I just created an Audio Spectrum Analyser app and it’s proved very popular. Turn your Android device into an audio spectrum analysis tool and break into safes – um, please don’t use it for that 😉 The app uses a Fast Fourier Transform (FFT) algorithm to analyse sound and has some features not found in similar apps (such as exporting audio snapshot data). Check it out!
For those interested in helping me correct or add more translations, see the github repo here.
There are many uses for spectrum analyzers, such as:
• Assessing environmental noise for health and safety
• Sound checking speaker setups, PA systems and in-car stereos
• Identifying audio signals obscured to the human ear by noise
• Testing the microphone on your device
• Comparing the quality of different brands of headphones
• Testing signal generators
• Tuning musical instruments
• Measuring audio signals just outside human perception. As people age over 20 years, their aural perception range drops well below 21 kHz
Speccy has also been used to find gas leaks and even hunt ghosts, apparently!
A few more useful articles about spectrum analyzers:
I’ll add more references and examples when I can.