School of Speaking develops advanced software for the quantitative measurement of voice parameters such as jitter and shimmer. Our algorithms objectively map vocal cord pathologies, for the benefit of speech therapy and phonetic research in academic hospitals.
Objective measurement for speech therapy and phonetic research.
Integrated into the workflow of academic hospitals.
In the world of clinical phonetics, jitter and shimmer form the cornerstones of objective voice analysis. Jitter refers to the micro-variations in the fundamental frequency (Fo) of the voice, a measure of the cycle-to-cycle instability of vocal fold vibration.
Shimmer measures the same instability, but in the amplitude or loudness of the sound. Together, these parameters provide a quantitative, reproducible view of the neuromuscular control of the larynx, far beyond the human ear.
Our advanced spectrographic software isolates these parameters with clinical precision, enabling speech therapists and researchers in academic hospitals to monitor and diagnose pathologies such as vocal nodules, paralysis, or spasmodic dysphonia not only qualitatively but also quantitatively.
Next post: A deep-dive into how algorithms learn to recognize pathological patterns in spectrograms.
Our specialized spectrographic speech analysis software provides objective, quantitative insights for speech therapy and phonetic research in academic hospitals.
Advanced algorithms measure frequency instability (jitter) with clinical accuracy, essential for diagnosing vocal cord pathologies.
Objective measurement of amplitude instability (shimmer) for a complete picture of voice quality, supported by scientific research.
Detailed spectrographic visualizations that map the frequency spectrum for in-depth phonetic research and treatment evaluation.
Our software is used in academic hospitals and meets the highest standards for clinical diagnosis and speech therapy practice.
Quantitative voice parameters eliminate subjectivity and provide reproducible measurements for reliable treatment decisions.
Seamless integration into existing clinical workflows with export capabilities for research data and patient reporting.
Our advanced spectrographic analysis software provides objective measurement tools for speech therapists and phonetic researchers.
Quantitative measurement of frequency instability in the voice. Identifies micro-fluctuations indicating vocal fold pathologies for accurate clinical diagnosis.
Precise analysis of amplitude instability. Provides insight into the intensity variations of the voice, essential for mapping vocal fold dysfunctions.
Real-time display of the frequency spectrum in a clear, waveform blue diagram. Facilitates visual interpretation of complex speech data for researchers.
Generate standardized, objective reports with measurement values. Directly usable for file building and multidisciplinary discussion in academic hospitals.
Seamless connection with clinical audio recording systems. Ensures noise-free data input for the most reliable analysis results.
Track and compare voice parameters over time. Enables speech therapists to objectively monitor therapy progress or the development of a pathology.
Our spectrographic speech analysis software is used daily in academic hospitals and research institutions.
Average rating
"The objective measurement of jitter and shimmer has significantly improved our clinical diagnosis of vocal fold pathologies."
Dr. Eva de Vries
Clinical phonetician, UMC Amsterdam
Recommendation score
Among speech therapists
"Essential for our phonetic research. The quantitative parameters provide an exceptionally clear picture of voice instability."
Prof. Mark Jansen
Head of Research, Erasmus MC
Clinics
Active worldwide
"The spectrographic analysis is intuitive and reliable. It has become an indispensable tool in our practice."
Laura Meijer, MSc
Speech Therapist, St. Anna Hospital