[asterisk-bugs] [JIRA] (ASTERISK-28462) func_talkdetect: TALK_DETECT firing immediately even if phone microphone is muted

[Joshua C. Colp (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-28462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=247473#comment-247473 ] 

Joshua C. Colp commented on ASTERISK-28462:
-------------------------------------------

>From [~kharwell] on forum:

{noformat}
I think this may be a bug in Asterisk. Here’s the code that sets “talking” (from func_talkdetect.c):

ast_dsp_silence(td_params->dsp, frame, &total_silence);

if (total_silence < td_params->dsp_silence_threshold) {
    if (!td_params->talking) {
		update_talking = 1;
		td_params->talking_start = ast_tvnow();
	}
	td_params->talking = 1;
}

I’m guessing total_silence here starts out at zero or some really low number. Either way it is most likely less than the dsp_silence_threshold value. If so then it would trigger talking every time at start.

Anyhow, I was able to replicate the problem as well when watching for AMI events. Please create a bug report on our issue tracker. Describe the problem, and feel free to add a link to your post here.
{noformat}

> func_talkdetect: TALK_DETECT firing immediately even if phone microphone is muted
> ---------------------------------------------------------------------------------
>
>                 Key: ASTERISK-28462
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-28462
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Functions/func_talkdetect
>    Affects Versions: 16.4.0
>            Reporter: Matt Altepeter
>
> This issue on the community forums provides a bit more background on the issue: https://community.asterisk.org/t/issues-with-talk-detect-and-ari/80096/10
> But essentially, when I call into a number with talk detect set and then going to a stasis application, the sound file playback (first step that stasis executes) stops playback immediately because when I receive the ChannelTalkingStarted event I want to stop the playback of the file. This occurs even when the microphone is muted prior to the call being answered.
> The speculation, as seen in the link above, is that total_silence is set to an extremely low value. 
> This issue was able to be replicated via the AMI as well



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