Sound level definition

Sound level means the A-weighted Sound Pressure Level;

Sound level means the weighted sound pressure level obtained by the use of a sound level meter and frequency weighting network, such as A, B, or C as specified in the American National Standards Institute specifications for sound level meters. (ANSI SI.4 - 1971, or the latest approved revision thereof.) If the frequency weighting employed is not indicated, the A-weighting shall apply.

Sound level means the noise level measured in decibels on the A-weighted scale of a sound level instrument that conforms to recognized industry standards and is maintained according to the manufacturer’s instructions.

Examples of Sound level in a sentence

• Sound level meters which are employed to measure the intensity of sound are calibrated in "decibels".

• Sound level predictions were calculated in accordance with ISO 9613-2, which is an international standard for calculating outdoor sound propagation.

• Sound level meters shall be Rion NL-20, CESVA SC-160, Extech 407780 or an approved equal capable of meeting IEC60651: 1979 Type 2 and IEC60804: 1985 Type 2 Standards.

• Sound level of the exhaust fans shall not exceed 60db for domestic application and 65db for industrial application.

• Sound level meters, which comply with the International Electrotechnical Commission Publication 651: 1979 (Type 1) and 804: 1985 (Type 1) specifications as referred to the Technical Memorandum (TM) issued under the Noise Control Ordinance, were used.

More Definitions of Sound level

Sound level means the weighted sound pressure level measured by the use of a metering characteristic and weighted as specified in American National Standards Institute Specifications, Section 1.4-1971. The sound pressure level of a sound expressed in decibels is twenty (20) times the logarithm to the base ten (10) of the ratio of the pressure of the sound to the reference sound pressure of twenty (20) micropascals. In the absence of any specific modifier, the level is understood to be that of a mean-square pressure.

Sound level means the quantity in decibles measured by a sound level meter satisfying the requirements of American National Standards Speci- fication for Sound Level Meters S1.4– 1971. This publication is available from the American National Standards In- stitute, Inc., 1430 Broadway, New York, New York 10018. Sound level is the fre- quency-weighted sound pressure level obtained with the standardized dy- namic characteristic ‘‘fast’’ or ‘‘slow’’ and weighting A, B, or C; unless indi- cated otherwise, the A-weighting is un- derstood.[39 FR 38215, Oct. 29, 1974]

Sound level means the weighted sound pressure level measured by the use of a metering characteristic and weighing A, B, or C as specified in American National Standard Specifica- tion for Sound Level Meters S1.4–1971 or subsequent approved revision. The weighting employed must be specified, otherwise A-weighting is understood.

Sound level means the level, in decibels, measured by instrumentation which satisfies the requirements of American National Standard Specifica- tion for Sound Level Meters S1.4–1971 Type 1 (or S1A) or Type 2 if adjusted as shown in Table 1. This publication is available from the American National Standards Institute, Inc., 1430 Broad- way, New York, New York 10018. For the purpose of these procedures the sound level is to be measured using the Aweighting of spectrum and either the FAST or SLOW dynamic averaging characteristics, as designated. It is ab- breviated as LA.

Sound level means the instantaneous Aweighted sound pressure level, in decibels, as measured with a sound level meter set to the “A” weighting scale, slow response.

Sound level means the reading on a sound level meter taken at a measuring point at the end of the measurement period;

Sound level means the sound pressure level measured in decibels with a sound level meter set for A-weighting; sound level is expressed in dBA.