Application of Frequency Domain Filter Banks in Audio Denoising

The purpose of this project is to design and implement a filter to remove random interfering signals added to the audio file. By adding noise to the original audio signal and designing low-pass and band-stop filters, the noise components of specific frequency bands are suppressed. The results show that the combination of low-pass and band-stop filtering can significantly reduce the influence of noise and improve the clarity of the signal. The possibility of improving the filtering parameters to optimize the denoising effect is further explored<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</sup>.