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Entries found for search: pitch

concert pitch : Established by ISO in 1955, the agreed reference frequency of 440Hz, for the note A above middle-C, notated A=440.

pitch-transpose : See pitch-shift.

pitch-to-MIDI-converter : This translates a monophonic musical line, such as singing or a reed instrument, into a stream of MIDI data.

pitch tracking : A misleading term meaning frequency-to-voltage conversion. A pitch tracker will accept a complex periodic signal and extract from this the fundamental frequency. It will then convert this frequency into a direct voltage output that can be used as a control voltage in a synthesizer.

pitch-shift : To change the pitch of a sound without changing its duration, as opposed to pitch-transpose, which changes both. Some people use the two terms interchangeably. Also called time-stretching. See also frequency shifter.

pitch-bend : A shift in a note’s pitch, usually in small increments, caused by the movement of a pitch-bend wheel or lever; also, the MIDI data used to create such a shift. MIDI Pitch-Bend messages are a type of MIDI channel message, but not a MIDI continuous controller message. See bend.

pitch : (1) A sound characteristic of repeating vibration at a specific frequency. Unpitched sound is called noise. Pitch is measured in units called Hertz (Hz) which is equivalent to "cycles per second." For practical purposes, pitch and frequency are interchangeable terms. (2) The number of grooves per inch on the surface of a phonograph record. (3) The subjective impression of the frequency, or musical tone of a sound, expressed in the latter case by its name-number, e.g., A2. Also the frequency of that musical note, e.g., for this example, 440Hz. (4) The distance between two perforations or sprocket holes along a strip of film. Camera-original film is generally short-pitch, and print film is generally long-pitch, the difference in these lengths being on the order of .0006" per frame. The two different pitches are necessary to prevent slippage between original and print film as they wind around various sprocket wheels in the contact printers used to make most prints.

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