强制对齐测验

当您参加测验时，就会出现答案和解释。

1. 给定音频及其转录内容，强制对齐会产生什么输出？
   • 已知转录中单词或声音的精确开始和结束时间戳
   • 翻译成另一种语言
   • A new transcript created without using supplied words
   • A noise-reduced audio file
2. 为什么对齐被称为“强制”？
   • The model must increase recording volume
   • The model is constrained to fit the supplied transcript
   • A user must set each boundary by hand
   • The system translates the transcript
3. 经典对齐器中的发音词典提供了什么？
   • The recording’s sample rate
   • The final timestamps for every word
   • A mapping from written words to expected phone sequences
   • A translation for each language
4. 经典基于Kaldi的蒙特利尔强制对齐器使用哪种搜索方法来找到语音中的可能序列？
   • Bubble sort over word strings
   • Randomly selecting timestamps
   • Linear regression on sentence length
   • Viterbi decoding over an HMM-based acoustic model
5. 在WhisperX中，什么有助于在单词级强制对齐之前处理长文本音频？
   • Voice-activity segmentation into speech chunks
   • Deleting the supplied transcript
   • Changing every word into a phoneme by hand
   • Skipping audio and estimating timestamps from punctuation
6. Which task can use the word boundaries produced by an aligner?
   • Determining the speaker’s identity with certainty
   • Synchronizing captions or karaoke text to speech
   • Translating speech without a transcript
   • Removing every background sound
7. Can forced alignment establish that the supplied transcript is factually correct?
   • Yes, it always corrects every transcript error
   • Only when the audio is stereo
   • No; it estimates timing for the provided text and does not verify the words
   • Yes, if a pronunciation dictionary is supplied
8. What can happen when a word is missing from an aligner’s pronunciation dictionary?
   • The audio automatically becomes translated
   • All following timestamps become legally certified
   • The word is guaranteed to align correctly without a model
   • The tool may need a pronunciation entry or a supported unknown-word strategy