Signal Processing and Speech Communication Laboratory
hometheses & projects › Reference-Free Speech Quality Measure for Electro-Larynx Speech

Reference-Free Speech Quality Measure for Electro-Larynx Speech

Master Thesis
Announcement date
11 Oct 2013
Research Areas

Short description

Speech enhancement algorithms can be evaluated using either subjective or objective methods. Subjective methods have the drawback that they are time-consuming, laborious, and expensive. Therefore so-called objective'' methods need to be find. <br> Furthermore there are two aspects to speech quality: the perceived overall speech quality, and the speech intelligibility. The relationship between perceived quality and speech intelligibility is not entirely understood. <br> <br> Objective speech quality measures are based on some physical measurement, e.g. acoustic pressure and some mathematically calculated values from these measurements. Typically, objective measures are calculated as some distance, typically Euclidean,<br> between objective measurements for the reference speech and the objective measurements for the distorted speech.<br> <br> In this master thesis we want to evaluate speech quality of electro-larynx speech, a certain kind of disordered speech, where no reference is given. Therefore reference-free (nonintrusive’’ or ``single-ended’’) models need to be find and applied for this situation.

Your Tasks

  • Review of literature
  • Evaluation of database
  • Comparison to other approaches
  • Documentation

Your Profile/Prerequisites

  • Motivation and interest in the topic
  • Background information in Matlab and (speech) signal processing


Martin Hagmüller ({hagmueller} or 0316/873 4377) Anna Katharina Fuchs ({anna.fuchs} or 0316/873 4367)