In-ear microphone and control circuit including in-ear microphone and speaker headset
A microphone and speaker technology, applied in transducer circuits, earpiece/headphone accessories, sensors, etc., can solve the problems of high manufacturing cost and complex structure, and achieve high signal-to-noise ratio, clear voice, and easy machine identification. Effect
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Embodiment 1
[0031] Embodiment 1: An in-ear microphone, comprising a sponge support cylinder pad 1, a support protection cylinder sleeve 2, an electret film 3, a sensing cover 4, a noise isolation cover 5, a body 6, a loudspeaker 7 and an incoming voice signal Line 7a, rear end cover 8, field effect tube 9, outgoing voice signal line 10, polyester film sleeve 11, the front section of the fuselage 6 is the ear section 6d, the middle section is the transition section 6e, and the rear section is the cabin section 6f, There is a sound hole 6c in the center of the ear section 6 and the transition section 6e, and the outer wall of the transition section 6e has a noise isolation cover 5; the inner cavity of the rear section 6f of the fuselage 6 is fastened with the inner cavity of the rear end cover 8 to form the assembly compartment of the speaker 7, Its in-ear microphone is an electret condenser bone conduction microphone, and the electret film 3 is cylindrical and assembled on the outer wall of...
Embodiment 2
[0032] Embodiment 2: another kind of in-ear microphone, specifically, there is a cylindrical electret film 3 on the outer wall of the ear section 6d of the fuselage 6, and the inner side of the electret film 3 is covered with a conductive layer, and the electret film 3 The outer wall of the sponge support cylinder pad 1 is provided with a polyester film sleeve 11 on the outer wall of the sponge support cylinder pad 1. The outer wall of the polyester membrane sleeve 11 is covered with a conductive layer, and the outer wall of the conductive layer of the polyester membrane sleeve 11 has a support protection sleeve 2. The outer wall of the support protection sleeve 2 has a sensing cover 4; the support protection sleeve 2 is made of 206# stainless steel with nickel-plated surface, and the wall of the support protection sleeve 2 has a hollow groove 2a, and the support protection sleeve 2 and The conductive layer of the outer wall of the polyester film sleeve 11 keeps in good contact...
Embodiment 3
[0033] Embodiment 3: The loudspeaker 7 is a moving iron horn.
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