Digital Signal Processors (DSPs) are not a single brand but a category of specialized microprocessors designed for high-speed numeric calculations, widely used in audio, video, and telecommunications industries. Key brands include Texas Instruments (USA), Analog Devices (USA), and NXP Semiconductors (Netherlands). These companies produce DSP chips for applications like noise cancellation, image processing, and wireless communication. Products range from standalone DSP chips to integrated solutions for industrial automation, consumer electronics, and automotive systems. For example, Texas Instruments' TMS320 series is a popular DSP line used in medical devices and radar systems.