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twelfth octave

twelfth octave, Total:15 items.

In the international standard classification, twelfth octave involves: Acoustics and acoustic measurements, Aircraft and space vehicles in general, Protection of and in buildings.

Japanese Industrial Standards Committee (JISC), twelfth octave

• JIS C 1513:1983 Octave and third-octave band analyzers for sounds and vibrations

CZ-CSN, twelfth octave

• CSN 35 6871-1982 Electronic octave nad onethird octave filters
• CSN 99 5461-1988 Electronic octave and onethird octave filters Methods of verification

ESDU - Engineering Sciences Data Unit, twelfth octave

• TM 182-2017 Technical Memorandum Octave and One-Third Octave Filters
• ESDU 82027 B-2011 Estimation of lateral attenuation of air-to-ground jet or turbofan aircraft noise in one-third octave bands
• ESDU 82027 B-1993 Estimation of lateral attenuation of air-to-ground jet or turbofan aircraft noise in one-third octave bands

Society of Automotive Engineers (SAE), twelfth octave

• SAE AIR1906-1985 Estimation of One-Third- Octave-Band Lateral Attenuation of Sound from Jet-Propelled Airplanes
• SAE AIR1906-1991 ESTIMATION OF ONE-THIRD-OCTAVE-BAND LATERAL ATTENUATION OF SOUND FROM JET-PROPELLED AIRPLANES
• SAE ARP5534-2021 Application of Pure-Tone Atmospheric Absorption Losses to One-Third Octave-Band Data
• SAE AIR1906A-2012 Estimation of One-Third Octave Band Lateral Attenuation of Sound from Jet-Propelled Airplanes

International Organization for Standardization (ISO), twelfth octave

• ISO/DIS 13473-4 Characterization of pavement texture by use of surface profiles — Part 4: One third octave band spectral analysis of surface profiles

American Society for Testing and Materials (ASTM), twelfth octave

• ASTM E1573-18 Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels
• ASTM E1573-22 Standard Test Method for Measurement and Reporting of Masking Sound Levels Using A-Weighted and One-Third-Octave-Band Sound Pressure Levels
• ASTM E1573-02 Standard Test Method for Evaluating Masking Sound in Open Offices Using A-Weighted and One-Third Octave Band Sound Pressure Levels
• ASTM E1573-93(1998) Standard Test Method for Evaluating Masking Sound in Open Offices Using A-Weighted and One-Third Octave Band Sound Pressure Levels

Others:   one-third octave, Sound pressure one-third octave, Vibration one-third octave, one-third octave band, One-third octave filter, One Third Octave Analysis, Ten bands of one-third octave, Sound Pressure Level and One-third Octave Bands, Total SPL and one-third octave bands, Why take one-twelfth of c12, Why Use One Third Octave, One-third octave and two-thirds, Loudspeaker one-third octave, twelfth octave, one-third octave one-sixth, one-twelfth rule.