VASC

Dept. of ORL-HNS, Kyoto University | Tools

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VASC

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Updated on
2025-07-02 00:00:00

About VASC

Speech analysis software that quantifies and visualizes the quality of human speech using indices that focus on noise components and harmonic energy (overtone) components.

Voice Analyzer with Super Cross Technology
A speech analysis application for evaluating speech quality. Harmonics to noise ratio (HNR) and harmonics to fundamental ratio (HFR) of speech using a proprietary high-performance zero-cross point detection algorithm is calculated and visualized.
We have released two modes: a mode that continuously plots two indexes related to noise and overtones on a two-dimensional coordinate axis, and a graph display of time-series changes in voice pitch and harmonic energy.
In a quiet environment, the fundamental frequency can also be calculated with high accuracy. Please use it for voice training and singing training.

Developer Info

DeveloperDept. of ORL-HNS, Kyoto University
Email[email protected]
Website https://ent.kuhp.kyoto-u.ac.jp
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