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Pandemic Spurs SLU Music Professor to Develop VocalEase Mask

Vocalists sported a new mask at Saint Louis University鈥檚 Mastersingers' Tuesday, Dec. 7, at St. Francis Xavier College Church. The mask is the brainchild of a SLU assistant professor and is taking the market by storm. 

As a professional singer and voice professor, Stephanie Tennill (A&S 鈥�99), observed a critical problem for singers and speakers that seemed to go neglected at the start of the pandemic 鈥� the lack of a mask to help prevent the spread of COVID-19 that also provided the clarity, comfort and protection vocal performers need. To meet this need, she created , an acoustically transparent mask for speech and singing. With the help of SLU鈥檚 Research Innovation Group, Tennill鈥檚 solution is now a reality, with masks being sold commercially. 

鈥淲e are excited to offer a mask that not only allows singers and speakers to reclaim the beauty of full vocal relationship and good vocal health, but to do so with a high level of aerosol protection,鈥� said Tennill, assistant professor of music in the Department of Visual and Performing Arts. 

鈥淐OVID took our voices away, and now is the time to take them back!鈥� 

Stephanie Tennill 

Vocal communities spanning from amateurs to elite professionals no longer have to choose between safety and sound, Tennill said.

Tennill worked with Andrew Hall, D.Sc., associate professor of biomedical engineering and director of SLU鈥檚 Center for Additive Manufacturing as well as professional costume designer, Noelle Wagner. She also collaborated with Anne K. Miller, director of research commercialization of SLU鈥檚 Research Innovation Group, and other colleagues to develop the mask and apply for a patent assigned to SLU. 

Hall became involved after he developed an N-95 mask alternative for hospital use and said he was familiar with mask design, testing requirements, and methodologies. Hall used special equipment called PortaCount庐 to test the aerosol particle filtration of the masks as well as their fit and function. 

鈥淚n preliminary filtration testing, the VocalEase Mask achieved between 62-67% filtration levels when testing in the aerosol particle range of 0.2 渭m-1.0 渭m, the most vulnerable range for filtration,鈥� Tennill said. 鈥淭his is well above the Level 2 performance standard as put forth by American Society for Testing and Materials for barrier face coverings, and above most day-to-day wear masks as well as current singing masks on the market.鈥�

Several of Tennill鈥檚 students, like London Kimble, tested the masks and provided valuable feedback. Kimble is a sophomore at SLU majoring in Theatre and Communication while minoring in Music and Dance. She has performed in theatrical productions at SLU and acts professionally through Talent Plus. She said regular cotton masks have multiple downsides for vocalists and presenters.

 

鈥淢asks cut off your oxygen supply making it difficult to breathe deeply. We start yelling so we don't sound muffled, which induces vocal fatigue and straining,鈥� Kimble said. 鈥淲e also have a limited range in motion while singing or speaking wearing a mask, which can cause tension in our jaws and the base of our tongues.鈥�

Kimble said the VocalEase Mask allows you a full range of motion and breath support, almost as if you weren't wearing a mask at all. 

These sentiments were shared by professional mezzo opera singer .

In fact, interest in the product skyrocketed after Sorenson raved about the mask鈥檚 performance in a viral . Tennill had previously provided Sorenson and other principals with masks to wear during indoor rehearsals while in town for a performance of 鈥淟es contes d鈥橦offmann鈥� at Union Avenue Opera this summer. 

VocalEase Gives Back 

Tennill approaches VocalEase with the mindset of a social entrepreneur.

鈥淚 didn鈥檛 start this project to build a company but to solve a problem,鈥� said Tennill. 

As CEO, she says the company prides itself on its positive social impact accomplished through its partnerships. Masks are manufactured with , a local nonprofit cut and sew manufacturer that provides economic empowerment to vulnerable refugee and immigrant women by teaching them new skills and offering them living wage jobs. To support its packaging and fulfillment needs, the company works with, which provides employment for developmentally disabled adults. 

A portion of proceeds from each mask sold benefits the nonprofit , which is based in New York, where Tennill attended grad school and worked professionally before relocating home to St. Louis after accepting her current position at SLU. The company also donates masks at no cost to vocal programs and arts initiatives in under-resourced communities.

鈥淔or every 100 masks manufactured, we continue to allocate approximately 10 to be donated,鈥� Tennill said. 鈥淲e have already donated several hundred masks and look forward to continuing to supply them at no cost to vibrant vocal communities in need.鈥�

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About Saint Louis University

Founded in 1818, Saint Louis University is one of the nation鈥檚 oldest and most prestigious Catholic institutions. Rooted in Jesuit values and its pioneering history as the first university west of the Mississippi River, SLU offers nearly 13,000 students a rigorous, transformative education of the whole person. At the core of the University鈥檚 diverse community of scholars is SLU鈥檚 service-focused mission, which challenges and prepares students to make the world a better, more just place.