Essays about: "DFT FFT"

Showing result 1 - 5 of 11 essays containing the words DFT FFT.

  1. 1. Approach for frequency response-calibration for microphone arrays

    University essay from KTH/Hälsoinformatik och logistik

    Author : Jacob Drotz; [2023]
    Keywords : microphone array; frequency response; calibration; sine sweep; inverse filter; digital signal processing DSP ; convolution; Fast Fourier Transform FFT ; Discrete Fourier Transform DFT ; acoustic measurements; audio engineering; mikrofonarray; frekvenssvar; kalibrering; sinussvep; inverterat filter; digital signalbehandling; faltning; Fast Fourier Transform FFT ; Discrete Fourier Transform DFT ; akustiska mätningar; ljudteknik;

    Abstract : Matched frequency responses are a fundamental starting point for a variety ofimplementations for microphone arrays. In this report, two methods for frequencyresponse-calibration of a pre-assembled microphone array are presented andevaluated. READ MORE

  3. 2. 64-point FFT Instruction Implementation and Evaluation on a Microcode Programmable Processor

    University essay from Linköpings universitet/Institutionen för systemteknik; Linköpings universitet/Tekniska fakulteten

    Author : Yongjun Liu; Zejun Huang; [2022]
    Keywords : FFT; Instruction design;

    Abstract : Fast Fourier Transform is an efficient algorithm for computing the Discrete Fourier Transform (DFT) and one of the most important algorithms used in many digital signal processing applications over decades. This thesis presents an efficient implementation method of a 32-bit complex number 64-point FFT instruction on a micro-programmable processor. READ MORE

  4. 3. Development of Stockham Fast Fourier Transform using Data-Centric Parallel Programming

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

    Author : Gabriel Bengtsson; [2020]
    Keywords : ;

    Abstract : Writing efficient scientific applications for modern High Performance Computing (HPC) systems has become much harder during the last years due to the rise of heterogeneous computer architectures. The inclusion of hardware accelerators has caused an increase in the number of required technologies to reach high performance, a change that has programming these systems outside the skill-set of a domain scientist. READ MORE

  5. 4. Vibration analysis for condition monitoring of mechanical presses

    University essay from Lunds universitet/Industriell Produktion

    Author : Julia Runesson; [2019]
    Keywords : Vibration analysis; Predictive maintenance; Condition monitoring; Mechanical press; Press maintenance; PSD; DFT FFT; RMS; Kurtosis; Technology and Engineering;

    Abstract : In a world where the concept of just-in-time has been lifted outside of the manu-facturing world and onto the market, the increasing demand of luxury wares like cars is accompanied only by tougher industrial conditions and no room for error. Loss of productivity and decrease in efficiency can be devastating to any manufac-turing company in today’s market climate. READ MORE

  6. 5. A study of classification methods to identify sound signals of a washing machine

    University essay from Lunds universitet/Matematik LTH

    Author : Chiharu Kazama; [2019]
    Keywords : Fourier transform; DFT; FFT; STFT; sounds classification; Keras; supervised learning; neural network; Random search; machine learning; signal processing; Mathematics and Statistics;

    Abstract : Syftet med denna uppsats är att undersöka och klassificera ljud från en tvättmaskin. Ett tvättmaskinsprogram har olika faser, t ex vattenfyllning, tvättning, centrifugering, etc. Varje fas har ett eget ljud, därför kan vi anta vilken av faserna det är från ljudet, även om vi inte ser tvättmaskinen. READ MORE