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This book gives a solution for hands-free mobile phone users, some
of the annoying disturbance faced by the user during his
teleconference or in a hands-free mode is been addressed and an
optimized solution is been presented. The spectral subtraction
using a minimum statistics approach has been introduced that
eliminates the conventional voice active detector. This technique
is capable of tracking non-stationary noise signals and also proved
to be efficient in terms of performance and computationally
complexity. The book also shows the importance of using first order
adaptive differential microphone arrays. This helps in reducing the
reverberation effect caused during hands-free mode. The two unique
techniques have been successfully integrated and developed it into
a new robust algorithm that gives an optimal solution to the
hands-free applications.
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