Festival offers a general framework for building speech synthesis systems as well as including examples of various modules. As a whole it offers full text to speech through a number APIs: from shell level, though a Scheme command interpreter, as a C++ library, from Java, and an Emacs interface. Festival is multi-lingual (currently British English, American English, and Spanish.)
Festival is available in the [extra] repository:
# pacman -S festival festival-english
$ echo "This is an example. Arch is the best." | festival --tts
If your hear all the example text, you sucessfully installed a TTS system.
If you do not hear anything, hear something strange, or get a message about /dev/dsp, see the Troubleshooting section.
Install another voice package
The installation described above will install the British English voice and set it as the default. To change it to something else, you must install another voice package.
American English voice:
# pacman -S festival-us
British English voice :
# pacman -S festival-english
Other voices are available for Festival; some of them can be found in the AUR.
HTS compatibility patches
Some say that HTS voices for Festival are the best ones freely available. Sadly they are not compatible with Festival >2.1 without patching it (and the new voice versions are not made available for downloading).
Using with PulseAudio
Add these lines to the end of your .festivalrc file, or to /usr/share/festival/festival.scm :
(Parameter.set 'Audio_Required_Format 'aiff) (Parameter.set 'Audio_Method 'Audio_Command) (Parameter.set 'Audio_Command "paplay $FILE --client-name=Festival --stream-name=Speech")
You can set a default voice by adding these lines to the end of your
~/.festivalrc file, or to
(set! voice_default 'voice_cmu_us_slt_arctic_hts)
You can also set the default voice in
You must be root and the voices are at the end of the file. Just switch them around
Read a text file:
festival --tts /path/to/letter.txt
Read a text file to wav:
cat letter.txt | text2wave -o letter.wav
Interactive mode (testing voices etc.)
festival has an interactive prompt you can use for testing. Some examples (with sample output)
$ festival [...] festival>
List available voices:
festival> (voice.list) (cstr_us_awb_arctic_multisyn kal_diphone don_diphone)
festival> (voice_cstr_us_awb_arctic_multisyn) #<voice 0x1545b90>
festival> (SayText '"test this is a test oh no a test bla test") inserting pause after: t. Inserting pause [...] id _63 ; name t ; id _65 ; name # ; #<Utterance 0x7f7c0c144810>
festival> help "The Festival Speech Synthesizer System: Help
Quit: ctrl+d or
Example Script: Ping
One classic app that can make use of this is ping. Use this script to constantly ping a host, and return ping if success, fail is not:
#!/bin/bash while [ 1 = 1 ]; do ping -c 1 $1 && (echo "Ping" | festival --tts) || (echo "Fail" | festival --tts) done
Note that this does not really work on multisynth voices, as they take a while to prepare before playing.
Can't open /dev/dsp
If festival returns the following error message:
Linux: can't open /dev/dsp
Switch to ALSA output by adding these lines to the end of your .festivalrc file, or to /usr/share/festival/festival.scm (source):
(Parameter.set 'Audio_Method 'Audio_Command) (Parameter.set 'Audio_Command "aplay -q -c 1 -t raw -f s16 -r $SR $FILE")
Alsa playing at wrong speed
If the solution above gives you Mr. Squeaky Voice, you might want to try:
(Parameter.set 'Audio_Method 'Audio_Command) (Parameter.set 'Audio_Command "aplay -Dplug:default -f S16_LE -r $SR $FILE")