Số hiệu tiêu chuẩn
EN ISO 389-4
Tên tiêu chuẩn
Acoustics - Reference zero for the calibration of audiometric equipment - Part 4: Reference levels for narrow-band masking noise (ISO 389-4:1994)
Ngày phát hành
1998-12-00
Tiêu chuẩn tương đương
DIN EN ISO 389-4 (1999-07), IDT * BS EN ISO 389-4 (1995-03-15), IDT * NF S30-007-4 (1999-08-01), IDT * ISO 389-4 (1994-10), IDT * SN EN ISO 389-4 (1999), IDT * OENORM EN ISO 389-4 (1999-05-01), IDT * PN-EN ISO 389-4 (2002-03-29), IDT * SS-EN ISO 389-4 (1999-02-19), IDT * UNE-EN ISO 389-4 (1999-11-18), IDT * UNI EN ISO 389-4:1999 (1999-05-31), IDT * STN EN ISO 389-4 (2001-02-01), IDT * DS/EN ISO 389-4 (1999-06-07), IDT * NEN-EN-ISO 389-4:1999 en (1999-01-01), IDT * SFS-EN ISO 389-4:en (2000-12-24), IDT
Từ khóa
Acoustic couplers * Acoustic equipment * Acoustic testing * Acoustics * Air conduction hearing aids * Air tubes * Artificial ears * Audiometers * Audiometry * Auditory threshold * Bandwidths * Calibration * Couplers * Datum * Definitions * Ear simulators * Earphones * Electrical engineering * Frequencies * Headphones * Impact sound * Instruments * Masking noise * Measurement * Narrow band * Noise * Noise bandwidths * Noise (environmental) * Noise levels * Noise measurements * Pure-tone audiometers * Reference levels * Sound * Sound intensity * Sound pressure level * Sound levels