Speech Recognition Systems

Speech Recognition Systems

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Microsoft DEV287x-LAAS

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Learn about the pieces of a modern automatic speech recognition (ASR) system as we cover fundamental acoustic and linguistic theory, data preparation, language modeling, acoustic modeling, and decoding.

Developing and understanding Automatic Speech Recognition (ASR) systems is an inter-disciplinary activity, taking expertise in linguistics, computer science, mathematics, and electrical engineering.

When a human speaks a word, they cause their voice to make a time-varying pattern of sounds. These sounds are waves of pressure that propagate through the air. The sounds are captured by a sensor, such as a microphone or microphone array, and turned into a sequence of numbers representing the pressure change over time. The automatic speech recognition system converts this time-pressure signal into a time-frequency-energy signal. It has been trained on a curated set of labeled speech sounds, and labels the sounds it is presented with. These acoustic labels are combined with a model of word pronunciation and a model of word sequences, to create a textual representation of what was said.

Instead of exploring one part of this process deeply, this course is designed to give an overview of the components of a modern ASR system. In each lecture, we describe a component's purpose and general structure. In each lab, the student creates a functioning block of the system. At the end of the course, we will have built a speech recognition system almost entirely out of Python code.

Course Prerequisites

  • Some python experience
  • Basic Machine Learning principles
  • Knowledge of probability and statistics

What you will learn

  • Fundamentals of Speech Recognition
  • Basic Signal Processing for Speech Recogntion
  • Acoustic Modeling and Labeling
  • Common Algorithms for Language Modeling
  • Decoding Acoustic Features into Speech
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Official Microsoft Course

Speech Recognition Systems

Speech Recognition Systems

Microsoft DEV287x
Microsoft
Open edX
90 days

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Microsoft Certificate of Completion

Microsoft A85-04383
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Speech Recognition Systems

LaaS bundle Microsoft DEV287x-LAAS

For free