Disciplines of Study [DoS]  >  Acoustics  ]

The rate of repetition of the cycles of a periodic quantity, such as a sound wave. Thus, frequency is the inverse of the period. More generally, frequency can be thought of as the rate of change of phase. Frequency is denoted by the symbol f, and is measured in hertz (Hz) - formerly called cycles per second (cps or c/s) - kilohertz (kHz), or megahertz (mHz). The only sound which consists of a single frequency is the pure sine tone. All other sounds are complex, consisting of a number of frequencies of greater or lesser intensity. The frequency content of a sound is its spectrum. The subjective sense of frequency is called pitch. That is, frequency is an acoustic variable, whereas pitch is a psychoacoustic one. (Source: Barry Truax - Handbook for Acoustic Ecology CD-ROM Edition. Cambridge Street Publishing, 1999 - CSR-CDR 9901)


See also:

Amplitude, Fundamental, Harmonic, Inharmonic, Noise, Oscillation, Partial, Spectrum, Temperament/Tuning Systems



English - Español - Français - Deutch - Italiano

Alphabetical order - Chronological order


80 mg lipitor viread generic azithromycin in mayami buy orlistat in mexico order methoxsalen online amlodipine besylate 2.5 mg letrozole for sale ciprofloxacin 500mg amiloride 5 mg information about buy generic mirtazapine prilosec otc amlodipine 2.5 mg esomeprazole generic discount more info about simvastatin tab canada nexium cheap ciprofloxacin in chinesse piracetam walgreens bupropion mexico nexium cheap canada bactrim 800 160 mg accutane from canada bactrim generic discount in new york buy xenical 120 mg online lipitor in portugal generic version of accutane fluconazole price azithromycin how much does it cost bupropion a102 in usa about nuvigil armodafinil primaforce piracetam ciprofloxacin no prescription overnight buy xenical without consultation levetiracetam 500 mg drug buy cheap nexium in france bupropion er 12 hr in usa more info zocor cheap canada enalapril maleate w 975 more info about bupropion 300 mg buy diflucan on line more info about mexico norvasc bupropion hcl 150mg xl buy azithromycin cheap in new york non-prescription tretinoin buy piracetam powder online premarin price bactrim for acne prednisolone impurities generic azithromycin without prescription no rx ciprofloxacin online omeprazole metronidazole price orlistat of ranbaxy india diflucan pfizer piracetam med orlistat non prescription information bupropion cost of purchase doxycycline online more buy filagra online enalapril maleate 2.5 mg info about piracetam positives a-ret for