Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sound Patterns (1961) is a musical piece or composition for a cappella mixed chorus by Pauline Oliveros. Oliveros won the Gaudeamus International Composers Award in 1962 with this work. Rather than a traditional text, the work is constructed of phonetic sounds chosen on the basis of their timbre. The piece is entirely notated, lasts about four minutes, and features an exposition (measures 1-12), development (12-46), and recapitulation (47-59). White noise is created vocally through the initial consonant "sh" and variations such as s, z, wh, p, t, h, ct, d, ch, th, k, and sw. Ring modulation is imitated through rapidly changing the vowel content, percussive envelopes through "lip pops," "tongue clicks," "snap fingers," and "flutter lips", and filtering through muting such as by covering the mouth with one's hand, sounding the consonant "M" through tightly closed lips, or singing through clenched teeth.

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