Obstruent Obstruent An obstruent is a speech sound such as , , or that is formed by "obstructing" airflow. Obstruents contrast with sonorants, which have no such obstruction and so resonate. All obstruents are consonants, but sonorants include both vowels and consonants. Obstruents are subdivided into plosives (oral stops), such as , with complete occlusion of the vocal tract, often followed by a release burst; fricatives, such as , with limited closure, not stopping airflow but making it turbulent; and affricates, which begin with complete occlusion but then release into a fricative-like release, such as . Obstruents are prototypically voiceless, but
Grammy Award for Best Hard Rock/Metal Performance Vocal or Instrumental Grammy Award for Best Hard Rock/Metal Performance Vocal or Instrumental The Grammy Award for Best Hard Rock/Metal Performance Vocal or Instrumental was an award presented at the 31st Grammy Awards in 1989 to honor quality hard rock/metal works (albums or songs). The Grammy Awards, an annual ceremony that was established in 1958 and originally called the Gramophone Awards, are presented by the National Academy of Recording Arts and Sciences of the United States to "honor artistic achievement, technical proficiency and overall excellence in the recording industry, without regard to album sales or chart position." The Academy recognized hard rock music