Octave band definition

Octave band means a spectrum of sound frequencies between band edge frequencies an octave apart. For purposes of this procedure, octave band frequencies are as specified in Table 1 of ANSI S1.11-1966 (R-1976) “specifications for octave, half-octave and third-octave band filter sets” (see N.J.A.C. 7:29-2.12(a)1).
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Octave band means a prescribed interval of sound frequencies which classifies sound according to its pitch.
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Octave band means an interval in Hertz between two frequencies having a ratio of 2:1. For purposes of this Regulation, octave band sound pressure levels shall be measured at any of the following center frequencies: 31.5, 63, 125, 250, 500, 1,000, 2,000, 4,000 and 8,000 Hz.
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Examples of Octave band in a sentence

  • Octave band corrections may be employed in meeting the response specification.

  • Octave band levels with an IEC input spectrum (dB) For the Football stadium, a scenario with 80% of the stands occupied with people was considered for the STI predictions.

  • The CEL-63x instrument provides SPL, Integrating and Octave band noise measurements compliant with the following international standards: IEC 61672-1: 2002-5 (Electro-Acoustics – Sound Level Meters) Group„X‟ instruments.

  • Octave band LEq and percentiles ambient noise levels were also measured for each area.

  • Octave band Hz 125 Both spectra included in Table 2 will be used in the next section for STI calculations.

  • The primary requirements for obtaining the outdoor equipment’s sound levels are:♦ Accurate calibrated sound measurement equipment should be used.♦ Octave band sound pressure levels are mandatory.♦ he sound level data should indicate the true directivity effects of the unit’s sound (there should be no nearby buildings or obstructions to distort the true radiation pattern of the unit test).♦ The measurement distance should be specified.

  • This document defines the data policy and data management procedures in Horizon-2020 INFRADEV-2 project #871115 Aerosols, Clouds and Trace gases Research Infrastructure – Implementation Project (ACTRIS IMP).

  • Octave band background sound level measurements for residential areas near the proposed Indeck plant site show background noise levels in the lowest regulated frequencies (31.5-125 [Hertz]) as low as 35-40 dB during both daytime and nighttime hours.

  • The CEL-63x instrument provides SPL, Integrating and Octave band noise measurements compliant with the following international standards: • IEC 61672-1:2013 (Electro-Acoustics – Sound Level Meters) Group ‘X’ instruments.

  • The SPL of the prediction fluctuates up and down around the corresponding value of the test, and it also shows a good agreement of experimentation18 Mathematical Problems in Engineering 70 Sound pressure level (dB(A))60 50 40 30 10 100 10001/3 Octave band (Hz)Test PredictionFigure 19: Comparison between sound pressure levels of prediction and test.


More Definitions of Octave band

Octave band is a means of dividing the range of sound frequencies into octaves in order to classify sound according to pitch.
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Octave band means a frequency band with lower and upper cut-o" frequencies having a ratio of 2. The cut-o" frequencies of 707 Hertz and 1414 Hertz define an octave band in common use.
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Octave band means a filter that attenuates all noise except that which lies between two close frequencies. Octave band filters are used to measure which frequencies are mainly present in a given noise.
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