Equivalent Sound Level definition

Equivalent Sound Level means the level, in decibels, of the mean-square A-weighted sound pressure during a stated time period, with reference to the square of the standard reference sound pressure of 20 micropascals. It is the level of the sound exposure divided by the time period and is abbreviated as Leq.
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Equivalent Sound Level. , sometimes denoted as Leq, means the value of the constant Sound level which would result in exposure to the same total A-weighted energy as would the specified time-varying Sound, if the constant Sound level persisted over an equal time interval and is measured in dB(A);
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Equivalent Sound Level. (also "average sound level") means the level of a constant sound which, in a given situation and time period, would convey the same sound energy as does the actual time-varying sound during the same period. Equivalent sound level is the level of the time weighted, mean-square, A-weighted sound pressure. A numerical subscript may be used to indicate the time period under consideration; i.e., Lea(24) or Lm(8) for 24-hour and 8-hour periods, respectively. No subscript indicates a 24-hour period. The mathematical expression for the Leq is as follows:
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Examples of Equivalent Sound Level in a sentence

  • Source: US Department of Housing and Urban Development, Aircraft Noise Impact Planning Guidelines for Local Agencies, November 1972., California Department of Transportation Metrics• Equivalent Sound Level, LeqLeq is the A-weighted level of a constant sound having the same energy content as the actual time-varying level during a specified interval.

  • In addition, Equivalent Sound Level (Leq) is often used to describe the overall noise environment.

  • The One Hour Equivalent Sound Level (Leq) and/or the Logarithmic Mean Impulse Sound Level (LLM) produced by the stationary sources shall be obtained by measurement or prediction.

  • The One Hour Equivalent Sound Level (Leq) and/or the Logarithmic Mean Impulse Sound Level (LLM) produced by the stationary sources shall be obtained by measurement performed in accordance with Section 7.

  • The following information should be provided as required: • One Hour Equivalent Sound Level (Leq) of the source.

  • Sound from existing adjacent stationary sources may be included in the determination of the background One Hour Equivalent Sound Level (Leq) if such stationary sources of sound are not under consideration for noise abatement by the Municipality or the Ministry of Environment and Energy.

  • The lowest hourly L90 value should be selected to represent the background sound level;• For all Areas, the existing One Hour Equivalent Sound Level (Leq) of the background sound level obtained either by prediction or through monitoring over a minimum period of 48 hours.

  • Equivalent Sound Level (or Leq): The sound level measured in decibels with an integrating sound level meter and averaged on an energy basis over a specific duration.

  • PROCEDURES All sound level measurements of the One Hour Equivalent Sound Level (Leq) and the Logarithmic Mean Impulse Sound Level (LLM) shall be made in accordance with Reference [3].

  • EXCLUSION No restrictions apply to a stationary source resulting in a One Hour Equivalent Sound Level (Leq) or a Logarithmic Mean Impulse Sound Level (LLM) lower than the minimum values for that time period specified in Table 205-1.


More Definitions of Equivalent Sound Level

Equivalent Sound Level. , sometimes denoted as Leq, means the value of the constant sound level which would result in exposure to the same total A-weighted energy as would the specified time-varying sound, if the
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Related to Equivalent Sound Level

  • DBRS Equivalent Rating means, with respect to any date and any Person with respect to whom DBRS does not maintain a public Relevant DBRS Rating as of such date,

  • Aggregate Industry Equivalent Unit Score is then calculated for each S&P Industry Classification, shown on Schedule 2, and is equal to the sum of the Equivalent Unit Scores for each issuer in such industry classification group.

  • Dose equivalent (HT means the product of the absorbed dose in tissue, quality factor, and all other necessary modifying factors at the location of interest. The units of dose equivalent are the sievert (Sv) and rem.

  • Equivalent Load means the sum of a Market Participant’s net system requirements to serve its customer load in the PJM Region, if any, plus its net bilateral transactions.

  • Morphine equivalent dose means a conversion of various opioids to a morphine equivalent dose by the use of accepted conversion tables.

  • RBC level means an insurer's company action level RBC, regulatory action level RBC, authorized control level RBC, or mandatory control level RBC where:

  • Ground Level means the level of the referred point of exposed surface of the ground as indicated in the drawing.

  • Sound level means the A-weighted Sound Pressure Level;

  • Sound level meter means an instrument which includes a microphone, amplifier, RMS detector, integrator or time averager, output meter, and weighting networks used to measure sound pressure levels.

  • Working level month (WLM) means an exposure to 1 working level for 170 hours (2,000 working hours per year divided by 12 months per year is approximately equal to 170 hours per month).

  • Working level (WL) means any combination of short-lived radon daughters in 1 liter of air that will result in the ultimate emission of 1.3E+5 MeV of potential alpha particle energy. The short-lived radon daughters are—for radon-222: polonium-218, lead-214, bismuth-214, and polonium-214; and for radon-220: polonium-216, lead-212, bismuth-212, and polonium-212.

  • Performance Measurement Period has the meaning set forth in Section 3.1(e)(ii).

  • Performance Percentage means the factor determined pursuant to a Performance Schedule that is to be applied to a Target Award and that reflects actual performance compared to the Performance Target.

  • Index Level means, in respect of any day and subject to Adjustment Provisions: (a) in respect of an Index(other than a Multiple Exchange Index), the closing level of such Indexat the Valuation Time on such day; and (b) in respect of an Index that is a Multiple Exchange Index, the official closing level of the Index on such day at the Valuation Time as calculated and published by the Index Sponsor each as rounded up to four decimal places (with 0.00005 being rounded up), allas determined by the Calculation Agent.

  • Effective dose equivalent (HE means the sum of the products of the dose equivalent to each organ or tissue (HT) and the weighting factor (wT) applicable to each of the body organs or tissues that are irradiated (HE = Σ wTHT).

  • Building level or district level leader means an individual employed by the District whose job assignment is that of a building level or district level administrator or an equivalent role, including an administrator licensed by the State Board of Education, an unlicensed administrator, or an individual on an Administrator Licensure Completion Plan. Building level or district level leader does not include the superintendent, deputy superintendents, associate superintendents, and assistant superintendents.

  • Mean Sea Level means the average height of the sea for all stages of the tide. It is used as a reference for establishing various elevations within the floodplain. For the purposes of this Ordinance, the term is synonymous with the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, to which Base Flood Elevations shown on a community's Flood Insurance Rate Map are referenced.

  • Licensed Level means a) when referenced in the context of a Named User, the quantity of Metric for which each individual Named User category and type is licensed -and- b) when referenced in the context of a Package, the quantity of Metric for which each individual Package is licensed; and

  • Pricing Level II shall exist on an Adjustment Date if the Consolidated Leverage Ratio for the relevant period is less than 3.50 to 1.00 but greater than or equal to 3.00 to 1.00.

  • Performance Measure means one or more of the following selected by the Committee to measure Company, Affiliate, and/or business unit performance for a Performance Period, whether in absolute or relative terms (including, without limitation, terms relative to a peer group or index): basic, diluted, or adjusted earnings per share; sales or revenue; earnings before interest, taxes, and other adjustments (in total or on a per share basis); basic or adjusted net income; returns on equity, assets, capital, revenue or similar measure; economic value added; working capital; total shareholder return; and product development, product market share, research, licensing, litigation, human resources, information services, mergers, acquisitions, sales of assets of Affiliates or business units. Each such measure shall be, to the extent applicable, determined in accordance with generally accepted accounting principles as consistently applied by the Company (or such other standard applied by the Committee) and, if so determined by the Committee, and in the case of a Performance Compensation Award, to the extent permitted under Code Section 162(m), adjusted to omit the effects of extraordinary items, gain or loss on the disposal of a business segment, unusual or infrequently occurring events and transactions and cumulative effects of changes in accounting principles. Performance Measures may vary from Performance Period to Performance Period and from Participant to Participant, and may be established on a stand-alone basis, in tandem or in the alternative.

  • Broadband level means all positions sufficiently similar in knowledge, skills, and abilities, and sufficiently similar as to kind or subject matter of work, level of difficulty or responsibilities, and qualification requirements of the work, to warrant the same treatment as to title, pay band, and other personnel transactions.

  • Call Equivalent Position shall have the meaning set forth in Rule 16a-1(b) under the Exchange Act.

  • Performance Level means a reference to one of Performance Level I, Performance Level II, Performance Level III, Performance Level IV or Performance Level V.

  • Equivalent position means employment in an equivalent position, in relation to the employee’s previous position, that is:  generally similar in role, duties and status; and  requires similar qualifications, training, skills and experience but may have a different title/or unit allocation; and • is in the same general locality; and • is on terms and conditions of employment that are no less favourable than those that applied to the employee immediately before the offer of employment.

  • Pricing Level refers to the determination of which of Level I, Level II, Level III, Level IV, Level V or Level VI applies at any date.

  • Dose equivalent (HT) means the product of the absorbed dose in tissue, quality factor, and all other necessary modifying factors at the location of interest. The units of dose equivalent are the sievert (Sv) and rem.