Audio Frequency Counter

keuwlsoft

Contains ads

About this app

Frequency counter based on the microphone input. Counts when the input rises or falls past a set level and converts into into frequency or a time period. FOR INDICATION ONLY. Results depend on your device and its hardware. If you just want to know the frequency of a sound with harmonics (e.g. mucial instrument), a FFT based app such as keuwlsofts spectrum analyser or guitar tuner (both free) will be better. This app can provide more accurate frequency measurement for single frequency input signals. Features include:

Display of triggered event count and frequency or time period.
Graph of input signal, 2.5 ms/div up to 640 ms/div.
Gate time of 0.1s, 1s, 10s or 100s.
Gain from x1 to x1000.
Trigger on rise or fall.
AC or DC coupling.
Set a noise level so new event is not triggered until the signal has first passed this level.

More details can be found on the website.

Ratings and reviews

Does what it says, for whatever you could use an app that counts waveforns over a certain amplitude (with a noise floor adjustment) on. However, unfortunately on my current device, an LG G6, it seems a bit glitchy. This is the first app from this dev I've had problems with. Although this phone has been problematic lately. So the 2 stars lost could be my device and not the app, but that is my experience. And its not enough for me to uninstall practically all the other apps of this dev I have!

Amazingly accurate (better than 2 decimal places on pure tones, & usually better than 1 decimal place on CD tracks - varies with CD player), but performance (particularly below 200Hz) varies with phone hardware - on my oldish Motorola it displays waveforms, but only gives a reading between 200Hz & 6kHz, after which it freezes. On a newer IMO it reads from 80Hz to 20kHz, but keeps closing down after about 6kHz, which is quite frustrating. NB: As developer indicates, only works with pure tones.

This app is perfect. Frequencies are accurate. For those of us who are using frequencies for meditation and healing, use this App to test false frequencies. It's helped me a whole lot. BTW, when it says "contains ads", it means a tiny box at the top of the screen that you'll hardly ever notice

What's new

Updated to use newer code methods to better target and run reliably on devices in 2024. You can now select between audio source (default, mic or unprocessed) in the settings.