miniDSP UMA-16 v2 Mic Array

The UMA-16 v2 is the updated version of our sixteen-channel microphone array with plug&play USB audio connectivity. With its onboard XMOS interface, the UMA-16 is the perfect fit for the development of beam-forming algorithms or your DIY acoustic camera. Its system architecture consists of two core elements:

- A microphone PCB with 16 x Knowles PDM MEMS microphones in a uniform rectangular array (URA). A center hole fits an optional USB camera for applications such as acoustic cameras. The microphone PCB is a simple 2-layer design that can easily be customized to your needs by following our schematics included in the user manual.

- Stacked on top of the mic array is the MCHStreamer Lite USB interface. This XMOS XCORE interface allows for a high quality PDM to PCM conversion and presents all 16 channels of raw audio to the USB interface.

Features

• Multichannel USB microphone array for voice command
• 16 channels of RAW audio for development of custom beamforming algorithms
• High quality MEMS from Knowles SPH1668LM4H
• USB to PDM conversion for up to 16 x PDM MEMS microphones
• Center Hole for USB camera (Not provided)
• Sample Matlab code to get started

Item                            Description
USB audio Input         XMOS Xcore200 asynchronous USB audio up to 48 kHz, USB Audio Class 2 compliant
                                   ASIO driver for Windows
                                    Driverless for macOS

PDM inputs                  Up to 16 x MEMS microphone connections (8 x stereo PDM data lines)
MEMS microphone     16 x SPH1668LM4H - Acoustic Overload @ 120dBSPL / High SNR of 65dB / RF shielded
ADC/DAC Sample rate &    Resolution: 24 bit
Resolution                     Sample rate:  8, 11.025, 12, 16, 32, 44.1 or 48 kHz
USB port                      USB port type Mini-B for audio streaming and firmware upgrade
Power supply               USB powered
Dimensions (HxWxD)mm     132 x 202 x 18 mm
Mounting                       4 x M3 holders for front panel mounting /  CAD drawings available on demand