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  2. Tone indicator - Wikipedia

    en.wikipedia.org/wiki/Tone_indicator

    On the internet, one or more tone indicators may be placed at the end of a message.A tone indicator on the internet often takes the form of a forward slash (/) followed by an abbreviation of a relevant adjective; alternatively, a more detailed textual description (e. g., / friendly, caring about your well-being) may be used.

  3. Call-progress tone - Wikipedia

    en.wikipedia.org/wiki/Call-progress_tone

    The tone frequencies, as defined by the precise tone plan, are selected such that harmonics and intermodulation products will not cause an unreliable signal. No frequency is a multiple of another, the difference between any two frequencies does not equal any of the frequencies, and the sum of any two frequencies does not equal any of the ...

  4. Recorder warning tone - Wikipedia

    en.wikipedia.org/wiki/Recorder_warning_tone

    In the United States, the recorder warning tone is a half-second burst of 1400 Hz applied every 15 seconds. The recorder warning tone is required by law to be generated as an integral part of any recording device used for the purpose of recording telephone calls and is required to be not under the control of the calling party.

  5. Template:Tone indicator - Wikipedia

    en.wikipedia.org/wiki/Template:Tone_indicator

    Displays a tone indicator with hover description Template parameters [Edit template data] Parameter Description Type Status Tone indicator 1 The tone indicator to display, or a valid alias Suggested values con g gq hj hyp j lh lhj nay nbh neg nm nsrs pos ref s srs Default s Example s String required But why? Inferring meaning, tone and intent of a textual message over the internet can be ...

  6. Special information tone - Wikipedia

    en.wikipedia.org/wiki/Special_information_tone

    The third tone segment may be of long or short duration but is limited to the lower frequency state. Currently, the third tone segment has been assigned both a fixed long duration and a fixed lower frequency. This fixed assignment of the third tone provides a reference or calibration point for detection devices. [1] [2]

  7. Template:Tone indicator/doc - Wikipedia

    en.wikipedia.org/wiki/Template:Tone_indicator/doc

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  8. Acoustical measurements and instrumentation - Wikipedia

    en.wikipedia.org/wiki/Acoustical_measurements...

    This signal conditioning may include amplification, filtering, sensor excitation, and input configuration. Another consideration is the frequency range of the instrumentation. It should be large enough to cover the frequency range of signal interest, taking into account the range of the sensor.

  9. Clipping (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Clipping_(signal_processing)

    Clipping may occur when a signal is recorded by a sensor that has constraints on the range of data it can measure, it can occur when a signal is digitized, or it can occur any other time an analog or digital signal is transformed, particularly in the presence of gain or overshoot and undershoot.