hidebound
发表于 2025-3-26 22:34:34
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ABHOR
发表于 2025-3-27 03:25:42
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使苦恼
发表于 2025-3-27 06:24:55
Physical, Mechanical and Acoustical Properties of Cane for Reedsusicians for the reeds of clarinets, saxophones, oboes and bassoons. Australian cane growing in Adelaide region is also of good quality. Being a natural material, the cane exhibits very large variability in its physical, mechanical and acoustical properties. Cane is an anisotropic material, in which
官僚统治
发表于 2025-3-27 12:26:48
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Adornment
发表于 2025-3-27 16:49:56
Fibrous Auxiliary Materials—Felt, Cork, Paperboard for the pad’s sealing surface, maintaining an even tension on the skin of the pad. The pad cushion layer is made of multiple layers of felt. Felt is a soft fibrous network material. Felt is manufactured through pressing, matting and condensing different kinds of fibres-wool (Merino sheep, goat) or
MUMP
发表于 2025-3-27 21:41:09
Organic Auxiliary Materials—Leather and Parchmentng. Depending on the nature of the animal, calf, goat, sheep, kangaroo, etc, each skin has a characteristic feature. The tanning process induces chemical modifications of skin structure to achieve specific properties required by the type of product to be manufactured. Leather quality depends on anim
调整
发表于 2025-3-27 22:20:24
Resonant Air Column in Wind Instrumentsource of air, the sound generator, the resonating air column and the radiation of sound. If we make reference to how air column is excited by means of vibrating reed, the following classification of wind instruments can be proposed: mechanical reed instruments, lip valve instruments and air jet inst
FANG
发表于 2025-3-28 02:41:04
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CLEAR
发表于 2025-3-28 09:58:01
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键琴
发表于 2025-3-28 12:43:59
Methods for Measuring the Acoustic Properties of Wind Instrumentspends on temperature but is independent of frequency. Sound wave length is dependent on frequency. Under ambient conditions, radiation properties of wind instruments expressed by transfer function between internal acoustic pressure (inside the tube of the instrument) and the radiated field are relat