loudness-tts by Loudness.ai (https://loudness.ai), Copyright 2026 Asad Shehzad.

loudness-tts is free software under the GNU General Public License, version 3 or later (LICENSE). It uses Piper
(https://github.com/OHF-Voice/piper1-gpl, GPL-3.0) and espeak-ng (GPL-3.0), installed as dependencies.

loudness_tts/textprep.py is the ttsprep text preparation layer, Apache License 2.0 (LICENSE-APACHE); it can be reused
under that licence on its own.

Voice models are not included. They are downloaded from their original sources and keep their own licences; each
voice's licence, training data and credit line are in loudness_tts/data/voices.json and shown by `loudness-tts voices` and
Voice.credit. Voice scores come from Loudness.ai's open study LA-RB-2026-003 (CC BY 4.0):
https://loudness.ai/research/piper-tts-voices-ranked/
