HeyGen 专业语音克隆需 30 分钟至 2 小时音频，保留呼吸停顿笑声
HeyGen 的语音克隆要喂 30 分钟到 2 小时的录音，连你笑场和换气的方式都能学到，和几秒参考音的玩法完全不同。
HeyGen 的 Professional Voice Clone 需要 30 分钟到 2 小时的录音来训练。官方称模型会保留呼吸、停顿、笑声、口音以及元音的发音方式。2 小时的语料中包含数百次迟疑、自我修正和半截笑声，这是短参考音频无法提供的。HeyGen 表示克隆结果与本人声音难以区分。
Voice cloning has moved past matching timbre. Most of the work now is in what happens between the words.
@HeyGen 's Professional Voice Clone trains on 30 minutes to 2 hours of your recorded audio and is built to keep breaths, pauses, laughs, and accent, along with how your vowels sound.
That data range is the point. Two hours of someone talking contains hundreds of hesitations, recoveries, half-laughs, and changes in pace. A short reference clip can’t show a model how you breathe before a long sentence or where your accent comes through when you speed up.
Those small irregularities are what listeners use to decide whether a voice belongs to a person.
HeyGen says the result is a voice no one can tell apart from yours.
