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How to activate noise cancellation in boat rockerz 255f? 

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The proposed method came out to be very effective in noise cancellation of signal without requiring reference noise source.
The outcomes from extensive experimentations show that the proposed PSO based acoustic noise cancellation method provides high performance in terms of SNR improvements with a satisfactory convergence rate in comparison to that obtained by some of the state-of-the-art methods.
With a dominant noise source present and with the pilot wearing an oxygen facemask, we demonstrate that good (>10 dB) cancellation of the additive noise and little speech distortion can be achieved by having the reference microphone attached to the outside of the facemask and by updating the filter coefficients only during silence intervals.
We demonstrate that the cancellation of this noise can be accomplished by the receiver, and SNR gains can be demonstrated using commercial RFICs.
This paper describes an adaptive noise cancellation technique suitable for diver voice communications in which the noise may be multisource.
Simulation results show that the common-mode noise cancellation technique could provide 20- to 30 dB improvement in those radio frequency bands.
We demonstrate a crosstalk resistant adaptive noise cancellation method.
Proceedings ArticleDOI
Hsiang-Feng Chi, Shawn X. Gao, S.D. Soli 
30 May 1999
16 Citations
Utilizing the characteristics of the feedback oscillation, the algorithm provides better cancellation efficiency, convergence behavior and, hence, better output sound quality than the widely-used wideband feedback cancellation schemes.
The volumetric noise cancellation offered by the proposed methodology along with leaving the wanted sound unchanged is a unique feature compared to other techniques available in the literature.
It is shown that the performance of the new procedure for noise cancellation for multi-sensory signals is improved when compared to previously proposed methods.
The analysis and results on proposed technique for noise cancellation shows promising performance.
Thus, they demonstrate that the FNTF is an efficient scheme for acoustic echo cancellation in mobile radio.
Application of the new algorithm to multichannel acoustic echo cancellation with real-world signals achieves improved performance.
Simulation results show promising improvement in noise cancellation even under very low and varied SNR and noise source conditions.
Further, we propose an acoustic-specific cancellation scheme to deal with the strong multipath self-interference in IBFD UWA systems.

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