Octave: An RTA for the iPhone
By Alex Wiltschko
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Octave is a real-time spectrum analyzer for the iPhone and iPod Touch that uses time-domain analysis, rather than FFT techniques. Octave follows strict ANSI certifications for sound analysis, found on multi-thousand dollar sound equipment. You can have pro-quality sound analysis on your iOS device for tiny fraction of the cost!
See your sound in detail with up to 1/12th octave bands. Quickly find out peak frequencies with a swipe to access the cursor, and tap-and-hold to freeze the audio with live spectrum averaging (it will turn blue, slow down, and look completely radical).
What's New in Version 1.3
The most requested feature is finished! Tap and hold to get an average spectrum of the sound around you. Real-time averaging!
COMING IN SOON:
- Saving average curves (some of the UI is finished, but I'm polishing the rest of the experience — it's not quite perfect).
- Pink noise generation
- Mic calibration
I like the ballistics and general screen manipulation via gesturing. I would like to see the ability to specify the dB/division and the range, # of divisions, of the vertical scale. There also seems to be something of a LF deficiency. Below ~100Hz there is little energy displayed even in the presence of ridiculous subwoofer levels. Perhaps this is some byproduct of the sampling rate that is not specified. Actually it'd be nice to be able to select the sample rate/sample size. Perhaps there is some HPF filter in the iOS that needs to be disabled? I'm confident it is not my mic or iPad as other frequency analysis programs indicate the LF appropriately. Other than that mentioned I like the app and look forward to improvements.
User Support 101
I've used this app for quite some time with great success! As an FOH engineer, it tells me what I need to know better than RTA's far more expensive than this fantastic app.
What seals the deal for me is the support I got directly from the developer. There was a small (and simple) issue I had and he was on top of it immediately! User error, but the dev still helped me through!
Good but needs refinement
I like the app and its layout and it even has a way to adjust the vertical scale resolution by pinching but once you expand it to a 1db per division scale, the response curve is out the top of the display. It either needs a way to scroll up instead of centering around 0 or it needs some form of attenuation adjustment to move the curve down where it's visible so I can tune to a +/- 3 DB curve for room equalization
- Category: Music
- Updated: Apr 02, 2012
- Version: 1.3
- Size: 2.2 MB
- Languages: English, Basque, Chinese, Dutch, French, German, Japanese, Korean, Vietnamese
- Seller: Alexander Wiltschko
- © 2010 Alex Wiltschko
Compatibility: Requires iOS 4.3 or later. Compatible with iPhone, iPad, and iPod touch.