中等ICT-MULT-014
An audio file is described as 128 kbps. In this course that figure means:
A. About 128 kilobits of audio data are used for each second of playback.✓ 答案
B. The picture is 128 pixels wide.
C. The sampling rate is 128 hertz and no data rate is involved.
D. The clip uses 128 speakers.
解說
Bit rate is data per second. It is not the width of an image and it is not the number of speakers.