Search results
Results from the WOW.Com Content Network
As of 2022 there are two known structures for thin-film bulk acoustic wave (BAW) resonators: free-standing [20] and solidly mounted (SMR) resonators. [21] In a free-standing resonator structure air is used to separate the resonator from the substrate/surrounding.
The term "acoustic resonance" is sometimes used to narrow mechanical resonance to the frequency range of human hearing, but since acoustics is defined in general terms concerning vibrational waves in matter, [1] acoustic resonance can occur at frequencies outside the range of human hearing.
In 1987, Amar Bose and William Short won the Inventor of the Year award from Intellectual Property Owners for the waveguide loudspeaker system. [3] [4] A model with a CD player was added in 1992. The "Acoustic Wave Music System II" was released in 2006 and added MP3 CD playback, a "Boselink" port and a headphone jack. This system was judged to ...
The exhaust pipes in automobile exhaust systems are designed as acoustic resonators that work with the muffler to reduce noise, by making sound waves "cancel each other out". [7] The "exhaust note" is an important feature for some vehicle owners, so both the original manufacturers and the after-market suppliers use the resonator to enhance the ...
Thin-film bulk acoustic resonator This page was last edited on 16 October 2018, at 13:26 (UTC). Text is available under the Creative Commons Attribution ...
When resonators are aged or temperature cycled, the contaminants can move in the chambers, and transfer onto or off of the resonators. [10] [29] The change in mass on the resonators can produce hysteresis of thousands of ppm, which is unacceptable for virtually all frequency reference applications.
A simple panel resonator can be built to hang on a wall by building a wooden frame, adding several inches of mineral wool to the inside, and fitting a sheet of plywood over the top attached only at the edges. A small gap should be left between the panel and the acoustic insulation so that the panel is free to resonate.
Since the resonance chamber is an enclosed space that has an opening where the sound wave enters and exits after bouncing off of the internal walls producing resonance, commonly acoustic resonance as in many musical instruments (see Sound board (music)), the material of the chamber, particularly that of the actual internal walls, its shape and ...