For sure it is possible, but the question is how? Official docs on http://gnu.org/software/octave keeps quiet about that.
Are there any additional libraries or functions that I can use to get access to line input (microphone input) using GNU/Octave on Linux?
Did you try using Octave's record
function?
x = record(T, Fs);
where T
is the time duration to record, and Fs
is the sampling rate.