التفاصيل البيبلوغرافية
| العنوان: |
Application of the complex cepstrum to the location of acoustic sources near reflective surfaces |
| المؤلفون: |
Fuller, C. R, Tavakkoli, S, Elliott, K. B, Hurst, C. J, Obrien, W. F |
| بيانات النشر: |
United States: NASA Center for Aerospace Information (CASI), 1987. |
| سنة النشر: |
1987 |
| مصطلحات موضوعية: |
Acoustics |
| الوصف: |
The complex cepstrum is used to correct bearing estimations of acoustic sources in the presence of a reflective surface. An automated liftering procedure is used which zeros out a block portion of the cepstrum including the echo information. The problem of the resulting distortion is alleviated by applying a coherence criterion to the recovered direct signals at each microphone. Thus to a large degree the interactive nature of cepstral processing is overcome for this application. For the test signals and geometries considered the cepstrum is shown to accurately correct for bearing errors in acoustic signals contaminated with reflections from nearby surfaces. |
| نوع الوثيقة: |
Report |
| اللغة: |
English |
| URL الوصول: |
https://ntrs.nasa.gov/citations/19870035086 |
| ملاحظات: |
NAG1-547 |
| رقم الانضمام: |
edsnas.19870035086 |
| قاعدة البيانات: |
NASA Technical Reports |