問題詳情
41. If middle C (262 Hz) and C#(277 Hz) are played together, it would cause interference beats. Whatthe beat frequency would be if each is played one octave lower (each frequency reduced by afactor of 2)?
(A) 30 Hz
(B) 15 Hz
(C) 7.5 Hz
(D) 3.75 Hz
(E) None of the above.
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增