The UMA-16 is a high-performance yet low cost 16 channel USB microphone array with plug&play USB audio connectivity. With its onboard SHARC+XMOS controller board, the UMA-16 is the perfect fit for development of beamforming algorithms or DIY acoustic camera. Its system architecture consists of two core elements:
- The microphone array PCB has 16 x SPH1668LM4H MEMS Knowles laid out in a Uniform Rectangular Array (URA). A center hole fits an optional USB camera for applications such as an acoustic camera. Being a simple 2layer PCN, one can easily customize his own array layout by following our schematics.
- At the helm of the UMA-16 operation is the nanoSharc kit. A 400MHz SHARC ADSP21489 + 500MHz multicore CPU providing substantial processing power for high SNR PDM to PCM conversion and multichannel low latency USB audio.
The UMA-16 can also be used as a low cost USB to PDM mems board to acquire and convert audio for 3rd party MEMS.
With the UMA-16, miniDSP makes high channel count microphone array processing very affordable and hopes to further technological advances for beamforming technology.
|Digital Signal Processor||32-bit Floating point Analog Devices SHARC ADSP21489 / 400 MHz - Configuration locked|
|USB audio input||XMOS Xcore200 asynchronous USB audio up to 192 kHz, USB Audio Class 2 compliant
|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||
Resolution: 24 bit
Sample rate: 14.7k/11.025k/12k/16k/22.05k/44.1k/48k
|USB port||USB port type Mini-B for audio streaming and firmware upgrade|
|Power supply||12 VDC single supply / Header input / 2.5W|
|Dimensions (H x W x D) mm||132 x 195 x 25 mm|
|Mounting||4 x M3 holders for front panel mounting / CAD drawings available on demand|
Make sure to check out our Microphone array application notes for more details.