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ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ

รหัส / code คำอธิบาย / code name Version
H04R0001280000 Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means 1
H04R0001300000 Combinations of transducers with horns, e.g. with mechanical matching means 1
H04R0001320000 for obtaining desired directional characteristic only 1
H04R0001340000 by using a single transducer with sound reflecting, diffracting, directing or guiding means 1
H04R0001360000 by using a single aperture of dimensions not greater than the shortest operating wavelength 1
H04R0001380000 in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone 1
H04R0001400000 by combining a number of identical transducers 1
H04R0001420000 Combinations of transducers with fluid-pressure or other non-electrical amplifying means 1
H04R0001440000 Special adaptations for subaqueous use, e.g. for hydrophone 1
H04R0001460000 Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope (throat mountings H04R0001140000) 1
H04R0003000000 Circuits for transducers (arrangements for producing a reverberation or echo sound G10K0015080000; amplifiers H03F) 1
H04R0003020000 for preventing acoustic reaction 1
H04R0003040000 for correcting frequency response 1
H04R0003060000 of electrostatic transducers 1
H04R0003080000 of electromagnetic transducers 1
จำนวนรหัสข้อมูล 15 จาก 73902