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Language & Voice
The language list comes from the voices your browser and operating system actually provide. Chrome ships Google network voices, Edge and Windows add natural offline voices, macOS/iOS contribute their premium voices.
Available voices for the selected language are listed here. Cloud-marked voices are synthesised by the browser's own service - this site never sees your text.
Reading Parameters
0.5x to 2x. Around 0.8 is clearest for foreign-language material; 1.5 saves time.
0 low, 1 natural, 2 shrill. Most voices sound best between 0.8 and 1.2.
Output level of this voice, multiplied by your system volume.
Playback
准备就绪:选好发音人,点「生成朗读」即可。
The Web Speech API never hands the synthesised audio to the page, so this tool plays but cannot export an MP3. For a file, use a server-side TTS site (such as crikk.com, the reference for this page).