these harmonics
21Chirp — For other uses, see Chirp (disambiguation). A chirp is a signal in which the frequency increases ( up chirp ) or decreases ( down chirp ) with time. In some sources, the term chirp is used interchangeably with sweep signal.[1] It is commonly used …
22Cycloconverter — For the rotating electrical machine, see Rotary converter Connection of the thyristors in a cycloconverter A cycloconverter or a cycloinverter converts an AC waveform, such as the mains supply, to another AC waveform of a lower frequency,… …
23Mridangam — Not to be confused with Mridanga. Mridangam Percussion instrument Developed First mentioned in Hindu literature: Lord Nandi first played this instrument for Lord Shiva …
24Constant Q transform — In mathematics and signal processing, the Constant Q Transform transforms a data series to the frequency domain, and is related to the Fourier Transform [1]. The transform can be thought of as a series of logarithmically spaced filters, with the… …
25Pipe organ tuning — This article describes the process and techniques involved in the tuning of a pipe organ. Electronic organs typically do not require tuning. A pipe organ produces sound via hundreds or thousands of organ pipes, each of which produces a single… …
26Undulator — An undulator is an insertion device from high energy physics and usually part of a larger installation, a synchrotron storage ring. It consists of a periodic structure of dipole magnets (see dipole magnet). The static magnetic field is… …
27Nonlinear junction detector — The non linear junction detector, or an NLJD, is a device that illuminates a small region of space with high frequency, RF energy. Any non linear junction in the vicinity for example, and particularly, the p n junction will receive this energy,… …
28harmonic series — noun 1. : the divergent series 1+ 1/2+ 1/3+ 1/4+ 1/5+ … 2. : a series of partial tones consisting of a fundamental tone or first harmonic and all the overtones whose frequency ratio to it can be expressed in whole numbers, these harmonics usually …
29Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… …
30sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …
