Objective speech quality metric

Patent metadata

Field	Value
Publication number	US-9524733-B2
Application number	US-201313891978-A
Country	US
Kind code	B2
Filing date	May 10, 2013
Priority date	May 10, 2012
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

Methods and systems are provided for using a model of human speech quality perception to provide an objective measure for predicting subjective quality assessments. A Virtual Speech Quality Objective Listener (ViSQOL) model is a signal-based full-reference metric that uses a spectro-temporal measure of similarity between a reference signal and test speech signal. Specifically, the model provides for the ability to detect and predict the level of clock drift, and determine whether such clock drift will impact a listener's quality of experience.

First claim

We claim:

1. A method for determining speech quality comprising:
receiving a first signal and a second signal, wherein the second signal is a degraded version of the first signal;
creating a time-frequency representation for each of the two signals;
using the time-frequency representation for the first signal to select at least one portion of the first signal containing speech data;
identifying, based on time-frequency representation for the second signal, at least one porti…

Assignees

• Google Inc

Inventors

• Skoglund Jan
• Hines Andrew J
• Harte Noami A
• Kokaram Anil

Classifications

• G10L25/60 Primary

  Physics · mapped topic