Narrow directional microphone

A directional microphone comprising a microphone unit having a forward sound terminal and a rearward sound terminal spaced from said forward sound terminal;

• an elongated cylindrical interference pipe accommodating said microphone unit wholly within a rear end portion thereof for cooperating with said microphone unit to effect a narrow directional sound orientation of said microphone;
• an inner peripheral surface of said interference pipe being larger than an outer peripheral surface of said microphone unit to form a gap therebetween, a plurality of sound inlets circumferentially spaced on said interference pipe directly over said rearward sound terminal for direct transmission of sound waves to said rearward sound terminal;
• and
• a plurality of first openings axially spaced on said interference pipe, said openings comprising a first series of axially spaced openings and a second series of axially spaced openings positioned approximately 180.degree. opposite said first series of openings on said interference pipe.

A directional microphone comprising a grip, a hollow elongated interference pipe open at a distal end and secured to said grip at a grip end, a circular microphone unit wholly within a rear portion of said interference pipe and having a forward sound terminal and a rearward sound terminal spaced from each of said forward sound terminal and said grip end;

• an area of reduced diameter at an end portion of said grip, said grip end of said interference pipe affixed to said grip over said area of reduced diameter, a gap defined by said interference pipe and said microphone unit;
• a plurality of sound inlets circumferentially spaced on said rear portion of said interference pipe, each of said inlets directly over said rearward sound terminal for direct transmission of sound waves to said rearward sound terminal, said inlets covered with a non-woven textile;
• two rows of first openings spaced axially on said interference pipe, one of said rows 180.degree. opposite the other of said rows on said interference pipe, each of said openings covered with a material for sound resistance;
• a third row of openings positioned on said interference pipe 90.degree. from one of said rows of first openings, each opening in said third row being elongated and covered with a second resistance material;
• and
• thereby resulting in a directional microphone having superior directional characteristics with lower wind noise and proximity effect.