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Most smartphones in 2020 include at least one FBAR-based duplexer or filter and some 4/5G products may even include 20–30 functionalities based on FBAR technology mainly due to the increased complexity of radio frequency front end (RFFE, RF front end) electronics – both receiver and transmitter paths – and the antenna/antenna system ...
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 ...
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.
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 ...
The Regal Musical Instrument Company is a former US musical instruments company and current brand owned by Saga Musical Instruments.Regal was one of the largest manufacturers in the 1930s and became known for a wide range of resonator stringed instruments, including guitars, mandolins, and ukuleles.
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.
Acoustic enhancement is a subtle type of sound reinforcement system used to augment direct, reflected, or reverberant sound. While sound reinforcement systems are usually used to increase the sound level of the sound source (like a person speaking into a microphone, or musical instruments in a pop ensemble), acoustic enhancement systems are typically used to increase the acoustic energy in the ...