iOS Question TTS utterance delay

Branko Milosevic · Jun 5, 2017

I need to use pre and post uttreance delay in a TTS app which I just ported from b4A. On Android I used play silence method. AVSpeachSynthesizer has preutterancedelay and postutterancedelay available for this purpose.

B4X:

var preUtteranceDelay: TimeInterval { get set }

Can someone help with implementing this?. TYIA

Branko Milosevic · Jun 5, 2017

Here is the link https://developer.apple.com/reference/avfoundation/avspeechutterance/1619679-preutterancedelay

Erel · Jun 5, 2017

You can use this code to add a pre and post delay:

B4X:

Sub SpeakWithDelay(ts As TTS, PreDelayMs As Int, Text As String, PostDelayMs As Int)
   Dim sp As NativeObject
   sp = sp.Initialize("AVSpeechUtterance").RunMethod("alloc", Null).RunMethod("initWithString:", Array(Text))
   sp.SetField("preUtteranceDelay", PreDelayMs / 1000)
   sp.SetField("postUtteranceDelay", PostDelayMs / 1000)
   sp.SetField("rate", ts.SpeechRate)
   sp.SetField("pitchMultiplier", ts.Pitch)
   Dim voice As NativeObject
   voice = voice.Initialize("B4IObjectWrapper").RunMethod("getMap:", Array(ts)).RunMethod("objectForKey:", Array("voice"))
   If voice.IsInitialized Then
     sp.SetField("voice", voice)
   End If
   Dim no As NativeObject = ts
   no.RunMethod("speakUtterance:", Array(sp))
End Sub

Branko Milosevic · Jun 5, 2017

Thanks Erel. I like that this sub inherits user's settings for rate, pitch and voice.

iOS Question TTS utterance delay

Branko Milosevic

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Branko Milosevic

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Erel

B4X founder

Branko Milosevic

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iOS Question TTS utterance delay

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