iPhone Spectrum Analyzer Recommendation?

ACHiPo · « **on:** 1 Dec 2014, 04:49 pm »

Any recommendations for a spectrum analyzer app for an iPad or iPhone?

Thanks!

Phil A · « **Reply #1 on:** 1 Dec 2014, 05:33 pm »

I have Studio Six's RTA and SPL on the iPhone which I have used a couple of times. I do have an Audio Control 1/3 Octave RTA so it is not something I'd really rely on much. If I was to get something, I'd do something like - http://www.minidsp.com/products/acoustic-measurement/umik-1 and I understand they have or are working on an App

ACHiPo · « **Reply #2 on:** 1 Dec 2014, 06:11 pm »

Thanks. I've use the iPad and iPhone mics for audio recording with decent results, and I have several good condenser mics and phantom power. Is the issue with mobile devices the calibration?

Phil A · « **Reply #3 on:** 1 Dec 2014, 06:18 pm »

Quote from: ACHiPo on 1 Dec 2014, 06:11 pm

Thanks. I've use the iPad and iPhone mics for audio recording with decent results, and I have several good condenser mics and phantom power. Is the issue with mobile devices the calibration?

My Audio Control 1/3 Octave RTA of course has a calibrated microphone. Using the microphone built into the iPad or iPhone is going to be limiting as could be the software which may not work as well with some things vs. others. At some point I may try the minidsp microphone and App. For budget stuff, if you have a Radio Shack SPL Meter, there is also - http://www.rivesaudio.com/software/softframes.html

TomS · « **Reply #4 on:** 1 Dec 2014, 09:02 pm »

I use AudioTools Studio Six with the calibrated Dayton iMM-6 mic on an iPad and it works great.

http://www.parts-express.com/dayton-audio-imm-6-calibrated-measurement-microphone-for-iphone-ipad-tablet-and-android--390-810

Russtafarian · « **Reply #5 on:** 1 Dec 2014, 11:40 pm »

The AudioTools Studio Six is the one app to rule them all. The FFT analyzer is awesome and way more powerful than the RTA.

Russ

ACHiPo · « **Reply #6 on:** 1 Dec 2014, 11:53 pm »

Quote from: Russtafarian on 1 Dec 2014, 11:40 pm

The AudioTools Studio Six is the one app to rule them all. The FFT analyzer is awesome and way more powerful than the RTA.

Russ

Russ, et al,
Thanks! That's the endorsement I was looking for. I found the app.

AC

TomS · « **Reply #7 on:** 1 Dec 2014, 11:55 pm »

Quote from: ACHiPo on 1 Dec 2014, 11:53 pm

Russ, et al,
Thanks! That's the endorsement I was looking for. I looked for it on the app store, but couldn't find it. Do I need to contact AudioTools directly?

AC

https://itunes.apple.com/us/app/audiotools/id325307477?mt=8

ACHiPo · « **Reply #8 on:** 1 Dec 2014, 11:57 pm »

Quote from: TomS on 1 Dec 2014, 11:55 pm

https://itunes.apple.com/us/app/audiotools/id325307477?mt=8

Thanks. I found it.

JohnR · « **Reply #9 on:** 2 Dec 2014, 03:16 pm »

With these apps the mic is important, I see the OP has external mics and preamp but for others please be wary of results with the internal mic. The IMM-6 is an improvement, miniDSP UMIK-1 better yet. (Tested with an iPad not an iPhone.) See: http://johnr.hifizine.com/2014/08/ipad-measurement-mics/

ACHiPo · « **Reply #10 on:** 2 Dec 2014, 07:40 pm »

Quote from: JohnR on 2 Dec 2014, 03:16 pm

With these apps the mic is important, I see the OP has external mics and preamp but for others please be wary of results with the internal mic. The IMM-6 is an improvement, miniDSP UMIK-1 better yet. (Tested with an iPad not an iPhone.) See: http://johnr.hifizine.com/2014/08/ipad-measurement-mics/

John,
Thanks for the tip. From the app documentation it sounds like they have ways to overcome bandpass filters internal to the iPad/iPhone. I've used both my iPhone and iPad for recording drums with very good results, but that doesn't necessarily mean they're linear.

My primary concern is bass management at this point.

AC

BobC · « **Reply #11 on:** 11 Feb 2015, 06:33 pm »

Noob question. So can I use this App and Dayton iMM6 to test my room, i.e. generate frequency response curves before and after the addition of room treatments?

BobC · « **Reply #12 on:** 11 Feb 2015, 09:04 pm »

So, how do I get the test signal from the App to my stereo?

I guess I also need to buy a microphone pre of some sort?

BobC · « **Reply #13 on:** 11 Feb 2015, 09:16 pm »

nevermind....I think I figured it out.

Just connect a microphone (Dayton iMM-6) into my iPhone Audio Tools RTA. And simply connect the iMM-6 headphone out into my preamp. Then use the app to send test signals, correct?

ACHiPo · « **Reply #14 on:** 11 Feb 2015, 09:51 pm »

I use the mic built into my iPad. I use the app two ways--one is to connect the iPad to my Oppo 105 via HDMI for Impulse Response measurement, the other is to play pink noise and just use the RTA or FFT function.

BobC · « **Reply #15 on:** 12 Feb 2015, 03:06 am »

So you don't NEED to buy the external mic? The iMM-6?

ACHiPo · « **Reply #16 on:** 12 Feb 2015, 04:24 am »

I get data without it. While the internal mic is not calibrated, I think it's good enough for comparisons.

BobC · « **Reply #17 on:** 12 Feb 2015, 02:23 pm »

Thank you!

a.wayne · « **Reply #18 on:** 12 Feb 2015, 05:48 pm »

The internal mic, is not good below 100 hz or above 8 K ......

BobC · « **Reply #19 on:** 12 Feb 2015, 06:22 pm »

I've got the iMM-6 on order from Parts Express.

Will download Audio Tools for App store and give it a shot.