Phase delay device for ultra-small-size cardioid condenser microphone assembly, the microphone assembly using the phase delay device and method for assembling the microphone

摘要

The invention phase retarders unidirectional condenser miniature microphone assembly, using the same microphone assembly and the assembly method relates to, according to the present invention add a new series of stepped formation, and at the edge of a phase retarder, in through this, the assembly completes the assembly body is a phase delay, so as to be able to form by a predetermined gap phase delay, the phase delay body a non-sintered body of a conductive powder, also provision of the metallic material, can be induced to perform phase delay (attenuation) in a specific direction is required to own a normal sound wave. In the present invention, by changing the form of the phase retarder, the phase of the sound wave phase delay element of the delay mechanism, a mechanism using the phase delay to improve the gap from the mechanism using the air permeability of the sintered body of conductive powder and, through this, the phase delay By realization of the metallization material properly, the various problems caused when the release of the sintered body to take the form of phase delay in the producer side, for example, a problem to decrease the production efficiency of the phase retarder, the problem of the microphone unit price to rise, phase retarders the production yield easily solved problems such as degradation.