I would like to build an app that reads out single pre-programmed words, coded in phonemes.
I think the current TTS isn’t always accurate and sometimes hard to understand unless the word is in a sentence, so I would like to use phonemes instead.

I see fliteController doesn’t have many methods other than really ‘say’, however, I did come across this thread: here and mentions:
float flite_phones_to_speech(const char *text, cst_voice *voice, const char *outtype)
which appears to me to be in C++ (or similar). How do I access this function/method in Objective-C?

Cheers!

How do I just say phonemes? is this possible? is it in the documentation (please point me in the right direction – Thanks!!!!).

I think the current TTS isn’t always accurate and sometimes hard to understand unless the word is in a sentence

There is no OpenEars function to just say phonemes. If you’re handy with C and want to read up on the Flite public API, you can change FliteController’s implementation of Flite to accept an input of phonemes instead of words and use Flite’s flite_synth_phones function on a returned CST utterance that then needs to be turned into a CST wave, and recompile the framework to give your app access to the changed method. It’s possible but the steps involved are unfortunately outside of the support scope of this forum.

I’ve ended up created my own flite_phones_to_wave function (essentially copying flite_text_to_wave and replacing the reference of flite_synth_text with flite_synth_phones). However I’m still have dramas.
Do you know the format of the phonemes for the parameter in flite_synth_phones function? I can’t seem to find any documentation for this. Cheers.

const char * flite_text_to_phones(const char *text,
cst_voice *voice,
const char *outtype)
{
const char * phones;

cst_utterance *u;

u = flite_synth_text(text,voice);
flite_process_output(u,outtype,FALSE);
phones = print_phones(u);

delete_utterance(u);

return phones;
}

But this of course involves two synthesis passes. I do it with a really fast voice in OpenEars so it isn’t that arduous but it’s probably still noticeable.

If I recall correctly, the phonemes used in Flite are the same ones used in Pocketsphinx with the exception that Pocketphinx’s ah needs to be turned into ax.

I’m really struggling here, more function are playing really weird sounds and don’t resemble anything close to actual speech.

I tried your function, thanks, but run into trouble because I don’t have the print_phones() function.

Finding the right documentation is proving to be a nightmare.

Do you know what format the ‘text’ should be when passing to flite_synth_phones(text,voice)? All I manage to get is a jumbled miss of noise.