The Duration command computes the duration of an audio recording, in seconds, based on the number of samples, and the samples per second as stored in the attributes of audArray.

The audArray parameter must be a dense, rectangular, one or two dimensional Array, Vector, or Matrix with datatype=float[8],

$\mathrm{audiofile}≔\mathrm{cat}\left(\mathrm{kernelopts}\left(\mathrm{datadir}\right)\,''/audio/stereo.wav''\right)\:$

$\mathrm{with}\left(\mathrm{AudioTools}\right)\:$

$\mathrm{aud}≔\mathrm{Read}\left(\mathrm{audiofile}\right)$

$\mathrm{aud}≔\left[\begin{array}{cc}''Sample\; Rate''& 22050\\ ''File\; Format''& \mathrm{PCM}\\ ''File\; Bit\; Depth''& 8\\ ''Channels''& 2\\ ''Samples/Channel''& 19962\\ ''Duration''& 0.90531s\end{array}\right]$

$\mathrm{Duration}\left(\mathrm{aud}\right)$

$\frac{1109}{1225}$

$\mathrm{evalf}\left(\right)$

$0.9053061224$