关键词: VSLMS, 子空间, 组合降噪算法, SOPC技术, 硬件实现

Abstract:

This paper proposes and hardware implements a combined filtering algorithm based on the principles of VSLMS and the subspace filtering algorithm. The subspace algorithm tries to find a voice signal decomposition point and separates the signal from the noise, so that the signal can be used as the input of VSLMS. The signal is then enhanced by VSLMS. The SOPC technology is employed to build the embedded voice noise reduction system on the basis of software algorithm. The experiment results show that the method is superior in convergence speed to the traditional noise reduction algorithm by its use of the hardware architecture.

Key words: VSLMS, subspace, combined filtering algorithm, SOPC, hardware implement