Specifications
RECEIVER
Transducer type:
balanced armature
Impedance:
32 Ohms @ 1 kHz
Maximum continuous input:
1 V
Sound pressure level 1 kHz:
97 ±3 dB @ 0.1 V
Frequency response:
22 Hz to 12 kHz
MICROPHONE
Microphone type:
directional electret
Operating voltage:
1.0 V to 10.0 V
Close talking sensitivity:
-46 ±3 dB dB re: 1 V/Pa @ 1 kHz
(measured @ 15 mm from source)
Noise Rejection:
10 dB
(compared to an omnidirectional microphone at the same location)
Noise Isolation
The
earphone
provides the highest noise isolation of any mobile
phone headset. Noise reduction is 37 dB, averaged over the
octave frequencies from 125 to 8000 Hz, allowing only the audio
from the caller to enter the ear. As an earplug, it has a calculated
noise reduction rating (NRR) of 24 dB. The
microphone
provides
4 to 11 dB greater noise rejection than other microphones at the
same location, and up to 25 dB more noise rejection than booms
that are not close to the mouth.
