VOICE_CHAT_TTS_PLAYBACK_FINISHED has a delay of ~0.5 seconds

[Duugu]

Applies to

• All game clients (tested with Retail, TBC, Era, SoM)
• All OS plattforms (tested on PC, Mac)

Description of the issue

Calling C_VoiceChat.SpeakText triggers VOICE_CHAT_TTS_PLAYBACK_FINISHED if the utterance is completed.

However, the event constantly triggers ~0.5 seconds after the utterance is completed.

I would expect to have that event immediatly after the utterance is completed. Not 0.5 seconds later.

Prove

• Login to any game client on any plattform.
• Use /etrace
• Use the following script: /script C_VoiceChat.SpeakText(0, "Just a test", 1, 1, 100)
• Listen to the utterance, observe when the event triggers. There is a delay of ~0.5 seconds.

[Duugu]

Pleaaaaaaaaase, with a lot of sugar on top, try to fix this issue. :) Or, alternatively, fix https://github.com/Stanzilla/WoWUIBugs/issues/201

It is such a huuuuuuuge blocker for blind accessibility.

Having a delay of 0.5 seconds after each audio output basically renders the TTS useless for everything than just generic reading of single chat lines. Without at least one of them fixed it basically is impossible to use the TTS to build queued audio interfaces. I am still using my own custom build ingame TTS engine because if this.

If this is or the other bug is fixed I could build a useful and responsive custom audio queue system based on the Blizzard TTS.