
The matched filter is the implementation used for this speaker verification system. The initial consideration for an implementation was to simply matched filter the input waveforms of two signals as opposed to certain characteristics of these waveforms. This implementation consisted of taking two input signals and cutting out the sections of the waveforms where speech existed (based on a visual determination). Then, one waveform was scaled to the length of the other, the two signals were normalized, and the dot product was computed. This implementation presents various, obvious problems. The most significant problem encountered is aligning the phase of the two input signals. This, it turns out, is a very difficult obstacle to overcome. As a result, this implementation was deemed impractical very quickly. The consideration of several other problems experienced in a speaker verification system led to the development of the final implementation.
LOSING  "If at first you don't succeed, failure may be your style." 

Sara MacAlpine JP Slavinsky Nipul Bharani Aamir Virani 