0.5.2

[0.5.2] - 2026-07-12

Added

• Audio-file export (章を音声ファイルへ書き出し). The 読み上げ menu can
  render the current chapter to a single audio file using the same voices and
  原文/訳文 rule as playback, with a progress dialog and cancel. Blocks
  synthesized by different engines/sample rates (VOICEVOX 24 kHz, Piper
  22.05 kHz, OS voices) are resampled into one stream with a 300 ms pause
  between paragraphs. OS voices are used via QTextToSpeech's synthesize
  capability where the engine supports it; VOICEVOX and Piper always support
  export. WAV (16-bit mono) is written directly; MP3 / M4A are encoded
  through ffmpeg (auto-detected on PATH, or set 読み上げ > 音声設定 >
  ffmpeg) — MP3 at ~130 kbps VBR (-q:a 4), M4A as 96 kbps AAC.

[0.5.1] - 2026-07-12

Added

• Local AI voices for read-aloud: VOICEVOX and Piper. Besides the OS
  voices, the voice pickers list the speakers of a running
  VOICEVOX server (VOICEVOX: 四国めたん （ノーマル）, Japanese) and the .onnx voice models of a local
  Piper install (Piper: en_US-lessac-medium, multi-language). Picking a prefixed voice routes that
  language to that engine — so e.g. Japanese can be spoken by VOICEVOX while
  English in the same book falls back to an OS voice. The VOICEVOX endpoint
  (default http://localhost:50021) and the Piper executable / voices folder
  are set in 読み上げ > 音声設定. Speech rate maps to VOICEVOX speedScale /
  Piper --length_scale; synthesized audio plays through Qt Multimedia (the
  engines are built only when that module is present).

[0.5.0] - 2026-07-12

Added

• Read-aloud (読み上げ). The current chapter can be spoken block by block
  with the OS speech voices (Qt TextToSpeech; WinRT/SAPI on Windows,
  AVSpeechSynthesizer on macOS, speech-dispatcher on Linux). Reading follows
  the translation display mode — 原文 and 対訳 read the source text, 訳文
  reads the translation (falling back to the source where none is cached
  yet) — with the voice matched to the spoken language. The spoken paragraph
  is tinted and auto-scrolled into view,
  <ruby> text is spoken as its <rt> reading instead of base + furigana
  concatenated, reading starts from the paragraph currently on screen, and the
  chapter end can auto-advance into the next chapter (読み上げ menu toggle).
  Speech rate and a per-language voice are configurable in 読み上げ > 音声設定;
  play/pause/stop live on the toolbar and in the new 読み上げ menu
  (Ctrl+Shift+S toggles). Builds without Qt TextToSpeech still compile, with
  the actions reporting that no speech engine is available.