The throat device comprises a substantially straight body member having {TAIL ~ one end} to be coupled with the horn, and at least two curved branch members coupled with the other end of said body member such that {HEAD ~ no phase interference} occurs in a high frequency sound range 
The throat device comprises a substantially straight body member having { TAIL ~ one end } to be coupled with the horn , and at least two curved branch members coupled with the other end of said body member such that { HEAD ~ no phase interference } occurs in a high frequency sound range
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