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Les langues disponibles
RadioEar DD45 Headphones
RadioEar DD450 Headphones
RadioEar B81 Bone Conductor
Sound Field
Note: The maximum HL values are applicable to the middle frequencies only
Microphone
INT/EXT A & INT/EXT B
Level Range
Narrow Band Noise
(effective masking)
D-0131088 Rev C, 2022-07
GSI AudioStar Pro Instructions for Use
Frequency Range: 125 Hz – 8000 Hz
Level: -10 dB HL to 120 dB HL
Frequency Range: 125 Hz – 20,000 Hz
Level: -20 dB HL to 100 dB HL
Frequency Range: 250 Hz – 8000 Hz
Level: -10 dB HL to 90 dB HL (mastoid)
Level: -10 dB HL to 80 dB HL (forehead)
Frequency Range: 125 Hz – 8000 Hz
Level: -10 dB HL to 90 dB HL (basic speakers)
Level: -10 dB HL to 96 dB HL (high performance
speakers)
Level: -10 dB HL to 102 dB HL (high performance
speakers and external booster amplifier)
Speech
For live voice testing and communications
Can be utilized for internal speech files or
recorded speech material from an external
digital device
Air Conduction: -10 dB HL to 100 dB HL (DD45
Linear), Inserts (IP30): -10 dB HL to 95 dB HL
Bone Conduction (B81): -10 dB HL to 60 dB HL
(mastoid), -10 dB HL to 50 dB HL (forehead)
Sound Field: -10 dB HL to 90 dB HL (basic
speakers)
Masking
Maximum dB HL is 15 dB below tone
Frequency Range: 3 dB down bandwidth, 1/3
octave minimum; ½ octave maximum of test
signal
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