Voice Mail Detection

Joined: Tue 12 of Aug, 2008

Voice Mail Detection

Posted:Tue 12 of Aug, 2008 (00:56 UTC)

We're currently using these amd.conf settings and was wondering if anyone had any more effective settings or knew of a way todo the following

1) Play your pompt and detect voice activity.
2) If the voice activity happens between say 4 and 5 seconds you know it's
either a) noisy env or b) an answering machine.
3) Once we've determined it's answering machine wait for no voice activity and play the voicemail prompt.

; Answering Machine Detection Configuration 

initial_silence = 3500 ; Maximum silence duration before the greeting. 
; If exceeded then MACHINE. 
greeting = 1500 ; Maximum length of a greeting. If exceeded then MACHINE. 
after_greeting_silence = 800 ; Silence after detecting a greeting. 
; If exceeded then HUMAN 
total_analysis_time = 5000 ; Maximum time allowed for the algorithm to decide 
; on a HUMAN or MACHINE 
min_word_length = 120 ; Minimum duration of Voice to considered as a word 
between_words_silence = 50 ; Minimum duration of silence after a word to consider 
; the audio what follows as a new word 
maximum_number_of_words = 5 ; Maximum number of words in the greeting. 
; If exceeded then MACHINE 
silence_threshold = 256 

Thanks for your help.

Wayne Scholar