Denoising is a research area in signal processing that focuses on removing unwanted noise or distortions from a signal. This can include reducing noise in audio recordings, improving the clarity of images, or enhancing the quality of sensor data. Denoising techniques typically involve a combination of filtering, statistical analysis, and optimization methods to separate the signal of interest from the unwanted noise. The goal of denoising is to improve the signal-to-noise ratio and produce a cleaner, more accurate representation of the original signal.