In a message dated 11/6/00 12:00:17 AM Central Standard Time, RALUCOB@a... writes:
<< randy,
a high larynx occurs during swallowing so, it is not a high larynx that creates excessive medial compression nor does it put excessive strain on the folds. it would be the application of breath pressure in the effort to create sound that creates these problems.
not all literature agrees that a high larynx position should be mentioned under misuse. jo estill's research indicates that a high larynx is required for certain types of singing and maintains that it is safe if done correctly. >>
It is the high laryngeal position that causes excessive adduction. When the suprahyoid groups become involved, the folds excessively valve. When one adds airflow to this condition in order to create voice excessive subglottal pressure is created in an attempt to overcome the hyperadduction. As far as Estill goes, she's a nut job in my eyes who attempts to examine faulty methods which are potentially dangerous (high larynx) and explain them as a technique.
One book I can refer you to is Understanding Voice Problems, A Physiological Perspective for Diagnosis and Treatment. The vast majority of the pedagogical texts I've read, that talk about non-classical singing, take this stand on laryngeal position, as does the otolaryngologist I work with a lot on voice disordered patients (Dr. Robert Bastian).
I do know that Lisa Popeil (spelling?) wrote an article in NATS JOS using a videoflueroscopic exam to investigate her different styles of singing (classical and pop). She theorized a higher laryngeal position would be found in pop, as it was, along with a retracted tongue and other telltale signs of tension. She was rather disappointed in her findings.
Randy Buescher Speech Level Singing Instructor Speech Language Pathology Graduate Student (almost done ... finally!)
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