| 摘要 |
A drumhead adapted for mounting on a musicians drum comprising a compound drumhead membrane of durable flexible stretch-resistant material having a center portion of predetermined thickness in an outer portion having a greater thickness than said center portion which provides an inexpensive way of producing a desirable large momentary increase in the pitch of a drum when the drum is struck a sharp blow with a drum stick and at the same time effecting a significant decrease in the decay time of the fundamental tone of the drum.
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