When testing the demo, measure:

While "sounding good" is the primary test, the Acapela Text to Speech Demo allows you to test advanced technical features that matter for developers.

Many TTS providers offer pre-recorded "samples." However, pre-recorded samples are marketing tools. They are carefully scripted to sound perfect. The Acapela Text to Speech Demo, conversely, is a diagnostic tool.

Here is why the demo experience is critical:

Indie game developers who cannot afford voice actors use the demo to prototype character dialogue. They download the WAV files, edit them in Audacity, and drop them into their game engine to test emotional impact.