Hub DSP Receiver: Audio Processing and Features

The Hub DSP receiver is the central component of your Catchbox Plus system. It acts as a wireless receiver, digital signal processor (DSP), and mixer all in one, potentially replacing separate equipment and simplifying your setup.

💡To see exactly where these settings are located on the physical device, check out or download our Hub Interface map.

Dual Processing Paths
Flexible Output Routing & Use Cases
USB Audio Interface
Dante Audio
Channel Cloning
Automixing

Dual Processing paths

Hub processes audio through 2 paths simultaneously, each optimized for a specific use case.

Far-end / USB Path
Optimized for remote participants (Zoom, Teams, Google Meet etc.). It focuses on speech clarity and reduces listener fatigue.

In-room Path

For in-room voice lift. It includes feedback suppression to prevent screeching, which is critical in unsupervised spaces.

Flexible Output Routing & Use Cases

Hub allows you to choose exactly what signal is sent to each port.

Port Name	Available Channels	Often Used For
MIXOUT L&R 3-PIN	2 (left and right)	Loudspeakers. Sending the final, processed mix to the room's sound system.
MIXOUT RCA	1	Assistive Listening/Recording. An easy connection for hearing loops.
MIXOUT USB-C	1	Computer Integration. The primary plug-and-play connection for video calls.
FLEX 3-PIN	2 or 4	External Mixing. Sending each mic as a raw unmixed signal to an external mixer.
Dante (Network)	2x2 or 4x4	Digital Infrastructure. Sending/receiving audio over the network.

USB Audio Interface

Hub acts as a plug-and-play USB speakerphone. When connected via USB-C, it handles both your microphone audio (going to the call) and the call audio (coming from the computer to your room speakers).

Dante Audio

If your Hub has Dante Networking Module, this module supports both Input and Output.

Dante Out: Send your Catchbox microphones to the building's digital audio network.

Dante In: Receive audio from other network sources to be mixed with the Catchbox microphones.

Channel Cloning

For maximum flexibility, the Hub allows you to Clone your primary mix. For instance you can set your RCA or 3-PIN ports to mirror the Main Mix. If you are using the 3-PIN outputs for your main room speakers, you can Clone that same signal to the RCA port to feed a secondary recorder.

Automixing

Hub tracks all active Catchbox microphones in real time. It prioritizes the person speaking while discreetly lowering the volume of other mics to eliminate background noise and room echo.
While you can mix in external sources, the Automixing logic focuses exclusively on Plus system microphones.