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Efficient underdetermined speech signal separation using encompassed Hammersley- Clifford algorithm and hardware implementation
Microprocessors and Microsystems ( IF 1.9 ) Pub Date : 2021-06-30 , DOI: 10.1016/j.micpro.2021.104300
Velammal. M Navaneetha , P Nirmal Kumar

Speech Separation is among the propelled advances for a wide range of uses in different sectors, where detachment from the Blind Source Separation Signal is a troublesome task. Blind source separation is a growing digital signal processing industry to separate the precise signal from the recorded dense. Exclusively, among the "Blind Source Separation," the "Under Determined Blind Source Separation" is considered as an Over Determined Blind Source Separation due to its wide range of usage. Nevertheless, it is seen that real implementation is very rarely done in existing researches because the real-time Implementation of UBSS (Underdetermined Blind Source Separation) exists to be a challenging one due to its lacking hardware characteristics of increased latency, reduced speed and consumption of more memory space. Consequently, an increasing need to implement an Underdetermined source signal separation in real-time with improved hardware utility. In this Unswerving framework, a Real-time feasible Source Signal separator formulated in which the source signals decomposed by Boosted Band-Limited VMD (Variational Mode Decomposition) "Multicomponent Signal”. The amount of "Band-Limited” Intrinsic Mode Function (BLIMF) was subjected to the Encompassed Hammersley–Clifford algorithm for source separation using Expectation-Maximization and Gibbs Sampling, an alternative to deterministic algorithms and to determine the exact estimated parameter from the E-M method. Subsequently, the source separation algorithm infers the best separation of source signals by exact estimation and determination from the decomposed signals. The iterations in E-M estimation reduced by the Gauss-Seidel Method. Thus, our novel source signal separates internally with a signal decomposer and a source separation algorithm with fewer iterations, which reduces memory consumption and yields better hardware realization with reduced latency and increased speed. The proposed implementation is done by utilizing Matlab for initial processing and the hardware analysis performed in Xilinx Platform.



中文翻译:

使用包含的 Hammersley-Clifford 算法和硬件实现进行有效的欠定语音信号分离

语音分离是在不同领域广泛使用的推动进展之一,在这些领域,从盲源分离信号中分离是一项麻烦的任务。盲源分离是一个不断发展的数字信号处理行业,用于从记录的密集信号中分离出精确的信号。唯一的,在“盲源分离”中,“欠确定盲源分离”由于使用范围广,被认为是过度确定盲源分离。然而,可以看出,现有研究中很少有真正的实现,因为 UBSS(Underdetermined Blind Source Separation)的实时实现存在一个具有挑战性的问题,因为它缺乏增加延迟、降低速度和消耗的硬件特性。更多的内存空间。最后,越来越需要通过改进的硬件实用性实时实现欠定源信号分离。在这个 Unswerving 框架中,制定了一个实时可行的源信号分离器,其中由 Boosted Band-Limited VMD(变分模式分解)“多分量信号”分解的源信号。“带限”本征模式函数(BLIMF)的数量使用期望最大化和吉布斯采样进行源分离的包含 Hammersley-Clifford 算法,这是确定性算法的替代方法,并从 EM 方法确定精确的估计参数。随后,源分离算法通过从分解信号中精确估计和确定来推断源信号的最佳分离。Gauss-Seidel 方法减少了 EM 估计中的迭代次数。因此,我们新颖的源信号使用信号分解器和源分离算法进行内部分离,迭代次数更少,这减少了内存消耗,并在减少延迟和提高速度的情况下产生更好的硬件实现。建议的实现是通过利用 Matlab 进行初始处理和在 Xilinx 平台中执行的硬件分析来完成的。

更新日期:2021-07-15
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