Direct Digital Synthesis (DDS) is a method used to generate waveforms, such as sine, square, or triangular waves, directly from digital data. It utilizes a digital signal processor (DSP) to create precise frequencies by manipulating digital values stored in a lookup table. This technique allows for high-frequency stability and accuracy, making it ideal for applications in telecommunications and signal processing. DDS systems can quickly change frequencies without the need for analog components, which enhances their versatility. They are commonly found in devices like signal generators, synthesizers, and radar systems, where precise control over frequency and phase is essential for performance.