Hi, Am So, 13.01.2013, 22:41 schrieb Luke Yelavich: > On Sat, Jan 12, 2013 at 07:18:12AM EST, Christophe Strobbe wrote: >> Thanks for the pointer. I found that eSpeak expects values between 80 >> and >> 450 (default: 175) - at least on the command line: >> <http://espeak.sourceforge.net/commands.html> >> So I assume there is a conversion somewhere between the Orca Preferences >> and the call to the eSpeak TTS. I didn't find that kind of conversion in >> speak_lib.h (nor in several other source files from eSpeak). >> The values in the Orca Preferences (0-100) clearly don't represent words >> per minute. > > Orca uses speech-dispatcher, and speech-dispatcher applies a conversion, > spreading the available synthesizer speech rates over 0-100
Thanks. I found the conversion from speech-dispatcher to eSpeak's rate at <http://git.freebsoft.org/?p=speechd.git;a=blob;f=src/modules/espeak.c;hb=0ca7cc162c31daa5d6d35e9ce3e4171572eb1a95>: static void espeak_set_rate(signed int rate) { assert(rate >= -100 && rate <= +100); int speed; int normal_rate = EspeakNormalRate, max_rate = EspeakMaxRate, min_rate = EspeakMinRate; if (rate < 0) speed = normal_rate + (normal_rate - min_rate) * rate / 100; else speed = normal_rate + (max_rate - normal_rate) * rate / 100; // some code snipped } However, this code assumes that EspeakMaxRate = 390 and EspeakNormalRate = 170, while the documentation at <http://espeak.sourceforge.net/commands.html> mentions a max speed of 450, and a default of 175. Assuming that the code and documentation I consulted are up to date, there are two discrepancies here. (For the conversion between Orca's range of 1 - 100 and speech dispatcher's range of -100 to +100, I currently assume the formula speechD = (orca - 50) * 2. I have not found this documented anywhere.) By the way, are there any plans to convert Orca's settings to gsettings in the long run? Best regards, Christophe -- Christophe Strobbe Akademischer Mitarbeiter Adaptive User Interfaces Research Group Hochschule der Medien Nobelstraße 10 70569 Stuttgart Tel. +49 711 8923 2749 _______________________________________________ gnome-accessibility-list mailing list gnome-accessibility-list@gnome.org https://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
