The project aims to address the critical issue of enhancing the quality of speech signals corrupted by various types of noise, such as background noise, interference, or distortions, to improve the overall intelligibility and usability of the audio data.
In the era of the gradual development of artificial intelligence, people use sound to control the machine to complete the work. When the machine recognizes the human voice signal, the voice must be a signal with less noise interference, so the voice signal denoising technology is particularly important. Common speech signals are non-stationary random signals, mixed with various noises, and it is difficult to filter out common denoising methods. Aiming at this kind of non-stationary random signal denoising processing, this paper uses the characteristics of wavelet transform multi-resolution analysis to improve the wavelet threshold denoising algorithm and uses the improved wavelet threshold function to remove noise and get the original speech signal. The simulation results show that the improved wavelet threshold denoising algorithm has better performance. When analyzing non-stationary random signals, the denoising effect under different signal-to-noise ratios is very significant.
Keywords: Speech Signals, Denoising Algorithm, Simulation and Wavelet Threshold.NOTE: Without the concern of our team, please don't submit to the college. This Abstract varies based on student requirements.

Software: Matlab 2020a or above
Hardware:
Operating Systems:
Processors:
Minimum: Any Intel or AMD x86-64 processor
Recommended: Any Intel or AMD x86-64 processor with four logical cores and AVX2 instruction set support
Disk:
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Recommended: An SSD is recommended A full installation of all MathWorks products may take up to 29 GB of disk space
RAM:
Minimum: 4 GB
Recommended: 8 GB
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