嗨ngoc,
您可以使用
splMeter
从音频工具箱。
%的例子:计算信号的声压级
audFileName =“FunkyDrums-44p1-stereo-25secs.mp3”;
范围= timescope (“SampleRate”Fs,…
“TimeSpanSource”,“属性”,…
“YLimits”(110),“AxesScaling”,“汽车”,…
“ChannelNames”,…
{LAF的,“LAeq”,“LApeak”,“LAmax”});
sm = splMeter (“TimeWeighting”,“快”,…
“FrequencyWeighting”,“权重”,…
“SampleRate”Fs,…
“TimeInterval”2,…
“CalibrationFactor”1);
x = audioread (audFileName);
(LAF LAeq、LApeak LAmax] = sm (x (: 1));
范围((LAF LAeq、LApeak LAmax])
