InfraSound Detector
Infrasound propagates hundreds of miles and can penetrate walls, mountains and other obstacles without loss.
This detector can be useful in following cases:
To find out any suspicious low frequency noise, vibrations, and sounds in building structures.
To register a number of hazardous atmospheric phenomena, including aircraft wake vortices, clear air turbulence, severe thunderstorms and tornadoes as well as any seismic events and volcano activities. As a benefit, it allows early detection of tornadoes from hundreds of miles away.
To detect underground activity, e.g., tunnel digging.
To detect some kind of infrasonic weapons, that cause physical pain without human detection.
To check out the quality of bass sounds (low frequency) of your subwoofer speaker system as well as any loudspeakers.
Result of detection can be shown on the screen in the foreground mode and also be presented in the notification form and (or) by sound (vibration) in the background mode when the screen of the Android device is turned off. All events can be recorded in the log for later analysis. The lower working frequency is depend on the audio specification of the current Android device and can be reached as low as 4 Hz. For better result, the high quality Android device with internal microphone should be used to determine the infrasound signal, but sensitivity on the lowest frequencies will be worse anyway. Also, you can use a special external infrasound microphone connected to the audio jack (microphone input of the ear plug connector).
The idea of the App is based on the fact that any analog system (microphone and amplifier of your Android device in this case) does NOT have ideal characteristics and infrasound signals can be infiltrate through it down to 4 Hz.
Features.
Completely NO ads.
The signal level indication.
Vibration indication of the alarm event.
Event log is recorded automatically. Signal spectrum and location information can be included in the log.
The converter infrasonic signals into audible sounds. So you can hear infrasonic signals.
Background mode with notifications. Once this option starts, the App runs quietly in the background and requires no human interaction until the alarm event happens. It continues to run even after the device reboots.
Adjustable battery consumption in the background mode. The App is designed to conserve your device battery and allows to select the data update rate. The more update rate time, the less battery it takes.
Comprehensive spectrum analysis with different ways to display results: spectrum, waterfall, oscilloscope.
Adjustable frequency range and selectable frequency resolution between 0.1 and 1 Hz.
If you have any problems or any suggestions to improve this application, please feel free to contact
by e-mail: [email protected]
Thanks!
Category : Tools
Reviews (22)
A very good intuitive app. The settings cover a wide range. To get the most out of this app you would need to be something of an audiologist. I have been looking at infra sound for a while now with a B&K 2203 AND A 4144 mike, that takes me down to about 1 Hz. The transverter function is very interesting. I am working on getting the 2203 output into this app. The mobile electronics don't do it justice A really amazing piece of work.
great application ! it is difficult to find one with spectrum view for very low frequencies. if to add light meter as additional signal source then it would be possible to check led light bulbs quality against flicker noise. i really want to see such feature. thank you Sergio - very good job !!!
Turns its self on. Says hi battery drain even when I don't run it. I like the app, but can't have it popping up and running when I don't need it. It doesn't show any saved data from running in the background so what's the use in it wasting my battery? I'll try to figure out how to stop it or I'll have to uninstall.
Superb app. It works real well. I love the "transfer" tab. Only thing I would like to ask is if you could put a "reccord audio" button in the "transfer" tab. Really satisfied with the app
This app is extremely well designed and a pleasure to use. Great contextual help on every page makes the settings and options easy to understand and use. A terrific learning tool too.
My neighbor runs some equipment on a timer. The vibration and sound is slightly audible to some people at ≈44 Hz and below. I had to increase the max frequency in the settings but it still detects lower than 20 Hz. I used the laptop microphone on an HP chromebook.
Best app of its kind (free OR paid!)!! Actually, irrespective of purpose, it's best app PERIOD!! I'm a developer & this level of quality w/ no ads or upsells is unprecedented! UR helping so many people! A quality, easy to use tool that newbies can use right "out of the box" & offers all the customization imaginable for advanced users!!! The ability to record, log and share activity, graphs (html) and spreadsheet (csv)....too much good! Sergio is angel to TI community! Thank you! God bless!!
App works perfectly. I followed years of scoentific data trying to decipher what is happening. This gang stalking phenomenon thats been happening to me for the last four months. When it began I was so confused and im still terrified, but i cant deny it anymore. This tool verifies my hypothesis. But why me? I dont wish to stop the greater purpose behind it, its just in my nature to want to understand it. Its supposed to happen. We are meant to be a collective species. I dont require programming.
I can't really tell if it works. The graphics are so small. It would work better in dark mode. That's Dark Mode, hint, hint!
Great ..its log is fantastic and precise.very pleased and impressed . When I get hit My alarm goes off its usually Infrasound so it picks it up but they changed ..I need to d/l once in a while.
old galaxy s6 runs it well, will try xenarc rt 71 next, excellent resource buttons, excellent content, top quality app thank you, boom car hood sound check essential gear!
Amazing App. Does exactly what it says. love the simplicity of user interface and the abilty to "Tune" the app to whats best to for the spot Im in. Early warning for severe weather is an eye opener. Hats off to the Dev, what a great and useful app.
Brilliant implementation, finally I've been able to provevthatbim not imagining these deep nearly imperceptible bass notes that nobody else seems to hear or feel, and the real time transfer is genius, thank you Sergio, well done, I'm not mad!
It's very disturbing! These are frequencies I use in my binaural beats epsilon wave meditations (brain wave entrainment), & I seem to be having them coming in through my apartment's AC.
i think it worked but not really sure dont have access to a real infrasound meter to compare to. it is also a huge drain on battery
Totally love it. It seems unbelievable but it works exactly as it is shown and even better. This is the first app I'm reviewing because this app is outstanding!
Absolutely superb and highly accurate at detecting infrasounds. Your app' has enabled me to prove De Cymru Heddlu have been attacking me with infrasonics and also proving they still are! THANK YOU! 🏴
Can help science explorers see the richness of sounds in the environment, that humans cannot detect with their ears. Many different frequencies are produced by wind, or engines but we only hear part of it.
App is very excellent. But please give a dark theme option to prevent distress in vision ❤❤❤....
Awesome frequency range and it can use the microphone and/or accelerometer.
There are dudes that follow me around for some strange reason i can now know when they around or passing by thanks a lot to a man who created it you saving lives just by creating this app
I put my phone next to a known infrasound source of ≈10hz. I could feel my eardrums popping in and out. Various parts of my body were jiggling uncomfortably yet I couldn't hear the sound. The app registered zero. Edit: when I enabled my accelerometer it easily detected the 10 Hz signal. Since the app does, in fact, detect the infrasound, it gets another star. My mic could have a band pass filter that attenuates infrasound before it gets to the app. Alternately, the mic may be sensitive to and saturated by the carrier that generated the infrasound and effectively deafened to the point of not registering the sound. In light of these possibilities I can't give this app a negative review even though it didn't happen to work in my particular circumstance. Infrasound was parametrically demodulated via a complex carrier that has an acoustic DC bias but not an electro-mechanical DC bias. DSBSC-AM modulating this carrier yields a demodulation product -3 dB of the carrier.