Bose is set to launch new a new noise canceling headphone which the Company claims is better than previous models because it uses a variety of active and passive techniques to attenuate background noise across a wider range of frequencies.
Bose is set to launch new a new noise canceling headphone which the Company claims is better than previous models because it uses a variety of active and passive techniques to attenuate background noise across a wider range of frequencies.
The QC 15 which will go on sale in Australia shortly features an outside and inside microphone on each ear cup to improve low-frequency background-noise cancellation.
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The old and new models are almost identical in appearance as well. Both operate on a single AAA battery, however the new model only delivers 35 hours of use compared to 40 hours in the old model.
One of the techniques adopted by Bose to improve performance was to feed-forward technology, which adds a microphone on the outside of each ear cup to complement an inside microphone. The two microphones combine with improved noise-canceling electronics to actively attenuate low-frequency noise. Mechanical improvements to the QC15’s ear cushions improved the attenuation of higher frequency background noise.
In the QC15, Bose said it also reduced the differences in the level of performance that different users hear. Head-to-head performance variations are caused by the shape of a person’s head, the amount of hair on their head, and other factors that change the seal between the ear and the ear cup. The seal also changes when users move their head. The differences are reduced by using exterior microphones and an acoustical design that provides more constant loading for the headphone’s drivers, said engineer Roman Sapiejewski.
