Table Of Contents
Latest update [menu]
Fixed scaling and a few other bugs. Added a banner ad, updated privacy policy and a few other modifications to bring app up to date.
Description [menu]
Measure the Harmonic to Noise Ratio (Harmonicity) from your microphone.
Harmonicity is a measure of the sound energy in the harmonics relative to the rest of the spectrum.
Harmocity varies with age, gender & which vowel you pronounce. Higher harmonicity values indicate a purer sound. Whilst lower jitter and shimmer values indicate a purer sound.
This meter is supposed to be used with a continuous consistent sound, e.g. Pronoucing a vowel, or a tone from a speaker/instrument. Rapidly changing tone/sound will give nonsensical output.
FOR INDICATION ONLY. Harmonicity will vary depending on how close the source is to the microphone. Microphone sensitivity varies with frequency and from device to device. Even amoungst scientific literature, it is difficult to find consistency in absolute reported values.
Jitter is a measure of the frequency variation of the sound. The relative jitter is shown as a %.
Shimmer is a measure of the amplitude variation of the sound. The relative shimmer is shown as a %.
Autodetects sound - App will only start measuring when a sound is detected.
Averaging - After 0.7s, the app will start averaging the Harmonicity, Jitter, Shimmer and freqency values. This will continue until the sound is stopped at which point the last 0.7s of data is removed from the averaged values.
Musical Note - The current detected frequency is converted into a note based on western 12 tone equal temperament. Use to tune your guitar or other instrument if you wish.
Pause button - Useful if in a noisy environment and measurement doesn't auto stop.
FFT Spectrum - Autoscaling Sound Intensity between 0 and 2 kHz.
Range: 100 Hz to 2 kHz fundamental harmonic frequency detection.
Technical bit:
The fast fourier transform (size 8192) is performed on the last 0.74s of data to produce a frequency spectrum (0 to 5.5 kHz with 1.35Hz resolution). This frequency spectrum is windowed between 100 and 4 kHz with linear fall offs to zero at 50 and 5 kHz. The fundamental frequency is determined from polynomial fitting to peaks. The harmonic energy is determined from the sum of the FFT signal at the harmonic freuquency plus 8 Hz either side. The noise is the sum of the rest of the FFT. The ratio of harmonic to noise energy is the Harmoicity and is displayed in decibels.
More technical details can be found on the website.
How to install Harmonicity Meter APK for Android [menu]
Download Harmonicity Meter APK file (com.keuwl.harmonicitymeter_7_3575148.zip) from SameAPK.com, then follow these steps:
Update Phone Settings
- Go to your phone Settings page
- Tap Security or Applications (varies with device)
- Check the Unknown Sources box
- Confirm with OK
Go to Downloads
- Open Downloads on your device by going to My Files or Files
- Download Split APKs Installer (SAI)
- Download and unzip file you already downloaded (com.keuwl.harmonicitymeter_7_3575148.zip)
- Open Split APKs Installer and follow steps on this app.
- Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install Harmonicity Meter APK on Windows 7/8/10 or MAC PC? [menu]
Download Harmonicity Meter APK file(com.keuwl.harmonicitymeter_7_3575148.zip) from SameAPK.com to your PC (ex: /Users/xxx/Downloads/(com.keuwl.harmonicitymeter_7_3575148.zip)), then follow these steps:
Using Emulator:
- Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
- Download and unzip file com.keuwl.harmonicitymeter_7_3575148.zip.
- Using ADB or Split APKs Installer same as install for Android.
Harmonicity Meter APK Pros & Cons [menu]
Pros
- This app is safe, it's not require high risk permissions
- Compatible with 32 bit device (most Emulator using 32bit arch CPU)
- Compatible with 64-bit device (some android device and current Bluestacks)
Cons
Everything is good.
