Bulgarian Institute for Standardization
Standards – always a step ahead
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Projects and standards

To find easily the necessary information, use the different options for advanced search below, e.g. search by technical committee; by keyword in Bulgarian/English; by reference and others.

Acoustics — Reference zero for the calibration of audiometric equipment — Part 3: Reference equivalent threshold vibratory force levels for pure tones and bone vibrators

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 4: Reference levels for narrow-band masking noise

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz to 16 kHz

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 6: Reference threshold of hearing for test signals of short duration

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions

60.60 Standard published

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Reference zero for the calibration of audiometric equipment — Part 9: Preferred test conditions for the determination of reference hearing threshold levels

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Statistical distribution of hearing thresholds related to age and gender

90.60 Close of review

ISO/TC 43 more

Acoustics — Audiometric test methods — Part 1: Pure-tone air and bone conduction audiometry

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Audiometric test methods — Part 2: Sound field audiometry with pure-tone and narrow-band test signals

90.93 Standard confirmed

ISO/TC 43 more

Acoustics — Audiometric test methods — Part 3: Speech audiometry

60.60 Standard published

ISO/TC 43 more

Acoustics — Determination of occupational noise exposure — Engineering method

90.92 Standard to be revised

ISO/TC 43/SC 1 more

Ergonomic requirements for office work with visual display terminals (VDTs) — Part 620: The role of sound for users of interactive systems

30.99 CD approved for registration as DIS

ISO/TC 159/SC 4 more

Acoustics — Normal equal-loudness-level contours

40.60 Close of voting

ISO/TC 43 more

Ships and marine technology — Noise measurement method for HVAC system in accommodation spaces

40.00 DIS registered

ISO/TC 8/SC 8 more

Acoustics — Determination of occupational noise exposure — Methodology

40.00 DIS registered

ISO/TC 43/SC 1 more

Acoustics — Description, measurement and assessment of environmental noise — Part 3: Objective method for the measurement of prominence of impulsive sounds and for adjustment of L Aeq

60.60 Standard published

ISO/TC 43/SC 1 more

Acoustics — Recommended practice for the design of low-noise workplaces containing machinery — Part 3: Sound propagation and noise prediction in workrooms

90.93 Standard confirmed

ISO/TC 43/SC 1 more