cymbal-bow-v1: signal scale from the first solution
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11 # cymbal-bow-v1: bowed bronze disk struck with a drum stick, geometrically nonlinear
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3-Draft: this specification is under discussion and has no solutions yet; the signal scale is not fixed.
3+Draft: this specification is under discussion; its first solutions are being produced and the scale was fixed from them.
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55 This is the second challenge of the cymbal tier. It is [cymbal-flat-disk-v1](../cymbal-flat-disk-v1/README.md) with one change: the disk is no longer flat. Its mid-surface is a shallow paraboloid rising 25 mm from the rim to the center, the bow of a cymbal without its bell, and the thickness is uniform along the normal. Material, damping, strike, listener, output format and error measures are unchanged, so the difference between the two challenges is the effect of curvature alone. Curvature couples stretching and bending already in the linear regime, which raises the low modes and changes their radiation, and it adds quadratic terms to the nonlinearity, so the pitch glide and the cascade of the flat disk take a different form. The deliverable is again six seconds of pressure at the listener from the surface acceleration.
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