Re: [Espeak-general] [ANNOUNCE] Orator - Text-To-Speech GUI frontend

[Jonathan D. <jo...@js...>]

On 19 May, Reece Dunn <ms...@go...> wrote:

> The eSpeak engine is using the speak_lib.h API. At the moment, there
> are a few issues with the eSpeak engine:
>   *  the speak_lib.h API does not report the sentence length, so
> cannot correctly highlight the sentences being read.

The events list which eSpeak passes to your SynthCallback() callback
function includes events which indicate the start of each word and
sentence (espeakEVENT_WORD and espeakEVENT_SENTENCE).  So you can
highlight each word or each sentence as it is being read.

>   *  the speak_lib.h API does not support phrase events, so the UI
> treats them the same as sentences.

Please explain what you mean by a "phrase event".  How do you define a
"phrase"?  You should be able to use the espeakEVENT_WORD events to
match the current speaking position with words on your text, and
therefore determine which phrase is being spoken.

>   *  there is no pause functionality available in speak_lib.h, so this
> option is disabled.

You could implement pause by either of two methods:

1.  Stop speaking, and note the position of the last word that was
spoken (using the espeakEVENT_WORD event).  To resume, start speaking
from the next word in the text.

or

2.  Don't let your SynthCallback() function return until you want to
resume speaking text.