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IEEE SIGNAL PROCESSING MAGAZINE [17] MARCH 2015

reviews audio enhancement techniques for

music listening in a noisy environment. A

third article in this area, “Natural Sound

Rendering for Headphones,” by Sunder et

al., is an overview of techniques for render-

ing via headsets for applications in three-

dimensional audio.

Finding methods for the evaluation and

prediction of speech and audio quality is a

central task for anyone working in audio

signal processing. As subjective evaluations

are resource intense and time consuming,

it is highly desirable to find objective meth-

ods that closely match subjective measures.

Objective methods provide instant feedback

and results become reproducible. In their

article “Objective Quality and Intelligibility

Prediction for Users of Assistive Listening

Devices,” Falk et al. provide an overview of

algorithms for objective quality and intelli-

gibility evaluation for hearing aids and co-

chlear implants.

We sincerely thank all of the au-

thors for their high-quality contribu-

tions and are grateful for the reviewers

for their invaluable help in selecting

and improving the articles in this spe-

cial issue. We also thank Fulvio Gini,

special issues area editor, and Abdelhak

Zoubir, SPM’s past-editor-in-chief, for

their constant support, patience, and

guidance in the process of outlining,

soliciting, and reviewing the selected

articles. Our appreciation also goes to

Rebecca Wollman for her administra-

tive guidance in the process.

We hope that you will find this special

issue useful and inspiring for your work!

[SP]

AUDIO SIGNAL

ENHANCEMENT,

PARTICULARLY OF

SPEECH SIGNALS, HAS

ALONG RESEARCH

TRADITION AND STILL

DOMINATES THE SCENE,

AND, CONSEQUENTLY, IS

ALSO THE MAIN TOPIC

OF THIS SPECIAL ISSUE.

THE WORLD’S NEWSSTAND

THE WORLD’S NEWSSTAND