Essays about: "microphone"

Showing result 16 - 20 of 153 essays containing the word microphone.

1. 16. Automatic Virtual Tracking in a Multi-Participant Scenario for a Mobile Device

   University essay from Lunds universitet/Institutionen för reglerteknik

   Author : Emelie Skoog; Elin Freberg; [2022]
   Keywords : Technology and Engineering;

   Abstract : The aim of this thesis is to identify a speaker in a video stream by only using the camera of a smartphone. This creates the opportunity for a mobile application to track the speaking participant during a conference call. Conference systems that include this feature use a microphone array to localize sound and who the speaker is. READ MORE

3. 17. Removal of Noise from Speech - A case study of a construction machine

   University essay from KTH/Teknisk akustik

   Author : Tomoya Otsuka; [2022]
   Keywords : signal processing; thesis; beamforming; noise; speech; construction machine; filter; real-time; microphone; measurements; signalbehandling; avhandling; beamforming; buller; tal; byggmaskin; filter; realtid; mikrofon; mätningar;

   Abstract : This report proposes a solution to allow speech to enter a construction machine cabin while removing noise sources. Examples of noises sources include, engine noise, traffic or other construction activities. Survey of the possible methods to remove noise from speech was conducted, however, beamforming was the technique chosen. READ MORE

4. 18. Online Secondary Path Modelling for Spatial Active Noise Control with Arbitrarily Spaced Arrays

   University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

   Author : Jesper Brunnström; [2021]
   Keywords : Active noise control; Secondary path modelling; Spatial; Adaptive filter; Multichannel; Least mean squares; Aktiv brusreducering; Sekundärvägsmodellering; Spatial; Adaptiv Filtrering; Multikanal; Minsta kvadratmetoden;

   Abstract : In this work we explore online secondary path modelling (SPM) in the context of spatial active noise control (ANC). Specifically, we are interested in the reduction of broadband noise over a three-dimensional region, without restrictions on microphone and loudspeaker array placement. READ MORE

5. 19. Jet Printing Quality ImprovementThrough Anomaly Detection UsingMachine Learning

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Henrik Lind; Jacob Janssen; [2021]
   Keywords : Jet Printing; Autoencoder; Anomaly Detection; Sound; Acoustic; Machine Learning; Solder Paste; Piezoelectric Current; Self Sensing;

   Abstract : This case study examined emitted sound and actuated piezoelectric current in a solderpaste jet printing machine to conclude whether quality degradation could be detected with an autoencoder machine learning model. An autoencoder was used to detect anomalies in non-realtime that were defined asa diameter drift with an averaging window from a target diameter. READ MORE

6. 20. Pitcher : An automatic guitar tuner

   University essay from KTH/Mekatronik

   Author : Hannes Andersson; John Sjöberg; [2021]
   Keywords : Arduino; mechatronics; autocorrelation; guitar tuner; pitch detection algorithm; Arduino; mekatronik; autokorrelation; gitarrstämmare; tonavläsning;

   Abstract : Pitcher is a prototype which makes it easier for inexperienced guitar players to tune their guitars without any prior knowledge required. This thesis will explore how the construction varies between the usage of DC and a stepper motor, how reliable the tuner is and how long it takes to tune the guitar. READ MORE