sound pressure is not quite flat due to an imperfect transducer array. Improvement of the transducer makes it possible to get a flat characteristic. A special feature of this loudspeaker is its very sharp directivity pattern, which makes it possible to realize a sound spotlight.
413 citations
Journal Article•
87 citations
Patent•
4 Sep 1973
TL;DR: In this article, a single diaphragm electrostatic loudspeaker with multiple opposing pairs of electrodes which are graded in size is described, and the speaker further includes means for electrically controlling the high frequency response of each electrode pair so as to achieve an overall uniform response.
Abstract: A single diaphragm electrostatic loudspeaker having multiple opposing pairs of electrodes which are graded in size, the speaker further including means for electrically controlling the high frequency response of each electrode pair so as to achieve an overall uniform response. The diaphragm is acoustically damped and selectively tuned by mass loading to achieve inertia control below a designated frequency, thus extending the loudspeaker''s useful response into the low frequency range. A typical form and construction for the loudspeaker is disclosed which also provides for relatively uniform sound dispersion throughout designated horizontal and vertical angles of coverage.
74 citations
TL;DR: In this paper, a moving-coil loudspeaker system incorporating motional feedback operable at high frequencies is presented, i.e. above about 1000 Hz. The feedback signal is developed by a tiny piezo-electric accelerometer mounted together with a charge amplifier directly on the loudspeaker coil, in alignment with the turns of the coil.
Abstract: A moving-coil loudspeaker system incorporating motional feedback operable at high frequencies, i.e. above about 1000 Hz. The feedback signal is developed by a tiny piezo-electric accelerometer mounted together with a charge amplifier directly on the loudspeaker coil, in alignment with the turns of the coil. The coil comprises two layers of rectangular, anodized aluminum wire wound tightly to form an effectively integral mass. The system includes a suitable stabilizing frequency compensation network.
43 citations
TL;DR: A coaxial type composite loudspeaker has at least three coaxially arranged loudspeakers of different opening diameters and different allocated frequency bands and can reduce the synergistic interference among the component loudspeakers.
Abstract: A coaxial type composite loudspeaker has at least three coaxially arranged loudspeakers of different opening diameters and different allocated frequency bands. This composite loudspeaker can reduce the synergistic interference among the component loudspeakers to prevent deterioration of the characteristics of the respective component loudspeakers and also can centralize the sound sources of the component loudspeakers upon a single axis to enhance the localization of sound image and improve the directivity on the horizontal plane.
38 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2020 | 2 |
| 2019 | 8 |
| 2018 | 3 |
| 2017 | 4 |
| 2016 | 6 |