I want to use pattern match for voice recognition. ( I attach the effect of the time domain signal).How can I analyze the amplitude from the time domain signal ?I try to use the waveform to xy pair.vi ,but it turn out give me a array of cluster that contain time stamp and double numeric that change between possitive and negative. I can not get any information from it. Can anyone help me? Kudos will bie given if the idea is good. Really thanks!