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Bone conductor
Pure tone:
Insert phones
Pure tone:
Narrow band noise:
− Spectral properties:
White noise:
− Spectral properties:
Narrow band noise:
− Spectral properties:
White noise:
− Spectral properties:
Insert masking phone
Free Field output
(calibrated on location)
Pure tone:
Narrow band:
− Spectral properties:
White noise:
− Spectral properties:
Speech calibration standards and spectral properties:
Earphones
Bone conductor
Insert phones
Insert masking phone
Free field output
Speech signal 1:
Speech weighted
masking:
− Spectral properties:
Speech signal:
− Spectral properties:
Speech signal:
Speech weighted
masking:
− Spectral properties:
Speech weighted
masking:
− Spectral properties:
Speech signal:
Speech weighted
masking:
− Spectral properties:
ISO 389-3 / ANSI S3.6. Valid for placement on the human
mastoid
ISO 389-2
ISO 389-2+ ISO 389-4 values
EN 60645-1, Narrow band noise, electrically measured.
SPL
EN 60645-1, White noise, electrically measured.
ISO 389-2 + ISO 389-4 values
EN 60645-1, Narrow-band noise, electrically measured.
SPL
EN 60645-1, White noise, electrically measured.
ISO 389-7 Free field
ISO 389-7 Diffuse field
EN 60645-1, Narrow band noise
SPL
EN 60645-1, White noise.
EN 60645-2/ANSI S3.6, type B,B-E, or STAFF
EN 60645-2/ANSI S3.6, type B,B-E, or STAFF
EN 60645-2, type B or B-E masking sound
EN 60645-2
EN 60645-2, electrically measured.
EN 60645-2, type B
EN 60645-2, type B
EN 60645-2. Masking sound, uncorrected, electrically
measured.
EN 60645-2, type B
EN 60645-2.Masking sound, uncorrected, electrically
measured.
EN 60645-2, ANSI S3.6 or STAFF
EN 60645-2, ANSI S3.6 or STAFF
EN 60645-2 Masking sound
1 The speech calibration signal recommended by EN 60645-2, type B-E-calibration, can be track 32 from Westra CD no. 1.
By calibration of ANSI and EN 60645-2, type B a 1000Hz sine tone is used.
AA222 Service manual page 8