Sökning: "Delay-and-Sum"

Visar resultat 1 - 5 av 8 uppsatser innehållade ordet Delay-and-Sum.

  1. 1. Detection and Tracking of Elephants using Seismic Direction of Arrival Estimates

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Albin Westlund; Daniel Goderik; [2023]
    Nyckelord :Wildlife Conservation; DOA Estimation; Geophone Array; Target Tracking; Elephant Detection;

    Sammanfattning : As human settlement expands into the natural habitats of wild animals, the conflict between humans and wildlife increases. The human-elephant conflict is one that causes a tremendous amount of damage, often to poor villages close to the savannah. LÄS MER

  3. 2. 3D Synthetic Aperture Imaging Using LaserUltrasonics

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Signaler och system

    Författare :Louise Zalamans; [2021]
    Nyckelord :Synthetic Aperture Focusing Technique; SAFT; 3D imaging;

    Sammanfattning : Synthetic Aperture Focusing Technique (SAFT) is a powerful method to createfocused images of the inside of opaque samples by using delay-and-sum of acquireddata. It gives a high resolution and when using a generation laser and a detectionlaser it is also non-contact. LÄS MER

  4. 3. Beamforming and Blind Signal Separation for Far-field Voice Capture using a Microphone Array

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Luke Postema; Johan Davidsson; [2019]
    Nyckelord :Beamforming; Microphone array; Minimum variance distortionless response; delay-and-sum; direction of arrival; blind signal separation; Technology and Engineering;

    Sammanfattning : With the evolving technology of mobile electronics and other forms of communication methods, an increasing demand of speech intelligibility is introduced. In a conference room for example, multiple microphones are placed directly in front of the speaker in order to pick up clean speech. However, several challenges still exist. LÄS MER

  5. 4. Array Element Localisation

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Axel Sundberg; Olle Bristedt; [2017]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : Abstract—This article have been written in cooperation with The Swedish Defense Research Agency (FOI). The article proposes a method to calibrate hydrophone positions for improved underwater survailence in The Baltic Sea. LÄS MER

  7. 5. Speech Enhancement in Hands-Free Device (Hearing Aid) with emphasis on Elko's Beamformer

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :TELAGAREDDI S N U V RAMESH; [2012]
    Nyckelord :Speech Enhancement; Speech intelligibility; Speech Communication and Beamforming ;

    Sammanfattning : In general, an uncontrolled environment may contain degradation components like background noise, speech from other speakers etc. along with required speech components. It is very tough to concentrate only on speech signals in presence of background noise for normal listeners and hearing impaired persons. LÄS MER