Solving Google's Continuous Audio CAPTCHA with HMM-Based Automatic Speech Recognition.
Shotaro SanoTakuma OtsukaHiroshi G. OkunoPublished in: IWSEC (2013)
Keyphrases
- automatic speech recognition
- hidden markov models
- broadcast news
- speech recognition
- acoustic features
- speech signal
- speaker identification
- conversational speech
- noisy environments
- speech retrieval
- spontaneous speech
- recognition errors
- word error rate
- word recognition
- spoken words
- multimedia
- non stationary
- search engine
- pattern recognition
- image processing
- audio features
- natural images
- multi modal
- information retrieval systems
- spoken document retrieval
- multiscale
- speaker adaptation
- speech corpus
- speech sounds
- neural network