Take a look at the https://phyphox.org/ app for lower level access to the sensors on Android and iPhones. There is a GPS section that gives you coordinates but unfortunately doesn’t tell you about each satellite. The precision of other phone sensors seems even more amazing. - Source: Hacker News / 7 months ago

I was using this app and I was like "Oh wow, it has LIDAR? Sweet!". Source: over 1 year ago

Https://phyphox.org/ Available on F-droid (FOSS app store for Android), Google Play, and Apple App store. Source: over 1 year ago

Phyphox (version 1.1.11): Perform physics experiments with your phone. (by the RWTH Aachen University). Source: over 1 year ago

Phyphox really does it for me to get that "a tricorder, but real" feeling. https://phyphox.org/. - Source: Hacker News / almost 2 years ago

You can try Sonic Visualier [1] with Chordino plugin from the Vamp Plugin Pack [2]. It won't give you a full notation, but it can estimate chords from the audio recording. [1] https://sonicvisualiser.org/ [2] https://code.soundsoftware.ac.uk/projects/vamp-plugin-pack. - Source: Hacker News / 5 months ago

You may find it useful to look at existing software, such as Praat and Sonic Visualiser. Source: 11 months ago

2) there are a few spectrum analyzer software options to show you the notes being played. I use Sonic Visualizer myself. https://sonicvisualiser.org/. Source: over 1 year ago

You can use e.g. The Sonic Visualizer for picking out the pitches and durations. Source: almost 2 years ago

I haven't used it for this myself but I think Sonic Visualiser (https://sonicvisualiser.org/) might be able to tell you what notes are being played if you feed it a recording. Source: almost 2 years ago