iOS Question Problem with B4i speechrecogniton and TTS

[rboeck]

Today i tried to use a combination of both technologies; when i first started the app, TTS was working. When i used speechrecognition, all further TTS outputs were surpressed, but i didnt get any error.
My speaker was also not muted, other apps worked just fine. Any ideas?

 

[Erel]

Can you upload a small project that reproduces the problem?

It is probably related to the audio session settings.

 

[rboeck]

I made a sample, but now i can see a crash by running Speech.Startrecording(True); maybe this is a step to the solution.
New version of sample included - code corrected, but problem exists further.
Speak button works for me, as long i dont use 'start recording'.

 

[JanPRO]

Hi,

there are two big mistakes in your code:
The Speech & ActivityIndicator objects were not initilaized.
Change this and check whether the SetLanguage method of Speech returns true or false.

Jan

 

[rboeck]

Sample in #3 updated; problem exists further.

 

[JanPRO]

Hi,

as Erel already guess, there is a problem with the audio session setting. You need to change the category of the shared audio session before using TTS/STT:

'When using TTS use SetCategory(False)
Sub SetCategory(Record As Boolean)
    Dim NaObj As NativeObject = Me
    NaObj.RunMethod("setCategory:",Array(Record))
  
    #If OBJC
    -(void)setCategory:(BOOL)B{
        AVAudioSession* AS = [AVAudioSession sharedInstance];
        if (B){
            [AS setCategory:AVAudioSessionCategoryRecord error:nil];
            [AS setMode:AVAudioSessionModeMeasurement error:nil];
            [AS setActive:true withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];
        }else{
            [AS setCategory:AVAudioSessionCategoryPlayback error:nil];
            [AS setMode:AVAudioSessionModeDefault error:nil];
        }
    }
    #End If
End Sub

Attached you can find the modified example.

Jan

 

[rboeck]

Problem solved! It works like i dreamed.