Relation between Tension and Y-Axis value
조회 수: 1 (최근 30일)
이전 댓글 표시
Hi, there is a matematical relation beetween the tension of the output of a microphone read by matlab and the value on the y axis of matlab plot? if in y-axis of matlab i read 5, it means 5V of output of microphone? thanks Paolo
댓글 수: 0
답변 (2개)
Walter Roberson
2012년 10월 8일
There can be, but it depends upon how you are doing the reading of the data, and what device you are reading from. It is not uncommon that the readings would be normalized to [-1, +1) or [-1, +1], or to 0 meaning no signal and ((2^bits)-1) meaning maximum signal that the ADC is configured to measure.
Usually when you want to know this kind of information, you also need to know the microphone pressure to signal curve. Most often the best way to get that is to calibrate with a reference source.
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Spectral Measurements에 대해 자세히 알아보기
제품
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!