MiniDSP UMIK-1 Microphone - Page 15 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #141 of 887 Old 01-24-13, 02:20 AM
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Re: MiniDSP UMIK-1 Microphone

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I don't think that's the problem, I'm using the SPDIF output of the Realtek sound device on my motherboard and all effects are turned off. It's the same output I use for all sound playback in Windows. I don't use any soundcard calibration file in REW, neither for the Behringer or the UMIK.

Just to clear up, is your ECM8000 mic individually calibrated?

Why aren't you using the UMIK calibration file?
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post #142 of 887 Old 01-24-13, 01:35 PM
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Re: MiniDSP UMIK-1 Microphone

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Just to clear up, is your ECM8000 mic individually calibrated?

Why aren't you using the UMIK calibration file?
No, the ECM8000 is not individually calibrated (that's why I bought the UMIK).

I've tried both with and without the UMIK calibration file, the frequency response curve looks very similar. I'm not using a soundcard calibration file though.
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post #143 of 887 Old 01-24-13, 05:29 PM
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Re: MiniDSP UMIK-1 Microphone

Hi can we do 5.1 with hmdi or just left and right channel now
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post #144 of 887 Old 01-25-13, 06:27 AM
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Re: MiniDSP UMIK-1 Microphone

I think the goal is to be able to run all channels either individually or in pairs using a computer equipped with HDMI output and ASIO audio drivers for the output signal. Not sure if it's limited to 5.1 or 7.1.
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post #145 of 887 Old 01-25-13, 09:56 AM Thread Starter
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Re: MiniDSP UMIK-1 Microphone

If I am not mistaken REW would need to produce a 5.1 signal for your processor to be able to decode it and at this time it does not. I believe John has talked about adding this in one of the future releases.


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post #146 of 887 Old 01-25-13, 10:15 AM
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Re: MiniDSP UMIK-1 Microphone

Hi my laptop is two year old Dell xps the audio driver is need to download or already in there the idea is REW to know room acoustics and correct it to install acoustic panels or get eq box to fix it
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post #147 of 887 Old 01-25-13, 03:35 PM
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Re: MiniDSP UMIK-1 Microphone

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I have purchased a UMIK-1 and has done some measurements in REW (beta 13) under Windows 7. The results are very strange compared to measurements with my Behringer ECM8000
Could you post the .mdat file for the two measurements? Also, any special reason you are using a linear frequency axis rather than log?
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post #148 of 887 Old 01-25-13, 03:38 PM
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Re: MiniDSP UMIK-1 Microphone

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akhtarmoughal wrote: View Post
Hi can we do 5.1 with hmdi or just left and right channel now
If you are using a laptop or computer that has multi-channel HDMI output you may be able to choose the various channel pairs as outputs in REW. Sometimes those are available when using the Java drivers, but more often it is necessary to use ASIO drivers - installing ASIO4All is a way of providing ASIO drivers for an HDMI output if they are not already installed.
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post #149 of 887 Old 01-26-13, 04:02 AM
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Re: MiniDSP UMIK-1 Microphone

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Could you post the .mdat file for the two measurements? Also, any special reason you are using a linear frequency axis rather than log?
I'm attaching a new measurement I just did comparing the two mics. No particular reason why I use the linear axis, haven't thought about it actually.
Attached Files mic2.mdat (5.62 MB) 
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post #150 of 887 Old 01-26-13, 04:49 AM
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Re: MiniDSP UMIK-1 Microphone

I tried using another Windows application to sample a 1 kHz sine wave (generated in REW) using the UMIK-1. I can play back the sample and hear the tone but it's at a very low volume and there's a lot of background noise. When I try to sample a 100 Hz sine wave there is nothing but noise in the recorded sample. This is at a sound level so high I have to cover my ears.

Clearly the mic can't be working correctly, right?
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