Sökning: "Infrasound"

Hittade 3 avhandlingar innehållade ordet Infrasound.

1. 1. Filtering extracting features from infrasound data

   Författare :José Chilo; Thomas Lindblad; Christian Bohm; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; infrasound; seismic signals; feature extraction; wavelets; fingerprints; mining; magnetometer; Physics; Fysik; Electronics;

   Sammanfattning : The goal of the research presented in this thesis is to extract features, to filter and get fingerprints from signals detected by infrasound, seismic and magnetic sensors. If this can be achieved in a real time system, then signals from various events can be detected and identified in an otherwise torrent data. LÄS MER

3. 2. Feature Extraction for Low-Frequency Signal Classification

   Författare :José Chilo; Thomas Lindblad; Christian Bohm; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; infrasound; seismic signals; feature extraction; wavelets; fingerprints; mining; multimodal data space; Atomic physics; Atomfysik; Electronics;

   Sammanfattning : The development of the International Monitoring System (IMS) for the verification of the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) has led to a rapid revival of interest in infrasound. Furthermore, the installation of low-frequency sensors at seismic sites has increased in recent years, providing researchers with large and heterogeneous data-sets in near real-time. LÄS MER

4. 3. The sick buidling syndrome

   Författare :Tyrrell S. Burt; KTH; []
   Nyckelord :;

   Sammanfattning : This investigation consisted of an intervention study of asingle officebuilding. In the first study, already reported, itwas concluded thatmicrobiological and chemical factors wereunlikely to be responsible forsymptoms of sick buildingsyndrome (SBS) in this building. The focus of theinvestigationtherefore narrowed down to the physical factors. LÄS MER