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首页> 外文期刊>Far East Journal of Electronics and Communications >Advanced orthogonal projection algorithm for acoustic feedback cancellation in hearing AIDS
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Advanced orthogonal projection algorithm for acoustic feedback cancellation in hearing AIDS

机译：先进的正交投影算法可消除助听器中的声音反馈

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摘要

This study is to cancel the acoustic feedback signals by using an improved orthogonal projection method in the digital hearing aids. Comparing with the NLMS (normalized least mean square) algorithm with the simplicity and the stability, it gives that the proposed method has the better convergence performances for high correlative signals, and has low computational complexities. We simulated with various input signals to verify the convergence characteristics of this algorithm. And we compared the simulation results by this algorithm with the ones by the NLMS algorithm. Therefore, these works prove that the proposed AOP (advanced orthogonal projection) algorithm shows about 3.1dB higher SNR than the NLMS algorithm for the colored signals in the feedback canceller.
机译：这项研究旨在通过在数字助听器中使用改进的正交投影方法来消除声学反馈信号。与NLMS（归一化最小均方）算法相比，该算法具有简单，稳定的特点，对高相关信号具有更好的收敛性能，并且计算复杂度较低。我们用各种输入信号进行了仿真，以验证该算法的收敛特性。然后，我们将该算法的仿真结果与NLMS算法的仿真结果进行了比较。因此，这些工作证明，对于反馈消除器中的彩色信号，所提出的AOP（高级正交投影）算法显示出比NLMS算法高约3.1dB的SNR。

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