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miniDSP Ltd, Hong Kong / 

www.minidsp.com

 / Features and specifications subject to change without prior notice

 

IMPORTANT

 

INFORMATION 

Please read the following information before use. In case of any questions, please contact miniDSP via the 
support portal at 

support.minidsp.com

System Requirements 

To configure the UMA-16, you will require a Windows PC or Apple Mac computer with the following minimum 
specification: 

Windows 

 

Microsoft• ® Windows® 7/8.1/10/11 

 

At least a dual core i3, i5, or i7 processor 

 

At least 2 GB RAM (4 GB or more preferred) 

 

One free USB 2.0 port 

 

Internet connection 

macOS 

 

OS X 10.8 or higher, macOS 10.12 or higher 

 

At least a dual core i3, i5, or i7 processor, or an ARM processor (M1/Pro/Max) 

 

At least 2 GB RAM (4 GB or more preferred) 

 

One free USB 2.0 port 

 

Internet connection 

Disclaimer/Warning 

miniDSP cannot be held responsible for any damage that may result from the improper use of this product or 
incorrect configuration of its settings. As with any other product, we recommend that you carefully read this 
manual and other technical notes to ensure that you fully understand how to operate this product. The miniDSP 
audio processor is a powerful tool, and misuse or misconfiguration, such as incorrectly set gains or excessive 
boost, can produce signals that may damage your audio system. 
As a general guideline, you should perform the initial configuration of the miniDSP audio processor before 
enabling audio through any connected output device or amplification. Doing so will help ensure that the 
software is correctly configured. 
Finally, note that the miniDSP audio processor is a very flexible device, and many of the questions we receive at 
the tech support department are already answered in this user manual and in the online 

application notes

 on 

the miniDSP.com website. So please take the time to carefully read this user manual and the online technical 
support. Thanks for your understanding! 

Warranty Terms 

miniDSP Ltd warrants this product to be free from defects in materials and workmanship for a period of one 
year from the invoice date. Our warranty does not cover failure of the product due to incorrect connection or 
installation, improper or undocumented use, unauthorized servicing, modification or alteration of the unit in any 
way, or any usage outside of that recommended in this manual. If in doubt, contact miniDSP prior to use. 

Summary of Contents for UMA-16

Page 1: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 1 UMA 16 MICROPHONE ARRAY DEVELOPMENT BOARD User Manual...

Page 2: ...w minidsp com Features and specifications subject to change without prior notice 2 Revision history Revision Description Date V1 0 First version 18 Jan 2018 V1 1 Updated for MCHStreamer Lite interface...

Page 3: ...tivity 8 2 3 Knowles SPH1668LM4H 1 microphones 8 3 USB Audio 10 3 1 macOS 10 3 2 Windows 11 3 2 1 USB Driver installation 11 3 2 2 Status 11 3 2 3 Buffer settings 12 3 2 4 Volume 12 3 2 5 Info 13 3 3...

Page 4: ...understand how to operate this product The miniDSP audio processor is a powerful tool and misuse or misconfiguration such as incorrectly set gains or excessive boost can produce signals that may damag...

Page 5: ...y one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit differen...

Page 6: ...EMS Knowles with PDM outputs A center hole fits an optional USB camera perfect in applications such as acoustic cameras The microphone array is a simple 2 layer design that can easily be customized to...

Page 7: ...without prior notice 7 2 BOARD LAYOUT AND CONNECTIVITY 2 1 BOARD LAYOUT The below diagram shows the layout of the UMA 16 board Sixteen MEMS microphone are laid out in a Uniform Rectangular Array URA d...

Page 8: ...Hz See section 3 for more details on USB audio connectivity The array is powered over the USB connection so there is no need to separately connect power 2 3 KNOWLES SPH1668LM4H 1 MICROPHONES The UMA 1...

Page 9: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 9 Acoustic performance under the Performance Mode default...

Page 10: ...5k 12k 16k 22 05k 44 1k 48k over its USB Audio Class 2 UAC2 compliant interface Here are more details on setup and configuration 3 1 MACOS Open the program Audio MIDI Setup in Applications Utilities T...

Page 11: ...nce the driver installation completes click the Finish button The Windows PC will not be able to communicate properly with the UMA 16 if you did not have it connected by USB and powered on when you in...

Page 12: ...ency settings require high amounts of CPU and memory and may not work on some machines If you do not require lowest latency we recommend that you do not depart from the default safe settings 3 2 4 Vol...

Page 13: ...software with ASIO support Not all software supports such needs For example the Audacity freeware only supports WDM and therefore won t work We recommend a Digital Audio Workstation DAW such as Reaper...

Page 14: ...tructure If you were to design your own MEMS array and lack the engineering knowledge to do so we strongly recommend that you to seek 3rd party engineering support Thanks for your understanding 4 1 HE...

Page 15: ...al data line These 16 channels are mirrored in I2S format on J1 and are also received by the computer over USB Table 1 PDM firmware pinouts J1 pin J3 pin 1 PDM Rx 1 2 1 GND 2 PDM Rx 9 10 2 3 3V 3 PDM...

Page 16: ...igital audio noise immunity high quality audio at very low cost PDM CLK The PDM clock always runs at 3 072MHz PDM 0 7 Each data lines carrying a stereo feed of 2 x microphones by using the SELECT PIN...

Page 17: ...chronous USB audio up to 48 kHz USB Audio Class 2 compliant ASIO drivers for Windows Driverless for macOS PDM inputs Up to 16 x MEMS microphone connections 8 x stereo PDM data lines MEMS microphone on...

Page 18: ...specifications subject to change without prior notice 18 5 2 MCU FIRMWARE UPDATE 5 2 1 Windows 1 Connect the UMA 16 to your computer via USB if not already connected and power it on 2 Start the miniD...

Page 19: ...k on the Browse button navigate to the folder XMOS_Firmware in the plugin download folder and select the firmware file 5 Click on the Start button 6 You will get a progress bar as upgrade proceeds 7 O...

Page 20: ...accessories b A clear explanation of the symptoms you are seeing c A description of troubleshooting steps see Troubleshooting above performed and your results Please note that miniDSP is only able to...

Page 21: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 21...

Page 22: ...miniDSP Ltd Hong Kong www minidsp com Features and specifications subject to change without prior notice 22...

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