Posted on December 19, 2017December 20, 2017 by Pulse AssentISO 389-1:2017 Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones Link: ISO 389-1:2017 Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones Source: BSI Standards Related Posts:The government unveils new “Energy Bills Discount…Record levels of investment for UK's £10.1 billion…Government launches campaign to help businesses…New laws to introduce digital labelling for…The Autumn Statement 2022 speech
