Elgato Wave Link vs Piper

Elgato Wave Link is a free audio routing and effects app for streamers, podcasters, professionals, and other content creators. It works with USB and XLR microphones, third-party interfaces, headsets, and capture cards recognized by the computer. A horizontal routing matrix lets users direct audio sources to outputs, with up to five independent mixes and separate routing and volume levels. Users can group multiple applications, such as Zoom, Teams, Discord, Spotify, or Chrome, into one channel. The app supports VST3 effects on Windows and Audio Unit effects on macOS, with unlimited effects per input. Mixes can feed OBS Studio, MS Teams, or any application that accepts audio input. Its Stream Deck plugin can change volume, mute channels, toggle effects, and switch mixes. The Wave Link 3.0 plan lists up to eight software or non-Wave inputs, four Wave-device inputs, and five virtual mixes. Windows requires Windows 11 and 8 GB RAM; macOS requires version 15.0 or newer and 8 GB RAM.

Piper is a free local neural text-to-speech engine that generates spoken audio from text. It supports 44 languages, embeds espeak-ng for phonemization and exports WAV files. The project lists API, Linux, self-hosted and web platforms. Users can work through a command-line interface, web server, Python API or C/C++ API, and the project links a Java binding called Piper JNI. Installation instructions use the command `pip install piper-tts`. The README also links guidance for training new voices. Piper is licensed under GPL-3.0, with a listed plan price of free. The README names Home Assistant, NVDA, Open Voice Operating System, JetsonGPT and LocalAI among projects using it. The Open Home Foundation owns and governs Piper as part of more than 250 open-source projects, standards, drivers and libraries. The foundation describes privacy, choice and sustainability as its smart-home principles and is seeking maintainers.