Fundamental Tone

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fundamental tone

[¦fən·də¦ment·əl ′tōn]
The component tone of lowest pitch in a complex tone.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Fundamental Tone


(or fundamental), the tone produced by an acoustic system when the system is vibrating at its lowest possible frequency. The pitch of the fundamental tone is determined by the natural vibration frequency of the system; hence, the pitch depends on the nature of the system itself. The term “fundamental tone” is used to designate the tone having the lowest frequency when a complex periodic vibration is expanded in a series of harmonics.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The structuring of the twelve interlinked all-interval rows has as yet not been considered: By analogy to the overtone relationships to a fundamental tone, Stockhausen subsequently expressed the eleven intervals of the series as proportions.
(22.) Stockhausen relates the expressions "fundamental duration" and "fundamental pitch" to the traditional concepts of meter and rhythm in this way: "The difference between metre and rhythm is exactly that which we discern between the 'fundamental tone' and the 'tone-colour' of sound-spectra: the fundamental phase (metric fundamental) is defined by the periodic main intensity-maxima (the heaviest accents), and these result from the formant-structure.
Usually the determined frequency is DC +[f.sub.inst] or the fundamental tone, -[f.sub.inst], and design knowledge of the circuit leads easily to the proper value.
While the levels are often set at 6 dB below the 1 dB compression point, the preferred in-house method is to reduce the level of the two fundamental tones by 10 dB to preclude any possibility of gain saturation during the brief periods when the tones are in phase and the peak envelope power (PEP) is 6 dB above the level of either tone.
In actual practice, to measure 31M, the two fundamental tones are set at a level of 10 dB below the 1 dB compression point of the amplifier.
The simulator allows designers to specify any number of fundamental tones for analysis and to co-simulate EM, linear and non-linear circuits.
simulator allows the designer to specify any number of fundamental tones for analysis and to co-simulate EM, linear and nonlinear circuits.
For example, there is no limit to the number of fundamental tones used in the analysis.
The cancellation of the fundamental tones and the distortion products as a function of the phase error is limited by the expression [3]
These distortion spectra are a result of the interaction of all three fundamental tones, that is, [kf.sub.1] [+ or -] [mf.sub.2] [+ or -] [nf.sub.3].

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