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The ultrasound within tissue consists of very high frequency sound waves, between 800,000 Hz and 20,000,000 Hz, which cannot be heard by humans. Some of the advantages of ultrasound as a diagnostic and therapeutic tool include its safety profile, lack of radiation, portability, and low cost. [ 4 ]
An idealized and extreme smiley face curve shown using a 29-band graphic equalizer. A smiley face curve or mid scoop [1] in audio signal processing is a target frequency response curve characterized by boosted low and high frequencies coupled with reduced midrange frequency power.
A "rumble filter" is a high-pass (low cut) filter with a cutoff typically in the 20 to 40 Hz range; this is the low frequency end of human hearing. "Rumble" is a type of low-frequency noise produced in record players and turntables, particularly older or low quality models.
The brown note (sometimes brown tone or frequency), is a hypothetical infrasonic frequency capable of causing fecal incontinence by creating acoustic resonance in the human bowel. Considered an urban myth , the name is a metonym for the common color of human faeces .
10.70 FM radio: radio (filter) Most common crystal or ceramic resonator for first intermediate frequency filter in FM radio; common in other applications due to ubiquity and low cost, filter bandwidth varies (e.g. ±250/230/180/150/110 kHz to both sides from the 10.7 MHz frequency) 11.0592 230400
Pulsed radiofrequency is the technique whereby radio frequency (RF) oscillations are gated at a rate of pulses (cycles) per second (one cycle per second is known as a hertz (Hz)). Radio frequency energies occupy 1.0 × 10 4 Hz to 3.0 × 10 11 Hz of the electromagnetic spectrum.
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Support for playing music from external streaming platforms such as Pandora, Napster, Last.fm and Sirius were also added. The devices in general have two operating modes; either standalone where the device connects to an internet streaming service directly, or to a local computer running the Logitech Media Server or a network-attached storage ...