The RedVox Infrasound Recorder can capture sub-aural low frequency sound from volcanic eruptions, sonic booms, meteors, earthquakes, tsunamis, surf, and anything big that blows up.
Be part of the world-wide infrasound exploration!
Recording and streaming over wifi or cell starts as soon as you hit play.
The main display shows the infrasonic pressure recorded with the internal microphone and (if available) barometer. Microphones plugged in through the data port or audio jack will override the internal microphone.
Sound files are sent anonymously to the RedVox cloud server at redvox.io.
Your app version and RedVox device ID is shown in the lower center of the front page, and can be changed in Settings.
RedVox Recorder can record in the background to continuously monitor infrasound events and ambient noise. Although continued recording will consume more power, with the screen off it can run off the internal battery for many hours.
We can also save the location of the device so that we can correctly map the infrasound that your device is recording and perform source localization.
In the absence of cell or wifi, Recorder will save to memory and retransmit when communications are restored if the backfill setting is on. A record of the communication dB level is saved when available.
You have access to all the files recorded in your device in a directory you choose during installation.
Continued use of GPS running in the background can decrease battery life.
PRIVACY
-Access to the microphone is needed to run the app.
-The free level only supports 80 and 800 Hz audio.
-At 80 Hz, audio is heavily low-pass filtered below 32 Hz. There is no possibility of conversation or other identifiable human voicing being picked up.
-At 800 Hz audio is heavily low-pass filtered below 320 Hz - in the bass guitar frequency range, and well below the primary speech range of 1-3 kHz.
-Should you choose to use 8 kHz sampling or above at the Premium level, conversational audio could be recorded. The default privacy setting for the higher sample rates is private.
-The RedVox Device ID is either a truncated version of the scrambled vendor ID or user-specified in the settings. It is not traceable to any account or personal information.
This is a really nice app for recording sensor data on your phone. I used it for a class exercise to audio and accelerometer data on multiple phones. In addition to a nice website where you can analyze data, There are excellent python utilities to extract the data off the server and to aid in analyzing it.
Sensor features deleted?
DuftOrpace
I’ve had this app for years and for some reason, the sensors have all been removed except for barometer. It’s a neat app but the accelerometer, gyroscope and magnetometer sensors are gone, and despite having an account, “Data File Settings” and “Custom Settings” are gone too. Quite unusual to remove useful features and customizations, especially when it prevents you from using the report feature that’s promised after registering an account. Why were these options removed?
To the developer
freq221984
What happened fo the listen tool that registered what it was hearing ie “footsteps” “speech” “inside small room”?
Red vo is great
sabrefencer1
This app was great and accurate
-Updated with latest improvements and bug fixes
-Redesigned UI and improved app efficiency
Version 4.10
The developer, RedVox, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Contact Info
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Location
User Content
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
RedVox, Inc.
Size
34 MB
Category
Utilities
Compatibility
Requires iOS 13.0 or later.
iPhone Requires iOS 13.0 or later.
iPad Requires iPadOS 13.0 or later.
iPod touch Requires iOS 13.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
Apple Vision Requires visionOS 1.0 or later.
Location
This app may use your location even when it isn’t open, which can decrease device battery life.
