1 research outputs found
Objective speech quality measurement for Chinese speech.
In the search for the optimisation of transmission speed and storage, speech information is often coded, or transmitted with a reduced bandwidth. As a result,
quality and/or intelligibility are sometimes degraded. Speech quality is normally
defined as the degree of goodness in the perception of speech while speech intelligibility
is how well or clearly one can understand what is being said. In order to
assess the level of acceptability of degraded speeches, various subjective methods
have been developed to test codecs or sound processing systems. Although good
results have been demonstrated with these, they are time consuming and expensive
due to the necessary involvement of teams of professional or naive subjects1[56].
To reduce cost, computerised objective systems were created with the hope of replacing
human subjects [90][43]. While reasonable standards have been reported
by several of these systems, they have not reached the accuracy of well constructed
subjective tests yet [92][84]. Therefore, their evaluations and improvements are
constantly been researched for further breakthroughs. To date, objective speech
quality measurement systems (OSQMs) have been developed mostly in Europe or
the United States, and effectiveness is only tested for English, several European
and Asian languages but not Chinese (Mandarin) [38][70][32]