 |
 |
June 2003 |
|
|
| Features |
|
|
 |
Interpreting the Directivity Index (DI) |
| |
by Andrew Dittberner, PhD, and Ruth Bentler, PhD |
| |
The most common method for quantifying the directionality of a hearing aid is through the use of the directivity index (DI). Unfortunately, there are at least three different ways in which DI can be expressed. Learn how to recognize the differences between the various uses of the term DI. |
|
|
|
The HR 2003 Dispenser Survey |
| |
by Karl E. Strom |
| |
Tremendous changes are occurring within the hearing healthcare field, including a dramatic movement toward high-end digital devices, lower prices for most types and technologies of hearing instruments, and a continued downward trend in the number of first-time customers visiting dispensing offices. Find out what else is happening and how your business stacks up. |
|
|
|
Experiences with Developing and Maintaining Web Sites: A Survey |
| |
by Cynthia F. Parker, AuD, Michael Stewart, PhD, Kris English, PhD and Patricia McCarthy, PhD |
| |
A survey of audiologists indicates that Web sites provide good opportunities, but satisfaction with the sites is mixed. |
|
|
|
Speech or Noise? Using Signal Detection and Noise Reduction |
| |
by Nancy Tellier, MSc, Horst Arndt, PhD, and Henry Luo, PhD |
| |
A technical review of a new multidimensional signal detection and noise reduction system, along with background on various digital strategies for enhancing speech in noise. |
|
|
|
Tech Focus: Audiometers and Real Ear Measurement Equipment |
| |
In this special Tech Focus, The Hearing Review shines a spotlight on selected audiometers used by hearing health care professionals in the testing and fitting of hearing instruments. The information presented here was supplied to HR by the respective manufacturers of the products. To obtain more information on these test chambers, fill out the Reader Service Card found on page 66 of this magazine, or contact the companies directly. |
|
|
|
|
|
|
|
|
|
| Departments |
|
|
|
LOOKING FOR EXPERT ADVICE?
|
 |
|
|
|
Experts here are available to answer all your questions!
