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How to detect ringback tone, ivrs tone and hold music in an audio recording containing conversation between two people
User: stansilasmiles
Date: 12/4/2017 10:25 pm
Views: 22
Rating: 0

Hi, I'm new to this community and really excited to be here.

 

My original question is here : https://dsp.stackexchange.com/questions/45223/how-to-detect-and-remove-ringback-tone-and-ivrs-voice-etc-from-the-beginning-of

 

Please advise how I should go about this.

If this is not the right thread, please point me to the right forum

--- (Edited on 12/4/2017 10:25 pm [GMT-0600] by stansilasmiles) ---

Re: How to detect ringback tone, ivrs tone and hold music in an audio recording containing conversation between two people
User: kmaclean
Date: 12/5/2017 8:25 am
Views: 10
Rating: 0

>how would I programatically detect and remove the dial-tone at the

>beginning of a call using python

You could use a speech recognition library (e.g. CMU Sphinx) to perform "forced alignment" on your audio, and get a time stamp for when speech starts in your audio recording, and delete everything up to that point.

This assumes that your audio is recorded at the same sampling rate as the audio the acoustic model was trained on.

Hope that helps,

Ken

--- (Edited on 12/5/2017 9:25 am [GMT-0500] by kmaclean) ---

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