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"Silver Plated", according to Bach: 351 1.5C Trumpet Mouthpiece - Silver Plated 71.20.250.51 05:56, 4 March 2014 (UTC) —(Also available in Gold-plate:) Could be that the silver plate is wearing through, beginning to show the brass underneath - assuming you clean regularly with a brush or whatever.
Cross-section of the mouthpiece of a recorder, indicating a block (A), duct (B), and edge (C) The accompanying illustration of the mouthpiece of a recorder shows a wooden block (A) with a channel carved into the body of the instrument (B), together forming a duct that directs a ribbon of air across an opening toward a sharp edge (C).
There are several types of gold plating used in the electronics industry: [3] Soft, pure gold plating is used in the semiconductor industry. The gold layer is easily soldered and wire bonded. Its Knoop hardness ranges between 60 and 85. The plating baths have to be kept free of contamination. Soft, pure gold is deposited from special electrolytes.
Silver plating is common on all brass mouthpieces because it is cost-effective and good in terms of tone quality. It is also moderately germicidal. Silver plating is not as comfortable [citation needed] or as expensive as gold, but has properties and qualities that some feel facilitate certain styles of playing [dubious – discuss].
The Deluxe is also available with a gold-plated mouthpiece and coverplates, known as the Super Chromonica Gold. [9] The Educator 10 is a 10-hole, 40-reed chromatic harmonica built on a plastic comb. It is designed without the valve or windsaver technology found in many other chromatics, and because of its ten holes, it is smaller than most ...
It uses a slight rolling in of both lips and touching evenly all the way across. It also uses mouthpiece placement of about 40–50% top lip and 50–60% lower lip. The teeth will be about 1 ⁄ 4 to 1 ⁄ 2 inch (6 to 13 mm) apart and the teeth are parallel or the jaw slightly forward. There is relative mouthpiece pressure to the given air column.
Slide whistle Diagram of a slide whistle. Sections: 1: mouthpiece, 2: fipple, 3: resonant cavity, 4: slide, 5: pull rod, 6: pipe. A slide whistle (variously known as a swanee or swannee whistle, lotus flute, [1] piston flute, or jazz flute) is a wind instrument consisting of a fipple like a recorder's and a tube with a piston in it.
The end-blown flute (also called an edge-blown flute or rim-blown flute) is a woodwind instrument played by directing an airstream against the sharp edge of the upper end of a tube. Unlike a recorder or tin whistle , there is not a ducted flue voicing, also known as a fipple .