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  2. List of musical symbols - Wikipedia

    en.wikipedia.org/wiki/List_of_musical_symbols

    Musical symbols are marks and symbols in musical notation that indicate various aspects of how a piece of music is to be performed. There are symbols to communicate information about many musical elements, including pitch, duration, dynamics, or articulation of musical notes; tempo, metre, form (e.g., whether sections are repeated), and details about specific playing techniques (e.g., which ...

  3. Time–frequency analysis for music signals - Wikipedia

    en.wikipedia.org/wiki/Time–frequency_analysis...

    Music is a type of sound that has some stable frequencies in a time period. Music can be produced by several methods. For example, the sound of a piano is produced by striking strings, and the sound of a violin is produced by bowing. All musical sounds have their fundamental frequency and overtones. Fundamental frequency is the lowest frequency ...

  4. Signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Signals_intelligence

    A radio signal that triggers navigational beacons could be a radio landing aid for an airstrip or helicopter pad that is intended to be low-profile. Patterns do emerge. A radio signal with certain characteristics, originating from a fixed headquarters, may strongly suggest that a particular unit will soon move out of its regular base.

  5. List of intelligence gathering disciplines - Wikipedia

    en.wikipedia.org/wiki/List_of_intelligence...

    Signals intelligence (SIGINT) are gathered from interception of signals. Communications intelligence (COMINT) Electronic intelligence (ELINT) – gathered from electronic signals that do not contain speech or text (which are considered COMINT)

  6. MUSIC (algorithm) - Wikipedia

    en.wikipedia.org/wiki/MUSIC_(algorithm)

    The resulting algorithm was called MUSIC (MUltiple SIgnal Classification) and has been widely studied. In a detailed evaluation based on thousands of simulations, the Massachusetts Institute of Technology's Lincoln Laboratory concluded in 1998 that, among currently accepted high-resolution algorithms, MUSIC was the most promising and a leading ...

  7. Glossary of music terminology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_music_terminology

    A musician who plays any instrument with a keyboard. In Classical music, this may refer to instruments such as the piano, pipe organ, harpsichord, and so on. In a jazz or popular music context, this may refer to instruments such as the piano, electric piano, synthesizer, Hammond organ, and so on. Klangfarbenmelodie (Ger.)

  8. Foreign instrumentation signals intelligence - Wikipedia

    en.wikipedia.org/wiki/Foreign_instrumentation...

    Since it deals with signals that have communicational content, it is a subset of Communications Intelligence (COMINT), which, in turn, is a subset of SIGINT. Unlike general COMINT signals, the content of FISINT signals is not in regular human language, but rather in machine to machine (instrumentation) language or in a combination of regular ...

  9. Natural (music) - Wikipedia

    en.wikipedia.org/wiki/Natural_(music)

    In modern Western music notation, a natural (♮) is a musical symbol that cancels a previous sharp or flat on a note in the written music. The natural indicates that the note is at its unaltered pitch. [1] ♮