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  2. List of Turtle Beach Corporation products - Wikipedia

    en.wikipedia.org/wiki/List_of_Turtle_Beach...

    Many models are console-specific, but share the same branding and can often be used across platforms (e.g. the Stealth 300 has a model for both the Xbox One and the PlayStation 4, but both are technically compatible with one another and the Nintendo Switch, and PC, etc.). [3]

  3. Continuous Tone-Coded Squelch System - Wikipedia

    en.wikipedia.org/wiki/Continuous_Tone-Coded...

    The most common set of supported tones is a set of 39 tones including all tones with Motorola PL codes, except for the tones 8Z, 9Z, and 0Z (zero-Z). [6] The lowest series has adjacent tones that are roughly in the harmonic ratio of 2 0.05 to 1 (≈1.035265), while the other two series have adjacent tones roughly in the ratio of 10 0.015 to 1 ...

  4. Turtle Beach Corporation - Wikipedia

    en.wikipedia.org/wiki/Turtle_Beach_Corporation

    The Turtle Beach Corporation (commonly referred to as Turtle Beach) is an American gaming accessory manufacturer [citation needed] based in San Diego, California.The company has roots dating back to the 1970s where it developed sound cards, MIDI synthesizers, and various audio software packages and network audio devices.

  5. DTMF - Wikipedia

    en.wikipedia.org/wiki/DTMF

    DTMF was first developed in the Bell System in the United States, and became known under the trademark Touch-Tone for use in push-button telephones supplied to telephone customers, starting in 1963. DTMF is standardized as ITU-T Recommendation Q.23. [ 2 ]

  6. List of Casio keyboards - Wikipedia

    en.wikipedia.org/wiki/List_of_Casio_keyboards

    Has "Tone Editor" with detune, delay, attack/decay and release. Has sustain pedal input. Not velocity sensitive. Also released as the PMP-600 as part of Casio's "Professional" line. [43] CT 657 1989 61 full 110 12 D (x6) - Has "Tone Editor" with delay, attack/decay and release. [44] CT 660 1988 61 full 465 10 D (x6) in/out/thru

  7. Contour (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Contour_(linguistics)

    Such sounds may be tones, vowels, or consonants. Many tone languages have contour tones, which move from one level to another. For example, Mandarin Chinese has four lexical tones. The high tone is level, without contour; the falling tone is a contour from high pitch to low; the rising tone a contour from mid pitch to high, and, when spoken in ...

  8. Tone (linguistics) - Wikipedia

    en.wikipedia.org/wiki/Tone_(linguistics)

    Tone is the use of pitch in language to distinguish lexical or grammatical meaning—that is, to distinguish or to inflect words. [1] All oral languages use pitch to express emotional and other para-linguistic information and to convey emphasis, contrast and other such features in what is called intonation, but not all languages use tones to distinguish words or their inflections, analogously ...

  9. Dial tone - Wikipedia

    en.wikipedia.org/wiki/Dial_tone

    In the United States, the standard "city" dial tone was a 600 Hz tone that was amplitude-modulated at 120 Hz. [3] Some dial tones were simply adapted from 60 Hz AC line current. In the UK, the standard Post Office dialing tone was 33 Hz; it was generated by a motor-driven ringing machine in most exchanges and by a vibrating-reed generator in ...