Related Manuals for miniDSP UMA-16
Summary of Contents for miniDSP UMA-16
- Page 1 UMA-16 MICROPHONE ARRAY DEVELOPMENT BOARD User Manual miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
- Page 2 Revision history Revision Description Date V1.0 First version 18 Jan 2018 V1.1 Updated for MCHStreamer Lite interface (preliminary) 17 May 2022 miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 3: Table Of Contents
PDM overview ............................16 Additional Information ..........................17 Specifications ............................17 MCU firmware update ..........................18 5.2.1 Windows ............................18 Obtaining support ........................... 20 Schematics .............................. 20 miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 4: Important Information
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 the miniDSP.com website. - Page 5 Notice: Changes or modification not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. CE Mark Statement The miniDSP UMA-16 has passed the test performed according to European Standard EN 55022 Class B. A note on this manual This User Manual is designed for reading in both print and on the computer.
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Page 6: Product Overview
RODUCT VERVIEW Thank you for choosing the UMA-16 audio processor board. The UMA-16 is a cost effective sixteen-channel microphone array with plug-and-play USB audio connectivity. With its embedded XMOS interface, the UMA-16 is the perfect fit for researchers looking to develop their own beam forming algorithms. -
Page 7: Board Layout And Connectivity
ONNECTIVITY 2.1 B OARD LAYOUT The below diagram shows the layout of the UMA-16 board. Sixteen MEMS microphone are laid out in a Uniform Rectangular Array (URA) distribution, with microphone offset set to 42mm. CAD drawings are available on request. -
Page 8: Usb Connectivity
The array is powered over the USB connection, so there is no need to separately connect power. 2.3 K SPH1668LM4H-1 NOWLES MICROPHONES The UMA-16 is fitted with 16 Knowles MEMS microphones. Please refer to the complete datasheet for more details. Features • Low Distortion of 1.6% at 120dBSPL •... - Page 9 Acoustic performance under the Performance Mode (default) miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 10: Usb Audio
USB Audio Class 2 (UAC2) compliant interface. Here are more details on setup and configuration. Open the program Audio MIDI Setup (in Applications->Utilities). The UMA-16 will appear as “MCHStreamer micArray 16” in the list on the left-hand side. Clicking on it will show the input and output channels. Sample rate... -
Page 11: Windows
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 installed the driver. If that is the case, you will need to uninstall the driver, connect the UMA-16, power it on, and run the installer again. -
Page 12: Buffer Settings
To mute all channels, click either of the speaker icons. To control volume separately for each channel, click on the “Link” icon to turn it off miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... -
Page 13: Info
We recommend a Digital Audio Workstation (DAW) such as Reaper/Cubase/Protools for a reliable experience. Also note that Matlab running the latest audio toolbox will support ASIO fine. Please consult Matlab tech support for more details. For an introduction to using the UMA-16 with Matlab, see this app note on our website: •... -
Page 14: Custom Microphone Board Development
OARD EVELOPMENT In an effort to help the community, miniDSP is providing full schematics of the microphone board PCB (nanoSHARC kit not included). Please consult the appendix at the end of this manual. Based on a simple 2-layer design, one can easily route a test PCB to trial various microphone arrangements. - Page 15 Figure 2. PDM firmware signal flow The UMA-16 firmware supports 16 input channels at 8, 11.025, 12, 16, 32, 44.1 and 48 kHz. PDM input data is received on J3, with two channels per physical data line. These 16 channels are mirrored in I2S format on J1 and are also received by the computer over USB.
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Page 16: Pdm Overview
The UMA-16 uses one stereo PDM data line for two mics with a standard configuration as per Knowles app note. All lines use a 3.3V logic level. Ensure that connected circuits use a compatible logic level. -
Page 17: Additional Information
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 UMA-16 16 x SPH1668LM4H ADC/DAC Sample rate & Resolution: 24 bit Resolution Sample rate: 14.7k/11.025k/12k/16k/22.05k/44.1k/48k... -
Page 18: Mcu Firmware Update
5.2 MCU FIRMWARE UPDATE 5.2.1 Windows Connect the UMA-16 to your computer via USB (if not already connected) and power it on. Start the miniDSP UAC2 DFU Tool. The upgrade program will start: miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice... - Page 19 You will get a progress bar as upgrade proceeds: Once the firmware upgrade completes, you will see a message that the upgrade completed successfully: Click on Exit. miniDSP Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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Page 20: Obtaining Support
5.3 O BTAINING SUPPORT Check the forums on miniDSP.com to see if this issue has already been raised and a solution provided. Contact miniDSP via the support portal at minidsp.desk.com with: a. The specific product you are having an issue with (in this case, UMA-16 board or accessories). - Page 21 Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
- Page 22 Ltd, Hong Kong / www.minidsp.com / Features and specifications subject to change without prior notice...
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