blob: 257299179059f7cb69575d421d8290baeeb764db (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
Speech Dispatcher:
Key features:
* Common interface to different TTS engines
* Handling concurrent synthesis requests -- requests may come
assynchronously from multiple sources within an application and/or
from different applications
* Subsequent serialization, resolution of conflicts and priorities of
incomming requests
* Context switching -- state is maintained for each client connection
independently, event for connections from within one application
* High-level client interfaces for popular programming languages
* Common sound output handling -- audio playback is handled by Speech
Dispatcher rather than the TTS engine, since most engines have limited
sound output capabilities
What is a very high level GUI library to graphics, Speech Dispatcher is
to speech synthesis. The application neither needs to talk to the devices
directly nor to handle concurrent access, sound output and other tricky
aspects of the speech subsystem.
Supported TTS engines:
* Festival
* Flite
* Espeak
* Cicero
* IBM TTS
* Espeak+MBROLA (through a generic driver)
* Epos (through a generic driver)
* DecTalk software (through a generic driver)
* Cepstral Swift (through a generic driver)
* Ivona
* Pico
Supported sound output subsystems:
* OSS
* ALSA
* PulseAudio
* NAS
The architecture is based on a client/server model. The clients are all
the applications in the system that want to produce speech (typically
assistive technologies). The basic means of client communication with
Speech Dispatcher is through a Unix socket or Inet TCP connection using
the Speech Synthesis Interface Protocol (See the SSIP documentation for
more information). High-level client libraries for many popular
programming languages implement this protocol to make its usage as
simple as possible.
Supported client interfaces:
* C/C++ API
* Python 3 API
* Java API
* Emacs Lisp API
* Common Lisp API
* Guile API
* Simple command line client
Existing assistive technologies known to work with Speech Dispatcher:
* speechd-el
* Orca (see http://live.gnome.org/Orca/SpeechDispatcher)
* Yasr
* LSR
* BrlTTY
|
