Voice Technology Wiki

SEPIA

Revision as of 11:55, 23 December 2021 by Thorsten (talk | contribs) (Added the first Infobox for voice assistants :-).)
SEPIA
Website https://github.com/SEPIA-Framework/

License MIT License

Internetaccess required Unsure

Supported Languages en,de

Default Wakeword Hey SEPIA

Default TTS Engine eSpeak, MaryTTS, picoTTS

Operating System Windows, Linux, Mac OS X, Raspberry Pi

Programming Language Java

Latest Version 2.3.0

Latest Update 2019-10-13


Introduction: S.E.P.I.A. Open Assistant Framework

S.E.P.I.A. is an acronym for: self-hosted, extendable, personal, intelligent assistant. It is a modular, open-source framework equipped with all the required tools to build your own, full-fledged digital voice-assistant, including speech recognition (STT), wake-word detection, text-to-speech (TTS), natural-language-understanding (NLU), dialog-management, SDK(s), a cross-platform client app and much more.

The framework consists of several, highly customizable micro-services that work together seamlessly to form the SEPIA Open Assistant. It follows the client-server principle using a lightweight Java server and Elasticsearch DB as "brain" and a JavaScript based client that works for example as smart-speaker, smart-display or full-fledged digital assistant app.

All components work on Linux, Windows and Mac and have been optimized to even run smoothly on a Raspberry Pi.

Out-of-the-box SEPIA currently has smart-services for: news, music (radio), timers, alarms, reminders, to-do and shopping lists, smart home (e.g. using open-source tools like openHAB), navigation, places, weather, Wikipedia, web-search, soccer-results (Bundesliga), a bit of small-talk and more. To build custom services there is a Java SDK and a code editor integrated into the SEPIA Control HUB web-app. The client can be extended with custom HTML widgets.[1]

Components

Some of the core SEPIA framework components:

  • SEPIA Assist-Server - The "brain" of SEPIA responsible for: user-accounts, database integration, NLU, dialog-management, open-source TTS, smart-services (weather, navigation, alarms, news etc.), remote actions and more[2].
  • SEPIA Chat-Server - A WebSocket based Chat-Server that takes care of real-time, asynchronous user-to-user and user-to-assistant communication[3].
  • SEPIA Cross-Platform Client - The primary SEPIA client based on HTML5 web technology that runs on all modern browsers (mobile and desktop) and communicates with other SEPIA components via HTTP or WebSocket connections[4]. It supports headless- and kiosk-mode via CLEXI server to build independent smart-speaker or smart-display like devices[5]. The client is available as Android app as well via Play Store or direct download.
  • SEPIA STT-Server - A WebSocket based, full-duplex Python server for real-time automatic speech recognition (ASR) supporting multiple open-source ASR engines. It can receive a stream of audio chunks via the secure WebSocket connection and return transcribed text almost immediately as partial and final results[6].

There are many more SEPIA components and tools to discover on the official GitHub project page.

Installation

The official documentation page has the most recent installation guides.

  1. ↑ https://github.com/SEPIA-Framework/sepia-docs
  2. ↑ https://github.com/SEPIA-Framework/sepia-assist-server
  3. ↑ https://github.com/SEPIA-Framework/sepia-websocket-server-java
  4. ↑ https://github.com/SEPIA-Framework/sepia-html-client-app
  5. ↑ https://github.com/SEPIA-Framework/sepia-installation-and-setup/tree/master/sepia-client-installation
  6. ↑ https://github.com/SEPIA-Framework/sepia-stt-server
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