Hi,
I am using an relatively high power exciter (electromagnetic speaker driving a plastic plate instead of a cone) of Visaton, my application is to transfer sound tones to a solid. But its size is big and I want to find alternative to reduce the size.
Is there any planar exciter to purchase or can be built?
The MEMS speaker or piezoelectric transducer is small, is it possible to couple its sound to solid?
or other?
Thanks!
Danny
I am using an relatively high power exciter (electromagnetic speaker driving a plastic plate instead of a cone) of Visaton, my application is to transfer sound tones to a solid. But its size is big and I want to find alternative to reduce the size.
Is there any planar exciter to purchase or can be built?
The MEMS speaker or piezoelectric transducer is small, is it possible to couple its sound to solid?
or other?
Thanks!
Danny
From the limited information in your description, these seem like they might be interesting.
https://www.ces.tech/innovation-awards/honorees/2023/honorees/t/thin-actuator-sound-solution.aspx
"LG Display's Thin Actuator Sound Solution is an innovation based upon the piezoelectric technology and achieves a much thinner and lighter form factor compared to conventional speakers. Sound is produced by utilizing various car body materials as a diaphragm."
https://www.theverge.com/2022/11/21/23470667/lg-display-vibrating-car-speaker-audio-ces
"LG Display has developed a new “invisible” speaker technology for vehicles that uses a passport-sized vibrating panel to generate sound. It was developed with an unnamed “global audio company” and is expected to be ready for car interiors next year for installation in places like the dashboard and headliner.
The south-Korean tech giant’s Thin Actuator Sound Solution is being promoted as a replacement for traditional speaker systems within cars and other vehicles. Unlike current in-car speaker systems that use heavy components like voice coils, cones, and magnets, the Thin Actuator Sound Solution uses LG Display’s film-type exciter technology to generate sound by vibrating off display panels and various materials within the vehicle, which LG Display claims results in a “rich, 3D immersive sound experience.”
The panel itself is 2.5-mm thick (that’s about two coins stacked) and measures 150mm x 90mm (5.9 x 3.5 inches)"
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These are larger, but made to drive more rigid panels than a typical exciter, so may still be interesting.
https://audioxpress.com/news/contin...-sennheiser-software-power-morgan-sports-cars
"Continental’s actuator system abandons conventional speaker technology by exciting selected surfaces in the vehicle interior to produce sound." . . . "Continental says that Ac2ated Sound not only produces high audio quality but also enables a reduction of the weight and space taken up by up to 90 percent."
https://www.ces.tech/innovation-awards/honorees/2023/honorees/t/thin-actuator-sound-solution.aspx
"LG Display's Thin Actuator Sound Solution is an innovation based upon the piezoelectric technology and achieves a much thinner and lighter form factor compared to conventional speakers. Sound is produced by utilizing various car body materials as a diaphragm."
https://www.theverge.com/2022/11/21/23470667/lg-display-vibrating-car-speaker-audio-ces
"LG Display has developed a new “invisible” speaker technology for vehicles that uses a passport-sized vibrating panel to generate sound. It was developed with an unnamed “global audio company” and is expected to be ready for car interiors next year for installation in places like the dashboard and headliner.
The south-Korean tech giant’s Thin Actuator Sound Solution is being promoted as a replacement for traditional speaker systems within cars and other vehicles. Unlike current in-car speaker systems that use heavy components like voice coils, cones, and magnets, the Thin Actuator Sound Solution uses LG Display’s film-type exciter technology to generate sound by vibrating off display panels and various materials within the vehicle, which LG Display claims results in a “rich, 3D immersive sound experience.”
The panel itself is 2.5-mm thick (that’s about two coins stacked) and measures 150mm x 90mm (5.9 x 3.5 inches)"
------------------
These are larger, but made to drive more rigid panels than a typical exciter, so may still be interesting.
https://audioxpress.com/news/contin...-sennheiser-software-power-morgan-sports-cars
"Continental’s actuator system abandons conventional speaker technology by exciting selected surfaces in the vehicle interior to produce sound." . . . "Continental says that Ac2ated Sound not only produces high audio quality but also enables a reduction of the weight and space taken up by up to 90 percent."