Daniele79

<a href="http://voice.phiware.com" rel="nofollow ugc">Phiware Voice</a> service has the objective to offer automatic, natural 
text to speech conversion, as a service over the web, using synthetic voices (TTS – Text-to-Speech). 
At present, we offer a service that generates the audio version of your web site’s pages, improving their 
accessibility and helping people who may have difficulty in reading the contents by themselves, or who simply 
prefer listening.

Phiware Voice

This plugin aid to integrate with the Phiware Voice service.

glowdopera

Speechable transforms your WordPress content into natural-sounding audio using AI-powered text-to-speech technology. Speechable uses Piper TTS, an open-source neural text-to-speech engine that runs in your browser.
<h4>Third-Party Service</h4>
This plugin uses the following third-party services for text-to-speech functionality:
Piper TTS Web Library
<ul>
<li>Service Provider: <a href="https://github.com/Mintplex-Labs/piper-tts-web" rel="nofollow ugc">Mintplex Labs</a></li>
<li>Library CDN: jsDelivr (https://cdn.jsdelivr.net/npm/@mintplex-labs/piper-tts-web)</li>
<li>ONNX Runtime CDN: Cloudflare (https://cdnjs.cloudflare.com/ajax/libs/onnxruntime-web)</li>
<li>WASM Phonemizer CDN: jsDelivr (https://cdn.jsdelivr.net/npm/@diffusionstudio/piper-wasm)</li>
<li>Voice Models: Downloaded from <a href="https://huggingface.co/diffusionstudio/piper-voices" rel="nofollow ugc">Hugging Face</a></li>
<li>Terms of Service: <a href="https://github.com/Mintplex-Labs/piper-tts-web/blob/main/LICENSE" rel="nofollow ugc">MIT License</a></li>
</ul>
Whisper (Word Timestamps)
<ul>
<li>Service Provider: <a href="https://huggingface.co/docs/transformers.js" rel="nofollow ugc">Hugging Face Transformers.js</a></li>
<li>Library CDN: jsDelivr (https://cdn.jsdelivr.net/npm/@huggingface/transformers)</li>
<li>Model: Xenova/whisper-tiny.en (~75MB, downloaded on first use)</li>
<li>Purpose: Provides accurate word-level timestamps for synchronized highlighting</li>
<li>Terms of Service: <a href="https://github.com/huggingface/transformers.js/blob/main/LICENSE" rel="nofollow ugc">Apache 2.0 License</a></li>
</ul>
What data is transmitted:
<ul>
<li>The TTS library and ONNX runtime are loaded from CDN when generating audio</li>
<li>Voice model files are downloaded from Hugging Face when first using a voice</li>
<li>Whisper model is downloaded for word timestamp extraction (first use only)</li>
<li>Your content text is processed locally in your browser and is NOT sent to any external server</li>
<li>Once downloaded, all resources are cached locally in your browser</li>
</ul>
Why external resources are required:
The text-to-speech engine requires machine learning runtime (ONNX) and voice models that are too large to bundle with the plugin. These are loaded on-demand from CDN services, similar to how Google Fonts or other web services work. This is a service-based approach that keeps the plugin lightweight while providing high-quality AI voices.
<h4>Key Features</h4>
<ul>
<li>AI-Powered Voices – Natural-sounding speech using Piper TTS neural network models</li>
<li>Accurate Word Highlighting – Whisper-powered word timestamps for precise synchronization</li>
<li>12 Languages – English, German, French, Spanish, Italian, Portuguese, Dutch, Polish, Russian, Chinese, Japanese, Korean</li>
<li>Customizable Player – Match your theme with custom colors and styling</li>
<li>Download Audio – Let visitors download audio files for offline listening</li>
<li>Voice Presets – Quick effects like Radio, Stadium, Cave, Chipmunk, Robot, and more</li>
<li>Free – No premium version, no limits, no hidden costs</li>
</ul>
<h4>How It Works</h4>
<ol>
<li>Install and activate the plugin</li>
<li>Go to Settings → Speechable to configure your preferences</li>
<li>Edit any post and click “Generate Audio” in the sidebar</li>
<li>The audio player automatically appears on your published posts</li>
</ol>
<h4>Voice Presets</h4>
Transform your audio with one-click presets:
<ul>
<li>Default – Natural voice</li>
<li>Radio – Broadcast quality</li>
<li>Stadium – Echo effect</li>
<li>Cave – Deep reverb</li>
<li>Chipmunk – High-pitched fun</li>
<li>Deep – Low bass voice</li>
<li>Robot – Mechanical tone</li>
<li>Telephone – Phone quality</li>
<li>Megaphone – Announcement style</li>
<li>Giant – Booming voice</li>
<li>Fairy – Magical high voice</li>
<li>Narrator – Audiobook style</li>
</ul>
<h4>Perfect For</h4>
<ul>
<li>Bloggers – Give readers an audio option</li>
<li>News Sites – Accessibility for all visitors</li>
<li>Educational Content – Help students learn</li>
<li>Accessibility – Support visually impaired users</li>
<li>Podcasters – Quick audio versions of written content</li>
</ul>
<h4>Privacy</h4>
Your content is processed locally in the browser. Text is not sent to external servers. Voice models are downloaded once and cached locally.
<h3>Usage</h3>
<h4>Getting Started</h4>
<ol>
<li>After activation, go to Settings → Speechable to configure your default options</li>
<li>Select your preferred language and voice</li>
<li>Choose which post types should have audio (posts, pages, etc.)</li>
<li>Customize the player colors to match your theme</li>
</ol>
<h4>Generating Audio for a Post</h4>
Method 1: Block Editor (Single Post)
<ol>
<li>Edit any post or page in the WordPress block editor</li>
<li>Look for the “Speechable” panel in the right sidebar (under Document settings)</li>
<li>Select your preferred voice and quality settings</li>
<li>Click “Generate Audio” and wait for processing</li>
<li>Once complete, you can preview the audio before publishing</li>
<li>Publish or update your post – the audio player will appear automatically</li>
</ol>
Method 2: Posts List (Quick Access)
<ol>
<li>Go to Posts → All Posts</li>
<li>Hover over any post to see the “Audio” button in the row actions</li>
<li>Click it to open the audio generation modal</li>
<li>Configure settings and click “Generate”</li>
<li>The audio will be saved to that post</li>
</ol>
<h4>Configuring Settings</h4>
Voice Settings
<ul>
<li>Language – Choose from 12 supported languages</li>
<li>Voice – Select a voice for the chosen language (preview available)</li>
<li>Quality – Low (faster), Medium (balanced), or High (best sync accuracy)</li>
<li>Whisper Model – Controls word timestamp accuracy (Tiny is fastest, Small is more accurate)</li>
</ul>
Voice Presets
Click any preset to quickly apply pitch and reverb effects:
<ul>
<li>Default, Warm, Bright, Radio, Narrator, Podcast, Deep, Soft, Room, Hall, Telephone, Vintage</li>
</ul>
Display Settings
<ul>
<li>Post Types – Enable audio for posts, pages, or custom post types</li>
<li>Player Position – Show player before or after content</li>
<li>Word Highlighting – Enable/disable word-by-word highlighting during playback</li>
<li>Auto-scroll – Automatically scroll to keep highlighted word visible</li>
</ul>
Player Appearance
<ul>
<li>Customize background, text, button, progress bar, and highlight colors</li>
<li>Adjust border radius for rounded or square corners</li>
<li>Live preview shows your changes instantly</li>
</ul>
<h4>Managing Audio</h4>
<ul>
<li>Regenerate – Click “Regenerate” in the editor panel to create new audio with different settings</li>
<li>Delete – Remove audio from a post using the “Delete” button</li>
<li>Download – Visitors can download the audio file using the player’s download button</li>
</ul>
<h4>Tips for Best Results</h4>
<ol>
<li>Use High quality for important content where word sync matters</li>
<li>Preview voices in Settings before generating to find the best match</li>
<li>Shorter posts generate faster – consider breaking very long content into parts</li>
<li>First generation takes longer as voice models are downloaded and cached</li>
<li>Word highlighting works best with standard theme content areas</li>
</ol>
<h3>Credits</h3>
<h4>Core Technologies</h4>
<ul>
<li>
Piper TTS – <a href="https://github.com/rhasspy/piper" rel="nofollow ugc">rhasspy/piper</a> by Mike Hansen 
Fast, local neural text-to-speech system (MIT License)
</li>
<li>
Piper TTS Web – <a href="https://github.com/Mintplex-Labs/piper-tts-web" rel="nofollow ugc">Mintplex-Labs/piper-tts-web</a> v1.0.4 
Browser-compatible Piper TTS implementation (MIT License)
</li>
<li>
OpenAI Whisper – <a href="https://github.com/openai/whisper" rel="nofollow ugc">openai/whisper</a> 
Robust speech recognition for word-level timestamps (MIT License)
</li>
<li>
Transformers.js – <a href="https://github.com/huggingface/transformers.js" rel="nofollow ugc">huggingface/transformers.js</a> v3.4.1 
Run Whisper models in the browser by Xenova (Apache 2.0 License)
</li>
<li>
ONNX Runtime Web – <a href="https://github.com/microsoft/onnxruntime" rel="nofollow ugc">microsoft/onnxruntime</a> 
Machine learning inference engine (MIT License)
</li>
<li>
Piper WASM Phonemizer – <a href="https://github.com/diffusionstudio/piper-wasm" rel="nofollow ugc">diffusionstudio/piper-wasm</a> 
WebAssembly phonemizer for text processing (MIT License)
</li>
</ul>
<h4>Voice Models</h4>
<ul>
<li>
Piper Voices – <a href="https://huggingface.co/diffusionstudio/piper-voices" rel="nofollow ugc">diffusionstudio/piper-voices</a> 
High-quality neural voice models hosted on Hugging Face
</li>
<li>
Whisper Models – <a href="https://huggingface.co/Xenova" rel="nofollow ugc">Xenova on Hugging Face</a> 
Optimized Whisper models for browser inference (whisper-tiny.en, whisper-small)
</li>
</ul>
<h4>Infrastructure</h4>
<ul>
<li>jsDelivr CDN – Fast, reliable CDN for npm packages</li>
<li>Cloudflare CDN – ONNX Runtime delivery</li>
<li>Hugging Face – Model hosting and distribution</li>
</ul>
<h4>Design</h4>
<ul>
<li>Lucide Icons – <a href="https://lucide.dev" rel="nofollow ugc">lucide.dev</a> (ISC License) 
Beautiful, consistent icon set</li>
</ul>
<h4>Development</h4>
<ul>
<li>Developer: <a href="https://tanishmittal.com" rel="nofollow ugc">Tanish Mittal</a></li>
<li>Plugin Architecture: WordPress standards-compliant</li>
<li>Browser Compatibility: Modern ES6+ with Web Workers</li>
</ul>

Speechable

Convert your WordPress posts to audio with AI-powered text-to-speech. Works in the browser with word highlighting.

Phiware Voice vs Speechable