Compressive sensing framework for speech signal synthesis using a hybrid dictionary

In communication medium to satisfy the speech enhancement process by using differents methodologies and algoirthms are the key term in testing the system design well enough to produce the best performance results for the speech system. The Wiener filter is one of the classical algorithm that applied to speech process to avoid the noise attacking the speech signal. In other word, compressive sensing method by randomize measurement matrix are combined with the Wiener filter to analyse the noisy speech signal with less introduce to noise signal and producing high signal to noise ratio. The PESQ is used to measure the quality of the proposed algorithm design. As in the experimental results shows that, attacking of defferent noise environments in speech signal still effectively improve the performance of noisy speech with maintain the high score of the PESQ quality.

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Watermarking Based on Compressive Sensing for Digital Speech Detection and Recovery †

Sensors ◽

10.3390/s18072390 ◽

2018 ◽

Vol 18 (7) ◽

pp. 2390 ◽

Cited By ~ 6

Author(s):

Wenhuan Lu ◽

Zonglei Chen ◽

Ling Li ◽

Xiaochun Cao ◽

Jianguo Wei ◽

...

Keyword(s):

Deep Learning ◽

Compressive Sensing ◽

Speech Signal ◽

Coincidence Problem ◽

Speech Detection ◽

Dct Domain ◽

Enhancement Method ◽

Dct Coefficients ◽

Content Recovery

In this paper, a novel imperceptible, fragile and blind watermark scheme is proposed for speech tampering detection and self-recovery. The embedded watermark data for content recovery is calculated from the original discrete cosine transform (DCT) coefficients of host speech. The watermark information is shared in a frames-group instead of stored in one frame. The scheme trades off between the data waste problem and the tampering coincidence problem. When a part of a watermarked speech signal is tampered with, one can accurately localize the tampered area, the watermark data in the area without any modification still can be extracted. Then, a compressive sensing technique is employed to retrieve the coefficients by exploiting the sparseness in the DCT domain. The smaller the tampered the area, the better quality of the recovered signal is. Experimental results show that the watermarked signal is imperceptible, and the recovered signal is intelligible for high tampering rates of up to 47.6%. A deep learning-based enhancement method is also proposed and implemented to increase the SNR of recovered speech signal.

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