• Skip to primary navigation
  • Skip to main content
SRI InternationalSRI mobile logo

SRI International

SRI International - American Nonprofit Research Institute

  • About
    • Blog
    • Press room
  • Expertise
    • Advanced imaging systems
    • Artificial intelligence
    • Biomedical R&D services
    • Biomedical sciences
    • Computer vision
    • Cyber & formal methods
    • Education and learning
    • Innovation strategy and policy
    • National security
    • Ocean & space
    • Quantum
    • QED-C
    • Robotics, sensors & devices
    • Speech & natural language
    • Video test & measurement
  • Ventures
  • NSIC
  • Careers
  • Contact
  • 日本支社
Show Search
Hide Search
Speech & natural language publications January 1, 2003 Article

Modeling Word-Level Rate-of-Speech Variation in Large Vocabulary Conversational Speech Recognition

SRI International January 1, 2003

Abstract

Variations in rate of speech (ROS) produce variations in both spectral features and word pronunciations that affect automatic speech recognition systems. To deal with these ROS effects, we propose to use a set of parallel rate-specific acoustic and pronunciation models. Rate switching is permitted at word boundaries, to allow within-sentence speech rate variation, which is common in conversational speech. Because of the parallel structure of rate-specific models and the maximum likelihood decoding method, our approach does not require ROS estimation before recognition, which is hard to achieve. We evaluate our models on a large-vocabulary conversational speech recognition task over the telephone. Experiments on the NIST 2000 Hub-5 development set show that word-level ROS-dependent modeling results in a 2.2 absolute reduction in word error rate over a rate-independent baseline system. […]

↓ Download

↓ Download

Share this

Facebooktwitterlinkedinmail

Publication, Speech & natural language publications Article

How can we help?

Once you hit send…

We’ll match your inquiry to the person who can best help you.

Expect a response within 48 hours.

Career call to action image

Make your own mark.

Search jobs
Our work

Case studies

Publications

Timeline of innovation

Areas of expertise

Blog

Institute

Leadership

Press room

Media inquiries

Compliance

Privacy policy

Careers

Job listings

Contact

SRI Ventures

Our locations

Headquarters

333 Ravenswood Ave
Menlo Park, CA 94025 USA

+1 (650) 859-2000

Subscribe to our newsletter

日本支社

SRI International

  • Contact us
  • Privacy Policy
  • Cookies
  • DMCA
  • Copyright © 2022 SRI International