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11
SignalScope / Re: RTA Averaging
« Last post by peterlufrano on November 07, 2017, 04:28:05 PM »
Well, I'd like to be able to take RTA measurements, moving the mic around the listening position where the listeners head would be situated during the 20 second interval, and have the RTA average the measurements taken during the 20 second interval.

(I hope that makes sense!)

Can it do that? if so, how do I do that?

Many thanks for your indulgence!
12
SignalScope / Re: RTA Averaging
« Last post by FaberAST on November 07, 2017, 03:39:50 PM »
What would you like to do with averaging?
13
SignalScope / Re: RTA Averaging
« Last post by peterlufrano on November 01, 2017, 03:42:09 PM »
Hi,
Thank you for your response.
I found that, but I can't seem to find anything pertaining to how to use the averaging function.

Do you happen to have instructions you could give me?

Thank you in advance!
14
SignalScope / Re: RTA Averaging
« Last post by FaberAST on November 01, 2017, 02:46:45 PM »
In SignalScope, you'll see an info button (a little 'i' in a circle) on the right side of the toolbar at the top of the screen. Tap that, and then tap on Help.
15
SignalScope / Re: RTA Averaging
« Last post by peterlufrano on October 30, 2017, 06:24:16 PM »
Hi,

Thank you for your response!

this "SignalScope's built-in documentation" you mention. How do I access this?

thank you in advance!
16
SignalScope / Re: RTA Averaging
« Last post by FaberAST on October 30, 2017, 06:10:15 PM »
Hi,

The Octave analyzer tool (RTA) supports both exponential (Lp) and linear (Leq) averaging of the signal in each whole or 1/3-octave frequency band. For exponential averaging, Fast, Slow, and Impulse time weightings are supported. For linear averaging, the average level is calculated over the entire duration of the measurement.

SignalScope's built-in documentation includes information on how to access the averaging options.

Let us know if you have more questions.
17
SignalScope / RTA Averaging
« Last post by peterlufrano on October 30, 2017, 10:03:11 AM »
Hi all,

I am wanting to confirm that the RTA program does indeed perform measurement averaging?

am I correct that when running the RTA program, the softwar averages the response measurements made during and controlled  the "duration" time that is specified in the submenu?

As there is no user manual that I have found, I am hoping to confirm this, and also if possible know the proper method/instructions for making use of this functionality please.

Many thanks in advance!
18
SpeakerDraft / Re: Dual Speakers
« Last post by Colin Edwards on September 21, 2017, 02:54:59 PM »
I also requested a multiple-driver option for Speaker Draft app shortly after purchasing it, however, I found a simple way around the problem, which I believe gives accurate results. 

1. Select a preset driver from the list or insert TS values for a new one you intend to use.   

2. Estimate the dimensions for the cabinet you want and Calculate volume and reflex port dimensions for just one driver.

3. Double the volume of the enclosure, and this should be suitable for two identical drivers and two identical reflex tubes. 

If my design does not work out well or sound as it should I will post again to say so.
19
SoundMeter / Calibrate MicW i437L
« Last post by mgolden on August 28, 2017, 01:10:13 PM »
I hope someone can help.  I just got one of MicW new i437L microphone with a lightning connector. This seems to be a digital microphone which I have not really used before.  The unit comes with a tested sensitivity of 24.8 Pa/FS.  The nominal sensitivity on the datasheet is -27.5dBFS (94dB SPL @ 1kHz).

In the input options of the I/O Configuration I have set the Device Units to "FS" and the Gain at "Mid".  Under Input Channel menu, I have set Units to Pa and entered in the tested sensitivity.

It is the gain setting that I am not sure of.  Changing gain changes the SPL.  Mid seems to give the result that is closest to what I think the measurement should be.

Next time I am near an acoustic calibrator I plan on checking the calibration. 

Thank you in advance.
20
SignalScope / UMM-6
« Last post by CBowers on August 20, 2017, 09:40:36 PM »
Hello,

For some time my Dayton UMM-6 mic has not be prompting to enter the serial number to calibrate and shows up as a generic plug and play mic.
I've seen the help note here suggesting to unplug and replug it a few times, but that doesn't seem to help.
My other mic, the Umic-1 works fine.
I thought perhaps it might have been that I'm using the original USB camera adapter with a 30pin to lighting adaptor.  But that still works fine with the Umik-1 on an iPad Air 2. 
And I see the Umm-6 still behaves that way on an iPad Pro 10.5 with the current USB camera adaptor.
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