About Active Noise Cancellation - Nokia BH-905I User Manual

I n t r o d u c t i o n
Profile (HFP) 1.5, Advanced Audio Distribution Profile (A2DP) 1.2, and
Audio Video Remote Control Profile 1.0. Check with the manufacturers
of other devices to determine their compatibility with this device.

■ About active noise cancellation

TM
Wolfson AudioPlus Ambient Noise Cancellation technology uses
patented signal processing technology and advanced acoustic design
expertise to deliver class-leading active noise cancellation for stereo
headsets and headphones.
This novel feed-forward technology cancels more decibels of noise
across a wider frequency range than traditional feedback technologies,
providing a peaceful and tranquil environment for users wherever they
happen to be. As Wolfson's advanced technology does not process the
playback audio stream, your music comes through in untouched hi-fi
quality stereo.
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