HNR Calculator (Harmonics-to-Noise Ratio)
The Harmonics-to-Noise Ratio (HNR) expresses, in decibels, the ratio between the harmonic (periodic) energy and the noise (aperiodic) energy in a voice signal. Higher HNR indicates a clearer, more periodic voice; lower HNR is associated with breathiness and increased turbulent noise.
Open the HNR Calculator →How to measure HNR with Vocametrix
Record or upload a sustained vowel and the tool returns the HNR value automatically. Export it to track vocal clarity across sessions.
Frequently asked questions
What does a higher HNR mean?
A higher HNR reflects a more periodic, clearer voice, while a lower HNR is associated with breathiness and added noise.
Do I need Praat for HNR?
No. Vocametrix calculates HNR online without any Praat installation or scripting.