The Crestron DMC-HD-DSP is an optional input card designed to expand the capabilities of compatible Crestron DigitalMedia switchers and presentation systems. This card adds a high-definition HDMI input with integrated audio extraction and digital signal processing (DSP) to the host chassis. Its primary function is to accept an HDMI audio/video signal from a source device, such as a laptop, media player, or video conferencing codec, and prepare it for distribution within the Crestron ecosystem. The integrated DSP allows for advanced audio management, including level control, mixing, and processing of the embedded audio signals before they are routed to system outputs or audio conferencing interfaces.

A key feature of this card is its support for high-bandwidth video formats, including 4K resolution, deep color, and 3D, ensuring compatibility with modern source devices. It handles HDMI protocol functions such as EDID management and HDCP compliance, which are critical for reliable operation with copy-protected content. The audio DSP capabilities can include features like acoustic echo cancellation (AEC), noise suppression, and feedback elimination when used in conjunction with microphones, making it particularly valuable for integrated videoconferencing rooms where clean, clear audio is as important as video.

The card installs into an available slot in a compatible Crestron switcher chassis, such as a DMPS or DMC series model. Once installed, it is configured and controlled through Crestron's system programming tools, becoming a seamless part of the overall room control system. By combining high-quality video switching with professional-grade audio processing in a single, modular card, the DMC-HD-DSP enables integrators to build more sophisticated, all-in-one AV solutions for corporate, education, and government environments.