Small singing bowls can train singers’ voice projection via formant components

Evidence

The amplitude of the singing bowl dies away gently from the strike onward; it does not have the growth in energy exhibited by the Indian temple bell. Its components appear to be essentially harmonically related to each other; the resulting sound is soothing and used in temple rites and for meditation. Singing bowls are made in different sizes, and some of the smaller ones are used in singing training because they exhibit strong components in the singer’s formant cluster region, which can be used to encourage voice projection. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1319

Categorization

• XREF: Ties to the reader’s interest in practical listening/voice work and to psychoacoustic formant research; smaller bowls resonate in the singer’s formant cluster.
• QUESTION: Which formant cluster frequencies do these small bowls actually cover, and could this be a legitimate vocal-training tool?
• corroborated: 2 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1319