Edited By Albrecht Schneider and Arne von Ruschkowski
Robert Mores: Nasality in Musical Sounds – a few Intermediate Results
127 Robert Mores Nasality in Musical Sounds – a few Intermediate Results Introduction A recent meeting of reputated violin researchers and luthiers, held in Cambridge, led to this review. “Nasality” is one of the most frequently used and commonly understood terms if it comes to describe musical sounds. A recent study ranked this term among the top ten [Nyk09]. However, studies on perceived nasality in sounds often conclude without significant results, including those presented in Cambridge. A general under- standing of which acoustical properties in a sound would lead to perceived nasality is still missing, and automated measurements of nasal content in recorded musical sounds seem to remain unachievable. The violin research community still trusts the early definition of Dünnwald, who did a tremendous work in measuring more than 1000 violins and in defining four charac- teristic energy bands for violins. One of these bands he assigned the nasal band, and in the latest publication on this the band ranges from 700 Hz to 1600 Hz [Hei03]. In the strings community, these bands serve as reference today as well as the assigned ter- minology. However, the speech processing community has established other acoustical properties (APs) to capture nasality, and clinical research has also established its own perspective on nasality. This paper reviews these knowledge fields and relates the findings to musical sounds. The paper also covers some own studies on capturing nasality. Nasality in Speech Processing A brief look into history shows that after a period of fragmented research the...
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