Search for dissertations about: "Sound field separation"

Showing result 1 - 5 of 12 swedish dissertations containing the words Sound field separation.

2. 1. Sound field separation with microphone arrays

   Author : Elias Zea; Ines Lopez Arteaga; Mats Åbom; Leif Kari; Jean-Hugh Thomas; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Sound field separation; Microphone arrays; Near-field acoustic holography; Reflecting surfaces; Railway rolling noise; Vehicle and Maritime Engineering; Farkostteknik;

   Abstract : Sound field analysis is a fundamental tool in the design, manufacturing, testing and diagnosis of machines and transportation means, as well as the legislations that regulate noise levels in order to minimize environmental pollution. Customary solutions to the problem of sound field analysis are microphone array technologies such as near-field acoustic holography (NAH) and beamforming. READ MORE

4. 2. Before Sound: Transversal Processes in Site-Specific Sonic Practice

   Author : Åsa Stjerna; Göteborgs universitet; []
   Keywords : HUMANIORA; HUMANITIES; sound installation; site specific; site specificity; sound art; artistic research; philosophy of immanence; assemblage; affect; ethics; public space; transversality; transversal; Gilles Deleuze; Félix Guattari; sonification; sound design; sonic practice; transformation;

   Abstract : This doctoral research explores the capacity of site-specific practices of sound installation to bring about transformation. It claims that in order to understand this capacity, we need to address the complexity of the transversal processes that make up artistic practices in this field, and understand that these transversal processes in fact precede sound. READ MORE

5. 3. Acoustic scattering in ducts and influence of flow coupling

   Author : Susann Boij; KTH; []
   Keywords : sound; vortex sheet; flow separation; end correction; Strouhal number; non-orthogonal modes; energy balance; TECHNOLOGY; TEKNIKVETENSKAP;

   Abstract : The subject of this thesis is the acoustic properties offlow duct area expansions and the influence of flow-acousticcoupling at sharp edges. For low Mach number flow, significantinteraction between the sound field and the flow field canoccur at such points of flow separation. READ MORE

6. 4. Single layer near-field acoustic imaging in space-invariant reflective environments

   Author : Elias Zea; Ines Lopez Arteaga; Efren Fernandez-Grande; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; near-field acoustic holography; field separation techniques; single layer; space-invariance; reflective envirionments; närfält akustisk holografi; fältseparationstekniker; enkelt lager; utrymmes invarians; reflekterande miljöer; Vehicle and Maritime Engineering; Farkostteknik;

   Abstract : The visualization of optical fields, or widely known as photography, is a common practice that can also be applied to acoustic fields. No less than three decades of research in acoustic imaging demonstrate its potential and relevance in plenty applications such as sound source identification and localization, as well as characterization of noise generation mechanisms. READ MORE

7. 5. Drill Failure Detection based on Sound using Artificial Intelligence

   Author : Thanh Tran; Jan Thim; Sebastian Bader; Kalle Åström; Mittuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Convolutional neural network; machine failure detection; Mel-spectrogram; long short-term memory; sound signal processing;

   Abstract : In industry, it is crucial to be able to detect damage or abnormal behavior in machines. A machine's downtime can be minimized by detecting and repairing faulty components of the machine as early as possible. It is, however, economically inefficient and labor-intensive to detect machine fault sounds manual. READ MORE