Q: Qt - [c++] texttospeech is not working when QSound plays

kevin_d

Hello Dear Qt Forum!

When playing a QSound and triggering a texttospeech->say("some text"), texttospeech seems to be not able to say.

I tried to invoke texttospeech->say(..) in a QMetaObject-call, but did not help.

Is there a possibility to do both "sounds" immediately after each other?

best regards, kevin_d

JoeCFD

@kevin_d you need some mixing mechanism to send two audio sources to a mixer for the audio sink

SGaist

Hi,

How exactly are you doing that ?
On which OS ?

kevin_d

I am using Qt 5.12.5 on Windows.

auto* sound = new QSound(":/Resources/jingle.wav");
auto* text2Speech = new QTextToSpeech(this);
QVector<QLocale> _l = text2Speech->availableLocales();
text2Speech->setLocale(_l[0]);
QVector<QVoice> _v = text2Speech->availableVoices();
text2Speech->setVoice(_v.at(0));

sound->play();

text2Speech->say("Welcome");

SGaist

You might want to try QSoundEffect.

That said, 5.12 is deprecated. You should move 5.15 or even better Qt 6.

That said, @JoeCFD has a point, there might be a need for some mixing.

kevin_d

Any hints?
Is it possible to wait for QSound->play() ?

SGaist

QSound being asynchronous, you would need to pole its state using the isFinished function and then start the next audio item.