UMA-8-SP USB mic array
USB microphone array + Digital Audio amplifier, DSP processing for Beamforming, AEC, Noise reduction, 2ch and 8ch mode
The UMA-8-SP is a high-performance USB microphone array paired with a digital audio amplifier. Seven high-performance MEMS microphones are configured in a circular arrangement to provide high-quality voice capture in farfield microphone applications such as AI assistants, conferencing, robotics…
Leveraging the onboard DSP processing from XMOS XVSM3000, the UMA-8-SP supports voice algorithms including beamforming, noise reduction, acoustic echo cancellation and de-reverb. The UMA-8-SP is a fully compliant UAC2 audio interface with driverless support for Mac/Linux and ASIO drivers for Windows. An onboard 2x15Wrms digital amplifier provides an all-in-one microphone array + amplifier integration. The perfect fit to build your own AI assistant or conferencing unit.
From DIYers to OEM, this pocket-size platform is engineered for flexibility in firmware, software and hardware. Feel free to contact miniDSP on how we can help kickstart your new project!
Features
- Multichannel USB microphone array for voice command powered by XMOS XVSM3000
- Digital Audio Amplifier (2x15Wrms)
- Onboard DSP for beamforming/ noise reduction / echo cancellation / de-reverb / Direction of Arrival (DOA) / Voice Activity Dectection (VAD)
- Ring with 11 LED RGB
- High quality MEMS from Knowles SPH1668LM4H
- Flexible Firmware (DSP mode @2ch beamformed, RAW mode @8ch audio from MEMS)
- Step by step app notes for Google SDK, Alexa-Pi, Cortana, Siri, IBM Watson and Matlab. More coming up soon...
Product Downloads
What's in the box?
- 1 x UMA-8-SP USB microphone array interface
- Access to the drivers/firmware under the UserDownloads section once the product purchased
- 1 x 1.5m USB type B cable
Options
- External 12V 3.5A Power supply
UMA-8 + RPi + nanoAVR for voice control of your AV system
| Item | Description |
| USB streaming engine | XMOS XSVM 3000 - Multicore USB audio processor with embedded DSP |
| USB audio capabilities | USB audio recording in 2 possible modes depending on firmware: - 8-channel mode (7 x MEMS installed + 1 x spare PDM port in the center) - Stereo recording with DSP processing enabled USB audio playback: Mono I2S channel for I2S out (e.g. external amplifier/DAC board.) |
| DSP processing (prebuilt firmware) |
|
| UAC2.0 drivers |
Driverless interface for Mac OS X v10.6.4 and up Thesycon Windows ASIO driver (All versions) |
| Resolution / Sample rate | 24bit @ 11/16/32/44.1/48 kHz |
| Amplifier output | Stereo class D amplifier / 2x15Wrms amplifier output (Mono Audio Output) >90% efficiency at full power. |
| MEMS microphones | 7 x Knowles SPH1668LM4H with low noise buffer and high performance modulator
|
| LED | 12 x RGB LED / Bottom mounted |
| Expansion connector | 2 x 12-pin, 2 mm pitch expansion connector for connectivity to hardware. |
| Power supply | USB powered (Amplifier disabled) or +12VDC (Amplifier enabled) |
| Dimensions (diameter) mm | 90 mm diameter / 20mm height with LED ring, 14mm height without LED ring |
Community Forum
FAQ's & Support portal
Application notes on UMA-8 Microphone array
The miniDSP UMA-8 microphone array, with onboard direction detection, echo cancellation, and noise reduction, has a wide array of applications. In this app note we'll run through its use with Amazon's Alexa "personal virtual assistant" to build your own "Echo".
UMA-8 + RPi + nanoAVR Demo
Follow our step by step app note to get Siri up and running with your UMA-8 microphone array.
Make full use of UMA-8 beam forming capabilities with your Windows OS + Cortana. 
In this step by step app note, we walk through the steps to buid a chatbot with WATSON
