| Autor: |
William F. Lawrence, Jerry L. Punch, G. Donald Causey |
| Rok vydání: |
1978 |
| Předmět: |
|
| Zdroj: |
Journal of Speech and Hearing Research. 21:338-349 |
| ISSN: |
0022-4685 |
| DOI: |
10.1044/jshr.2102.338 |
| Popis: |
A system for measurement of attack-release times in hearing aids with automatic-gain-control circuitry is described, with a view toward implementing that portion of the ANSI S3.22-1976 Standard in which parameters for these measurements are specified. Signal generation is accomplished by using a phased-array loudspeaker arrangement designed to produce transient-free pulsed acoustic sinusoids. Output waveforms are captured by a commercial transient recorder, and are displayed in either an oscilloscopic or graphic mode. A specific means of calculating attack and release times is recommended whereby variously shaped output waveforms are amenable to the basic protocol outlined in the ANSI Standard. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
