Accessory Lineup Brochure 2013

Technology
to block
noise
Technology
to reduce
noise
Special technology for HA-NC250
Equipped with advanced
noise cancellation technology
Sound-insulating ear pads
●
●
●
Soft memory foam cushions
with extremely smooth surface
ear pads that fit exactly on
your ears create a seal to
block background noise.
Dual housing structure
Dual acoustic wall blocks
incoming background noise.
Even after reducing background
noise, some will remain.
A microphone close to the driver
unit picks up such remaining
noise and the feedback circuit
produces the appropriate
amount of additional anti-phase
sound. Every nuance of audio
becomes clear through this
feedback technology.
63
● Advanced noise cancelling with “feedback technology” ● Standard noise cancelling
Microphone
Reduced noise
Microphone
Reduced noise
Detected
noise
Noise wave
Anti-phase wave
Noise wave
Anti-phase wave
Anti-phase sound is
added to reduce
noise; however
the microphone
picks up
neighbouring noise.
An additional amount of
anti-phase sound is added to
reduce noise; the microphone
monitors noise continuously.
Remaining noise is
almost eliminated.
Add anti-phase
sound to
reduce noise
Detected
noise