The Influence of Transmission Channel on the Admissibility of Speech Sample for Forensic Speaker Identification
This paper is an extension and addition to the previously published and presented during AES 39th conference and AES 129th Convention papers, regarding speech samples quality requirements and compensation for the influence of transmission channels [1, 2] in terms of forensic and automatic speaker identification. In this paper we provide the analysis of different types of transmission and recording channels such as land line, GSM, radio, digital voice recorder and microphone. We analyze the important parameters of voice samples obtained from these channels and compare the influence of different channels on important for speaker identification voice biometric features. At the end of the paper, there are some conclusions provided regarding the circumstances under which the particular recording can be accepted / rejected for forensic speaker identification.
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