Signal processing circuits are electronic systems designed to manipulate and analyze signals, which can be electrical, optical, or acoustic. These circuits perform various functions, such as filtering, amplifying, and converting signals to improve their quality or extract useful information. Common applications include audio processing, telecommunications, and image processing. These circuits often utilize components like resistors, capacitors, and transistors to achieve their goals. By employing techniques such as analog or digital signal processing, they can enhance signal clarity, reduce noise, and enable efficient data transmission. Signal processing circuits are essential in modern technology, impacting devices like smartphones and medical imaging equipment.