She initially pursued special education for teaching young children with learning and emotional difficulties, which led her to complete a Master of Arts degree from the University of Colorado Boulder in 1986[1] in speech pathology and speech and voice therapy.[2] She studied under Lorraine Ramig and interned with Robert Sataloff.[3]
In 2000, while Perez had private clinic, a transgender woman asked her for help making her voice more feminine. Perez developed a voice feminization training system,[4][5] and founded the company Exceptional Voice.[6] In 2009 Perez extended her work to develop the EvaM app for trans men.[7] In 2013, Perez and Annika Kappenstein co-created the Exceptional Voice App (Eva app), with a second version released in 2015.[8][9][10] The Eva and EvaM apps combine videos and exercises with real-time feedback to guide the voice training activities,[11] and they have been reviewed by the scientific literature.[7]
Perez, Kathe S.; Ramig, Lorraine Olson; Smith, Marshall E.; Dromey, Christopher (January 1996). "The Parkinson larynx: Tremor and videostroboscopic findings". Journal of Voice. 10 (4): 354–361. doi:10.1016/S0892-1997(96)80027-0.
Perez, Kathe; Lynn, Skinner (2000), Vocal versatility in your business the basics, Lakewood, CO: Vocal Versatility Productions, ISBN0-9705402-0-5, OCLC47890225
^ abAhmed, Alex A; Kim, Levin; Hoffmann, Anna L (2022-04-11). "'This app can help you change your voice': Authenticity and authority in mobile applications for transgender voice training". Convergence. doi:10.1177/13548565221079459. ISSN1354-8565.