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Subjective measurement and instrumental estimation of conversational speech quality based on perceptual dimensions

基于感知维度的会话语音质量主观测量与仪器评价

基本信息

批准号：
251103195
负责人：
Professor Dr.-Ing. Sebastian Möller
金额：
--
依托单位：
Quality and Usability Lab
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/251103195?language=en
关键词：
Subjective measurement instrumental estimation conversational

项目摘要

This research project aims at the identification, subjective measurement and instrumental prediction of quality dimensions associated with conversational transmitted speech. The idea is to describe conversational speech quality as a perceptual event in a multidimensional space, and to define a valid and reliable speech quality estimation model on this basis. Such a model estimates not only overall conversational speech quality, but also diagnoses causes and related perceptual effects of quality degradations.Following prior work accomplished for the listening-only phase, the first step is to identify perceptual dimensions in the talking-only and in the interactive (i.e. exchange of listening and talking) phase of the conversation. This is achieved via multidimensional psychoacoustic analyses, using an online simulation system which allows typical speech quality degradations of all conversational phases to be experienced by human test participants. In order to quantify the identified dimensions, a new subjective test method will be established which consists of a structured conversation test and efficiently measures all dimensions in all three phases of the conversation. This test method is used to collect databases of speech transmission settings and corresponding subjective ratings. The databases form the basis for deriving quality estimations of individual perceptual dimensions and - in a second step - of overall conversational speech quality. The derived model is finally validated against standard not-dimension-based models.

本研究项目旨在识别、主观测量和工具预测与会话传播语音相关的质量维度。其思想是将会话语音质量描述为多维空间中的感知事件，并在此基础上定义有效可靠的语音质量估计模型。该模型不仅可以估计会话语音的整体质量，还可以诊断语音质量下降的原因和相关的感知效应。在之前完成了纯听阶段的工作之后，第一步是确定对话的纯说阶段和互动（即倾听和说话的交换）阶段的感知维度。这是通过多维心理声学分析实现的，使用在线模拟系统，该系统允许人类测试参与者体验所有会话阶段的典型语音质量下降。为了量化所识别的维度，本文将建立一种新的主观测试方法，该方法由结构化的会话测试组成，并有效地测量会话所有三个阶段的所有维度。该测试方法用于收集语音传输设置和相应主观评分的数据库。数据库构成了对个人感知维度的质量估计的基础，第二步是对整体会话语音质量的估计。最后，与标准的基于非量纲的模型进行了验证。