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Betamax (also known as Beta, as in its logo) is a consumer-level analog recording and cassette format of magnetic tape for video, commonly known as a video cassette recorder. It was developed by Sony and was released in Japan on May 10, 1975, [1] followed by the US in November of the same year. Betamax is widely considered to be obsolete ...
Beta waves were discovered and named by the German psychiatrist Hans Berger, who invented electroencephalography (EEG) in 1924, as a method of recording electrical brain activity from the human scalp. Berger termed the larger amplitude, slower frequency waves that appeared over the posterior scalp when the subject's eye were closed alpha waves.
Waveforms for each β. Spectra for each β. Frequency modulation synthesis (or FM synthesis) is a form of sound synthesis whereby the frequency of a waveform is changed by modulating its frequency with a modulator. The (instantaneous) frequency of an oscillator is altered in accordance with the amplitude of a modulating signal.
Pathology. Handwriting of a person affected by Parkinson's disease showing rhythmic tremor activity in the strokes. Generalized 3 Hz spike and wave discharges reflecting seizure activity. Specific types of neural oscillations may also appear in pathological situations, such as Parkinson's disease or epilepsy.
Nonlinear acoustics (NLA) is a branch of physics and acoustics dealing with sound waves of sufficiently large amplitudes. Large amplitudes require using full systems of governing equations of fluid dynamics (for sound waves in liquids and gases) and elasticity (for sound waves in solids). These equations are generally nonlinear, and their ...
The Environmental Audio Extensions (or EAX) are a number of digital signal processing presets for audio, present in Creative Technology Sound Blaster sound cards starting with the Sound Blaster Live and the Creative NOMAD / Creative ZEN product lines. Due to the release of Windows Vista in 2007, which deprecated the DirectSound3D API that EAX ...
The VHS ( Video Home System) [1] [2] [3] is a standard for consumer-level analog video recording on tape cassettes, invented in 1976 by the Victor Company of Japan (JVC). It was the dominant home video format throughout the tape media period in the 1980s and 1990s. [4] Magnetic tape video recording was adopted by the television industry in the ...
Frequency modulation ( FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing . In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the ...
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