Research

The NCVS does not conduct research that requires physical laboratories, human subjects, or animal care. Any basic or applied research that requires these physical resources is conducted by investigators at their primary institutions. NCVS does consolidate and disseminate research conducted by investigators anywhere in the world. According to our stated goals, the following research is ongoing:

Materials for Voice and Speech Educators

    • A tutorial on standing-wave pressures in the vocal tract has been produced (NCVS Reports No. 1).

Standards for Analysis and Simulation

    • Our voice and speech simulation software VoxInSilico is being converted from FORTRAN to PYTHON.
    • Documentation of VoxInSilico is being prepared for wide distribution to professional organizations Mathematical transformations between sound pressure and the perception of loudness have been published based on the ISO 226 standard.
    • The validity of inverse filtering has been tested when there is source-filter interaction.

Data Bases for Clinicians

    • The Iowa Head and Neck protocols have been linked to the NCVS website for information about clinical disorders.
    • The Iowa Vocal Academy has been linked to the NCVS website.
    • A monograph detailing the underlying physical and physiological principles of semi-occluded vocal tract (SOVT) exercises in is preparation.

Data Bases for Researchers

    • A data base for vocal fold contact areas under multiple modes of vibration has been produced.
    • A data base for intraglottal pressure distributions is under development.

Support of Other Organizations, Industry, and Individuals

    • Teaching materials are being upgraded in support of the Utah Center for Vocology, which conducts the Summer Vocology Institute.
    • Preliminary discussions about a new journal have occurred between NCVS with the Pan American Vocology Association.
    • Support was given to the 2021 International Conference on Voice Physiology and Biomechanics (ICVPB).