This headset is no longer available.

• Benefits of our passive noise cancelling technology
• No processor required, so low power requirements.
• Active noise cancelling technology relies on creating an anti-noise signal to cancel out the noise in a signal. Since there is inherent overlap in frequencies between speech and noise, this results in speech signals often being idetified as noise and vice versa. An observable consequence of this is distorted or garbled speech, and unsatisfactory noise cancellation. Also requires a power supply (typically, additional battery).
• Other electronic noise cancelling techniques use algorithms to identify noise from a digital signal and to filter it out using digital filters. These techniques are also frequency dependant, which results in the same problems mentioned above.

Specifications:

Microphone:
- Sensitivity -35 dBVrms
- Impedance 2,200 Ohms
- Frequency 50-20,000 Hz
- S/N ratio >70 dB

Speaker:
- Type:      Binaural Bone Conduction
 DCR:       20-32 Ohms
 Impedance @ 1KHz:
       40 Ohms ~20%
 Transducer Freq Response:
       250 - 4000 Hz
 Transducer sensitivity @ 1KHz:
       435 mV/71 dB (dB ref 1.0 dyne)
 Nominal Input Power:
       50 mW (minimum 30 mW)
 Maximum Input Power:
       100 mW