Short Courses & Events / Archive

The Transient Theory of Human Voice Production with Dr Julian Chen

Sunday 16th April 2023, 5:00 PM - 7:00 PM (London Time)

This event is free-to-attend as part of our World Voice Day celebrations.

In 1957, French physiologist Philippe Fabre invented the electroglottograph, which can accurately determine the closing and opening instants of the glottis in vivo. In 1984, Donald Miller and Harm Schutte further placed two pressure sensors immediately above and below the glottis, measured the air pressures across the glottis.

This experimental evidence enabled a scientific understanding of human voice production.

And so a refined version of the transient theory of human voice production, the timbron theory, initially proposed by Leonhard Euler in 1727, is established. In this lecture, experimental output and the timbron theory of human voice production are presented in an easy to understand graphical format.

Content:

According to that theory, the time between two adjacent glottal closing instants accurately defines the pitch period, and the sound waveform in each pitch period contains full information on the timbre. A method of extracting glottal closing instants from sound waves and a graphical display, the pitch-synchronous spectrogram, are presented.

Among the samples of human voice, the sound recordings of Luciano Pavarotti are analyzed. Some characteristics of the master singer are shown, and hints of how to improve the quality and volume of voice are presented.

Finally, the theory and parametrization method for human voice developed in early 20th century, the source-filter theory and linear prediction coefficients (LPC), are outlined.

Comparing with the more accurate timbron theory and pitch-synchronous parametrization method, the deficiencies of the source-filter theory and the LPC method are discussed.

 

Dr Julian Chen

Julian Chen received a PhD in Physics from Columbia University in 1985, then joined IBM Research Division as a Research Staff Member...

World Voice Day

World Voice Day takes place on 16th April annually. It is acknowledged across the globe, with the main goal being to increase awareness of voice and voice issues.

Sorry, this is an archived short course...

We have plenty of upcoming short courses coming soon. See details of some of them below or look at the full list of short courses.

Comparative Vocal Styles: Classical, Belting, Pop, R&B, Country, Rock & Jazz
Tuesday 5th March 2024
5:00 PM - 7:00 PM
(London Time)

Comparative Vocal Styles: Classical, Belting, Pop, R&B, Country, Rock & Jazz

Lisa Popeil

In this interactive workshop, participants will have the opportunity to experiment with some of the many elements which comprise different genres, including Classical, Musical Theatre Belting (including its five substyles), Pop, R&B (Soul), Country, Rock and Jazz.

What Every Singing Teacher Should Know About Vocal Health: Fact-finding and Myth-busting (2-part course)
Thursday 7th March 2024
5:00 PM - 7:00 PM
(London Time)

What Every Singing Teacher Should Know About Vocal Health: Fact-finding and Myth-busting (2-part course)

Leda Scearce

This workshop will cover a number of topics related to vocal health education, including vocal hygiene, medical factors and the voice, optimising efficiency of the speaking voice, vocal pacing, the singer's role in identification of dysphonia and making appropriate referrals to the vocal health team, and common vocal health myths and how to dispel them.

Queering Vocal Pedagogy: Affirming Trans and Genderqueer Singers
Thursday 14th March 2024
5:00 PM - 7:00 PM
(London Time)

Queering Vocal Pedagogy: Affirming Trans and Genderqueer Singers

Dr William Sauerland

Rooted in a multi-case research project, this session explores the experiences of transgender and genderqueer singers in private voice instruction. Through the lenses of six singers, including a teenage transgender woman...