Audio Spectrum Analyzer dB RTA

We had encountered a buzzing noise that came and went. The noise was coming from the ceiling my office like it was originating in attic. Was it a bee hive or hornet infestation, wind causing vibrations in eves or loose roof components or more serious issue some kind of electrical hum or buzz. I thought if only I had a spectrum analyzer I could rule out an electrical issue if the noise was 60 HZ or a 120 Hz harmonic. So I thought my phone has a microphone and it certainly could analyze sound . So I found this App for my iphone. It showed the primary vibration was 101 HZ so I felt relieved. But what was it? The room next door was a bathroom and the noise was louder but still coming from the ceiling. So then I thought toilets can cause funny noises. I took off the tank lid and waited until the noise was loudest and touched the float arm hitch was connected to the auto shutoff valve . It was vibrating like crazy and the noise went away . But I still could not understand why the noise was coming from above. Then I thought the plumbing stack vent was just like a pipe in a pipe organ. The vibration in the tank made the column of air in the stack vent resonate. Strangest annoying sound and plumbing issue I have ever heard of in my life. I fixed it by turning the float adjustment screw just a bit. The technology in a smart phone seems to be unlimited.

It gets four stars because IF you only wanted to use the not so great built-in microphone of your device then it seems to work very well. I was actually willing to pay for a way to unlock a Line-In feature but nothing told me that the feature exists. The fact that the spectrum plot can hold the peaks is a real nice and makes your app more useful. The pop up is super annoying, but being an App developer myself...I understand how selfish people just expect a great feature rich App to be all for FREE (i gave up thinking i could be paid for all my hard work). Just for fun, you can check out my Free iPhone App FlipNshare ProVideo. I did uninstall the app only because i need Line-In feature, please let me know if it’s actually available.

App works great, the graphs and functions are decent and well laid out. The one big frustration is the CONSTANT popup asking me to buy the pro version. Left the graph running on my desk for a moment, it popped up. Close it, watch the graph. A minute later, it popped up again. It ended up popping up and blocking the entire screen four times in under ten minutes. If the popup was less frequent (maybe on app launch and every ten minutes or less), or costs less ($8.99 for pro), I’d rate this better. I’m not paying for the pro version simply due to how annoyed I was at the pushy attitude of the app, and have since uninstalled it.

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Unsure if there is a timed interval of the pop up advertisement to purchase the “Pro” version or if it is based on how many times you touch something in the app, but it gets very frustrating trying to adjust a complex audio system, while constantly being asked if would like to buy the pro version, which runs $8.99. Annoyances aside, the frequencies being gathered (by 3 additional Apple products, 4 total) seem to be less accurate than they should be. Adjusting 250hz on my head unit’s EQ effected the 125hz bar on the graph in the app. Actively looking for another app that can be more successful.

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This app works great and has a very nice interface. The only and very big downfall is every 2 minutes, I timed it, the app will stop working and a full page ad to “upgrade to pro version” covers the entire screen. You then have to press the close button to get rid of it and your good to go. Then 2 minutes later the same thing pops up. This will happen every 2 min as long as you are using the app. Very very distracting and annoying. If it was for this it would be 5 stars.