Sound absorption of external intubation Helmholtz resonance structure
The sound absorption performance of the external intubation Helmholtz resonance structure was investigated. The external intubation method effectively reduces the panel thickness of the Helmholtz resonance. Finite element simulation was used to calculate the soundabsorption coefficient
of the structure. The results show that the sound absorption peak of the external intubation structure shifts downwards with the increasing of the external intubationlength. The acoustic impedance of the external intubation structure is slightly different from the Helmholtz resonance of the
same size. This means that the external stepped structurechanges the acoustic impedance of the Helmholtz resonance structure.
The requested document is freely available to subscribers. Users without a subscription can purchase this article.
- Sign in below if you have already registered for online access
Sign in
Document Type: Research Article
Affiliations: Environment Noise and Vibration
Publication date: 12 October 2020
The Noise-Con conference proceedings are sponsored by INCE/USA and the Inter-Noise proceedings by I-INCE. NOVEM (Noise and Vibration Emerging Methods) conference proceedings are included. All NoiseCon Proceedings one year or older are free to download. InterNoise proceedings from outside the USA older than 10 years are free to download. Others are free to INCE/USA members and member societies of I-INCE.
- Membership Information
- INCE Subject Classification
- Ingenta Connect is not responsible for the content or availability of external websites
- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content