*** title: HTTP vs HTTP Streaming vs Websockets description: What should you use? icon: handshake-angle --------------------- *** ### Choosing the Right Protocol for Your TTS Application: HTTP, HTTP Streaming, or WebSocket? If you’re integrating Waves TTS into your application, one important decision is how to connect to the TTS engine. We support three protocols: HTTP, HTTP Streaming, and WebSocket, each tailored to different use cases. In this post, we’ll break down the strengths of each and help you choose the best fit for your needs. ## HTTP: Best for Simplicity and Short Requests **What it is**:\ A classic REST-style interaction. You send a complete request (e.g., the full text to be converted to speech), and receive the synthesized audio as a downloadable response. **When to use it**: * You have short or moderate-length texts. * You want a simple integration, such as from a browser, mobile app, or backend job. * You don’t need real-time feedback or streaming audio. **Pros and Cons**: | Pros | Cons | | -------------------------------------------- | ---------------------------------------------------- | | Simple to integrate with standard HTTP tools | Full audio is returned only after complete synthesis | | Easy to debug and monitor | Not suitable for real-time or long-form audio | | Stateless; good for serverless environments | Reconnect needed for each request | | Works well with caching and CDNs | Higher latency compared to streaming methods | ## HTTP Streaming: Best for Faster Playback Without Complexity **What it is**:\ An enhancement of standard HTTP. The client sends a complete request, but the server streams back the audio as it's being generated, no need to wait for the full file. **When to use it**: * You want faster playback with lower perceived latency. * You send full input text but need audio to start as soon as possible. * You want low-latency audio delivery without handling connection persistence. **Pros and Cons**: | Pros | Cons | | -------------------------------------------- | ----------------------------------------------------- | | Lower latency than regular HTTP | Only one-way communication (client → server) | | Compatible with standard HTTP infrastructure | Full input must still be sent before synthesis starts | | Audio starts playing as it's generated | No partial or live input updates | | Easy to adopt with minimal changes | Slightly more complex than basic HTTP | ## WebSocket: Best for Real-Time, Interactive Applications **What it is**:\ A full-duplex, persistent connection that allows two-way communication between the client and server. You can send text dynamically and receive streaming audio back continuously. **When to use it**: * You need real-time, interactive TTS responses. * Input is dynamic or arrives in chunks (e.g., live typing, conversation). * You want persistent connections with minimal overhead per message. **Pros and Cons**: | Pros | Cons | | -------------------------------------------------- | ----------------------------------------------------- | | Ultra low latency | More complex to implement and manage | | Supports real-time, chunked input and responses | Requires persistent connection management | | Bi-directional communication | Not ideal for simple or infrequent tasks | | Great for chatbots, live agents, or dictation apps | May require additional libraries or WebSocket support |