RASPIAUDIO Voice DSP Full Speaker

One mid-bass driver. One tweeter.

The V2 concept uses the two main amplifier channels separately: one for the mid-bass driver and one for the tweeter. Active crossover filtering divides the frequency range, while dynamic DSP equalization shapes the playback response.

This is one two-way speaker system, not a left/right stereo pair. The two passive radiators support bass reproduction without being electrically driven.

Designed as one assembled system

• Mid-bass driver and tweeter integrated into the larger enclosure.
• Two passive radiators.
• Anti-vibration mounting to limit mechanical coupling.
• Compact Voice module inserted into the top shell.
• Open woven-style printed outer cover.

Final tuning and enclosure validation are still in progress. No frequency-response, SPL or bass-extension measurement is claimed here.

Four microphones + XVF3800 DSP

A dedicated audio processor handles the microphone array before audio reaches your assistant or computer. The integrated microphones form a 44 × 44 mm square.

• Beamforming: focus the microphone array on the person speaking.
• Acoustic echo cancellation: use the playback signal as a reference to reduce the sound of the device’s own speaker in the microphone stream.
• Noise suppression: reduce steady background sounds such as a fan.
• Dereverberation: reduce the effect of room reflections.
• Automatic gain control: keep speech levels more consistent.
• Direction of arrival: use the estimated voice direction for visual feedback or your application.

A wave. A press. A little light.

• 24 addressable RGB LEDs for sound direction, assistant activity and custom status feedback.
• Four physical buttons with software-defined actions.
• PAJ7620U2 gesture sensor for configurable touch-free actions such as volume or playback control.
• 3.3 V Qwiic I2C expansion via a JST 1 mm connector for compatible integrations.

Gesture mappings, button actions and LED behaviour depend on the installed firmware. Gesture control is not room-presence detection.

Home Assistant first

The included CoreZero S3 runs ESPHome and the voice-satellite application. Connect it to your Wi-Fi and configure your Home Assistant Assist pipeline. Local or cloud speech services are your choice.

The audio DSP handles the four microphones and playback-echo reduction. The controller or host handles wake-word detection; the XVF3800 does not run the wake-word model.

USB when you need it

With compatible firmware, use the system as a USB microphone and playback device for voice applications on a computer. Follow revision-specific instructions when switching between USB and ESPHome operation.

For development, the underlying board retains Raspberry Pi I2S/I2C integration and configurable controls. The assembled pack does not include a Raspberry Pi.