miniDSP UMIK-1 Omni-Directional USB Measurement Calibrated Microphone

Product Information

Special features such as calibrated SPL measurement enabled under free Room EQ Wizard (REW) software MiniDSP is pleased to introduce the UMIK-2, its second-generation omni-directional acoustic measurement microphone. The UMIK-2 has everything that made the first-generation UMIK-1 one of our best selling products, including a convenient plug-and-play USB connection and a unique calibration file for each microphone to ensure accuracy. Mount the UMIK-1 into the small stand supplied with it, or if you like, you can use any other microphone stand. To connect the UMIK-1 to your Apple iPad, you will need either the Lightning to USB adapter (for newer iPads with an 8-pin Lightning connector) or the Camera Connection Kit (for older iPads with a 30-pin connector). This photo shows an iPad mini connected to the UMIK-1 via the Lightning adapter:

In this application note, we will show you how to integrate a subwoofer with your existing loudspeakers by using a miniDSP 2x4 HD. You can use an existing preamp, or replace a preamp and a DAC with the miniDSP 2x4 HD. (In the latter case, you will need to program a remote control to adjust volume in the miniDSP 2x4 HD.) In this application note, we will show you how to design an active 2-way loudspeaker with the miniDSP 2x4 HD. Using the 2x4 HD, you can either create a conventional (Linkwitz-Riley or Butterworth) crossover, or a linear phase crossover. The scale at the right of the graph is the phase values. Since we are not looking at phase in this app note, this can be ignored.) The UMIK-1 is an Omni-directional USB measurement microphone providing plug-and-play acoustic measurement. From speaker and room acoustic measurement to recording, this microphone provides low noise and accurate results you can rely on. Forget about driver installation, OS compatibility and un-calibrated mics. The UMIK-1 is a USB Audio class 1 device automatically recognized by Windows, Mac and Linux operating systems, and iPad with camera connection kit. It is provided with a unique calibration file based on the serial number to insure an accurate measurement. Combined with our recommended acoustic measurement software, it is the perfect match for a plug-and-play measurement system. For multichannel system (E.g. 5.1/7.1) or a surround application where multiple speakers are spreadout around the room, use the 90deg file and point the UMIK-1 at the ceiling. Recommended by our Friends

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The UMIK-2 is of course fully compatible with REW (Room EQ Wizard) and Dirac Live (version 3 and later). Driverless operation with macOS, Linux, Android and iOS, and a supplied ASIO driver for Windows ensure simple integration into many other measurement and recording applications. With the UMIK-2, miniDSP once agains stretch the limits of affordable acoustic measurement gear. Let the measurement fun begin! Features

The UMIK-1 is an omni-directional USB measurement microphone providing Plug & Play acoustic measurement. The miniDSP team built long term relationships with the following leading software applications and is proud to showcase them as our recommeded software solutions: miniDSP offers products that can be used to equalize a system or apply full-range room correction, such as the nanoDIGI 2x8 (digital in-out, parametric EQ), miniDSP 10x10 HD (multichannel analog in-out, parametric EQ), and OpenDRC-DI and OpenDRC-AN (digital or analog in-out, FIR filtering and room correction). Note that equalization for room correction should generally make use of multiple measurements over the listening area, as measured response will change with microphone position.miniDSP assembled some very comprehensive steps by steps for the UMIK-1 for all sorts of applications. Please make sure to start reading our application notes to be up and running in no time! Note: the distortion components may include distortion from the microphone, so take care in interpreting these results. REW offers a set of plots that show how different frequencies decay in time. These are generally used in the "modal region" of the room's acoustic response, from say 20 to 300 Hz, where resonances in the room dominate the measured frequency response. A well-known plot of this type is the "waterfall" plot, or cumulative spectral decay: REW: miniDSP worked along with John Mulcahy to develop even greater compatibility for the UMIK-1 inside REW! With the latest beta release of REW (v5.01 and up), the UMIK-1 is automatically recognized by the software and prompted for use when REW is started with the microphone plugged in. In this application note, we will show you some basic acoustic analysis techniques that you can apply to measurements of your listening room made with the UMIK-1 and Room EQ Wizard (REW).

How did you position your microphone for each measurement? Just asking because the highest frequencies will be most sensitive to small differences in where the microphone is located. Recall that we applied smoothing to the graph. An in-room measurement has a lot of reflections that create peaks and dips in the frequency response. Above 250 Hz or so, much of this is not relevant to what we hear, so for full-range measurements, 1/3 or 1/6th octave smoothing is generally used. For graphs limited to the low frequency range (up to say 300 Hz), use 1/24, 1/48 or no smoothing. The miniDSP UMIK-1 is the perfect companion to audio analysis programs running on your tablet or even your smartphone. In this application note we will show you how to set up your UMIK-1 with the SignalScope Pro app from Faber Acoustical, running on an Apple iPad. SignalScope Pro is able to set level and frequency response readings (FFT only) from the UMIK-1 calibration data. At this stage the steps to start your YouTube/Facebook/Twitch Live stream or recording a local stream will be similar to any stereo content. If you're not familiar with setting up OBS for Youtube/Facebook live, we recommend you follow some of the great step by step guides to get you started knowing this is a common question. Here are some great examples: Amarra Symphony: Amarra Symphony with IRC is an advanced music file player for the Apple Mac platform. It includes a feature called "Impulse Response Correction" (IRC), that corrects for acoustical errors at the listening position caused by early reflections from the speaker and listening room. It also provides the ability to tailor the response at the listening position using target curves.You're now up and running with the Audio side. You'll want to add your webcam or external video sources to the sources of OBS as per the manual of OBS. The Options screen can be used to set options, such as octave or third-octave display, frequency weighting, response time, and whether or not the display scales automatically. The UMIK-1 is an omni-directional USB measurement microphone providing Plug & Play acoustic measurement. From speaker & room acoustic measurement to recording, this microphone provides low noise and accurate results you can rely on. Forget about driver installation, OS compatibility and un-calibrated mics. The Umik-1 is a USB Audio class 1 device automatically recognized by all Operating Systems (Windows/Mac) and Ipad with Camera Connection Kit. It is provided with a unique calibration file based on the serial number to insure an accurate measurement. Combined with our recommended acoustic measurement software, it is the perfect match for a plug&play measurement system. Recommended values of reverberation time depend on the type of system (e.g. music or home theater), the size of the room, and the type of speaker. However, 300 ms to 500 ms (0.3 to 0.5 seconds) is a commonly recommended range. It can be seen that this room is within this range but towards the high end for a good part of the frequency band. In this app note, we will demonstrate subwoofer integration for miniDSP'sstereoDirac Live processors using only the Dirac Live app for measurement

Why is the graph so uneven? Shouldn't we have a flat frequency response? Mostly, it's because of the room. Room modes (resonances) and reflections in a room act to make a nice flat loudspeaker response into a roller-coaster. This plot shows that there are slowly-decaying resonances around 26, 30, 57 and 74 Hz. With this type of graph, you may need to adjust some display parameters on the Controls and Limits popup windows to get the most useful and informative plot. Please note: miniDSP cannot provide support for third-party applications or hardware. This app note shows you how to set up the miniDSP UMIK-1 to use with SignalScope Pro but other functions of the Apple iPad or the SignalScope Pro app are beyond the scope of miniDSP support.It’s the same ODM as the Behringer, but the build quality is better, and they are more stable in a wider range of temperatures and humidities. You also get a calibration file for each individual mic. I’ve measured up to 125 dB linear without the mic capsule distorting too, which beats the Behringer ECM8000 I’ve tested. Configure OBS as a multichannel stream. Under OBS, go to File -> Settings - > Audio Tab. We'll select 4.0 as the audio configuration. I own some Earthworks M23, M30 and isemCON EMX-7150 as well as the dbx RTA mic, and the aforementioned Behringer. I also regularly use very expensive B&K mics and preamps. For most field work, I use the three Sonarworks mics I own, because they’re good enough for 90% of the audible range and multi-mic measurements are the way forward. Upon opening SignalScope Pro, it will detect the presence of the connected UMIK-1 and query you for its serial number: