Automatic detection of disturbing robot voice- and ping pong-effects in GSM transmitted speech

Martin Paping, Thomas Fahnle
1997 5th European Conference on Speech Communication and Technology (Eurospeech 1997)   unpublished
This contribution reports about a method to automatically detect the disturbing Robot Voice and Ping Pong e ect which occur in GSM transmitted speech. Both e ects are caused by the frame substitution technique, recommended by the GSM standard: in these cases the transmitted speech m a y be modulated by a disturbing 50 Hz component. These modulations can be detected very easily in the frequency domain. By a framewise comparision of the modulation amplitude of an undisturbed clean speech signal
more » ... th a test signal it is possible to locate the occurrence of Robot Voice and Ping Pong very precisely. Comparing human perception to the outcome of the proposed algorithm shows a high degree of correspondence.
doi:10.21437/eurospeech.1997-466 fatcat:k7o4oilerrcnhmtu7syfjod4ym