UMA-16 USB mic array
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.
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
Specification
| Item | Description |
| 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 |
Documents:
What's in the box?
- 1 x UMA-16 USB microphone array interface
- 1 x 1.5m USB miniUSB cable
- 1 x 12V power supply with EU/UK/US plugs
- Access to the UserDownloads section for ASIO drivers/Firmware updates once the product purchased.
Applications
Make sure to check out our Microphone array application notes for more details.
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