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CN111954127A
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360-degree all-dimensional full-frequency loudspeaker and vibrating diaphragm thereof
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CN111951764A
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Ruan with annular integral sound beam
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CN111951748A
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Sound board with sound beam and sound tunnel in grand piano
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CN111951752A
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Erhu with diaphragm provided with annular integral sound beam
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CN111951765A
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Dulcimer with annular integral sound beam
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CN111954138A
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Full-band silicon wheat with sound beam and sound tunnel
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CN111954141A
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Full-band high-tone-quality hearing aid with sound beam and sound tunnel
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CN111954135A
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Full-band high-tone-quality electronic product loudspeaker with sound beam and sound tunnel
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CN111954133A
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Full-band high-tone-quality loudspeaker with sound beam and sound tunnel
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CN111951763A
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Full-band high-tone-quality Ruan with sound beam and sound tunnel
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CN111954124A
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Full-band high-tone-quality planar resonant speaker with sound beam and sound tunnel
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CN111954136A
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Full-band high-tone bowl-shaped loudspeaker with sound beam and sound tunnel
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CN111954139A
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Full-frequency-band silicon wheat with groined-shaped sound beam
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CN111951766A
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Full-frequency-band high-tone-quality dulcimer with sound beam and sound tunnel
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CN111951753A
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Urheen with skin membrane provided with sound beam and sound tunnel
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CN111951749A
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Soundboard with sound beam and sound tunnel in upright piano
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CN111954134A
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Full-band high-tone-quality thin loudspeaker with sound beam and sound tunnel
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CN111951758A
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Double-sound beam ancient lyre
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CN111951756A
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Double-sound beam ten-string musical instrument
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CN111951759A
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Double-sound beam Japanese zither
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