Поиск

Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent thresh…

Overview EN ISO 389-8:2004 (ISO 389-8:2004) defines reference equivalent threshold sound pressure levels (RETSPLs) for pure tones delivered by a specified model of circumaural earphone (SENNHEISER HD…

Acoustics - Reference zero for the calibration of audiometric equipment - Part 8: Reference equivalent thresh…

Overview EN ISO 389-8:2004 (ISO 389-8:2004) defines reference equivalent threshold sound pressure levels (RETSPLs) for pure tones delivered by a specified model of circumaural earphone (SENNHEISER HD…

Bases for design of structures — Notations — General symbols

Bases for design of structures — Notations — General symbols

Acoustics — Reference zero for the calibration of audiometric equipment — Part 8: Reference equivalent thresh…

Overview - ISO 389-8:2004 (Acoustics, RETSPL for circumaural earphones) ISO 389-8:2004 specifies reference equivalent threshold sound pressure levels (RETSPLs) for pure tones from 125 Hz to 8 kHz for…

Bases for design of structures — Names and symbols of physical quantities and generic quantities

Overview ISO 3898:2013 - Bases for design of structures - defines standardized names, symbols and units for physical and generic quantities used in the design of structures. It provides a compact set…

Bases for design of structures — Notations — General symbols

Acoustics. Reference zero for the calibration of audiometric equipment. Reference equivalent threshold sound…