Speaker identification system using peak value envelop lines of vocal waveforms

摘要

Voice verfication of individuals is carried out by utilizing the peak value envelope of voice signals. The voice signal is separated into its positive and negative polarity portions and stepped peak value envelope waveforms are developed from each portion. The latter waveforms are quantized and normalized; the latter being carried out to provide waveforms having a total area therebelow which equals a predetermined area. The quantized, normalized envelopes are then compared with recorded envelopes which were previously calculated in the same manner as the former envelopes. Comparison is carried out by calculating the Hamming distance between the new and stored envelopes.