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The Cool Sound of Tubes - IEEE Spectrum

    https://spectrum.ieee.org/the-cool-sound-of-tubes
    A modern OTL is the Transcendent Sound amplifier, which uses eight EL509 power tetrodes to produce 80 W into an 8-(omega) speaker load and is one of the few modern tube audio devices to be covered ...

Introduction to RC coupled Audio Frequency Triode …

    https://colinjs.com/elec/audio/triodeamp.htm
    Audio Frequency Amplification. Audio-frequency amplifiers are intended to amplify frequencies (corresponding to the number of air pressure variations that occur per second) in the range that the human ear can hear. Frequency is associated directly with musical pitch, i.e. as pitch goes from low to high, so does the frequency.

The 11 Greatest Vacuum Tubes You’ve Never Heard Of - …

    https://spectrum.ieee.org/the-11-greatest-vacuum-tubes-youve-never-heard-of
    An even higher-frequency version of the ring-bar tube is used in a phased-array radar on remote Shemya Island, about 1,900 km off the coast of Alaska. Known as Cobra Dane , the radar monitors non ...

FFT audio frequency spectrum analysis with processing …

    https://www.youtube.com/watch?v=WDHINLFxt2s
    More info and Processing code at: http://therandomlab.blogspot.com.es/2013/05/fft-audio-frequency-analysis-with.html

Biologically Resonant Harmonizer , Sound Frequency …

    https://www.youtube.com/watch?v=wb2ThzIZoDo
    Biologically Resonant Harmonizer ,Sound Frequency Healing Device Note* Format for this unit has changed ! We have come out with a variance of this product. ...

The Secret Power of Sound, Vibrations, and Frequencies

    https://universe-inside-you.com/sound-vibration-frequency/
    In 2015 a device built by a team from Spain successfully levitated and manipulated small objects with just sounds. Sound, Frequency, and Vibrations can Reprogram our DNA. One other recent discovery made by scientists was how sound, frequencies, and vibrations have the power to program or reprogram our DNA.

Best Frequency Generator - frequencyrising.com

    https://www.frequencyrising.com/frequency-generator.html
    A frequency generator, referred to by some as a "Rife machine", is a research instrument used by practitioners, clinical researchers, and private researchers alike, in an attempt to influence the body in making chemical changes by using bio-frequencies, or "sound waves". Frequency generators work on the principle of sympathetic resonance, which ...

Amazon.com: HUSO+ 2.0 Home Frequency and Sound …

    https://www.amazon.com/Huso-Frequency-Sound-Therapy-Machine/dp/B07G7PRM73
    The HUSO sound frequency device is a wellness device in the alternative and complementary medicine field that allows the body to return to a healthy state. It is designed to re-align and re-balance the body's electromagnetic field by working at …

Vacuum Tubes versus Solid-State Transistors

    https://theaudioarchive.com/TAA_Resources_Tubes_versus_Solid_State.htm
    Vacuum tubes – Advantages. Highly linear without negative feedback, specially some small-signal types. Clipping is smooth, which is widely considered more musical than transistors. Tolerant of overloads and voltage spikes. Characteristics highly independent of temperature, greatly simplifies biasing.

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