A Full Frequency Masking Vocoder for Legal Eavesdropping Conversation Recording
Sound
2018-01-24 v1 Audio and Speech Processing
Abstract
This paper presents a new approach for a vocoder design based on full frequency masking by octaves in addition to a technique for spectral filling via beta probability distribution. Some psycho-acoustic characteristics of human hearing - inaudibility masking in frequency and phase - are used as a basis for the proposed algorithm. The results confirm that this technique may be useful to save bandwidth in applications requiring intelligibility. It is recommended for the legal eavesdropping of long voice conversations.
Cite
@article{arxiv.1502.03387,
title = {A Full Frequency Masking Vocoder for Legal Eavesdropping Conversation Recording},
author = {R. F. B. Sotero Filho and H. M. de Oliveira and R. M. Campello de Souza},
journal= {arXiv preprint arXiv:1502.03387},
year = {2018}
}
Comments
7 pages, 3 figures, 3 tables, XXXV Cong. Nac. de Matematica Aplicada e Computacional, Natal, RN, Brazil 2014