Essays about: "spectral subtraction"

Showing result 1 - 5 of 15 essays containing the words spectral subtraction.

  1. 1. Tracing mangrove forest dynamics of Bangladesh using historical Landsat data

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Md Monirul Islam; [2017]
    Keywords : Bangladesh; Physical Geography and Ecosystem Analysis; Landsat; mangroves; change detection; time-series; NDVI; supervised classification; Earth and Environmental Sciences;

    Abstract : Present, accurate, and reliable estimation of mangrove forests in Bangladesh is limited. Former estimation of mangroves extent and density has been more or less restricted to Sundarbans and do not represent the whole country. READ MORE

  3. 2. 2D SPECTRAL SUBTRACTION FOR NOISE SUPPRESSION IN FINGERPRINT IMAGES

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Sai Venkata Satya Siva Kumar Dandu; Sujit Kadimisetti; [2017]
    Keywords : Spectral Subtraction; Peak Signal to Noise Ratio PSNR ; Structural Similarity Index SSIM .;

    Abstract : Human fingerprints are rich in details called the minutiae, which can be used as identification marks for fingerprint verification. To get the details, the fingerprint capturing techniques are to be improved. Since when we the fingerprint is captured, the noise from outside adds to it. READ MORE

  4. 3. Increasing Sound Quality using Digital Signal Processing in a Surveillance System

    University essay from Lunds universitet/Institutionen för elektro- och informationsteknik

    Author : Gustav Johnsson Henningsson; Patrik Siljeholm; [2016]
    Keywords : Digital Signal Processing Noise reduction Equalizer Microphone Spectral subtraction Surveillance Audio Wiener filter; Technology and Engineering;

    Abstract : Hearing is our second most important sense. The main focus of a surveillance camera is obviously the video but the audio shouldn't be neglected. It is possible to hear what the camera can't see and what is said in a conversation can't be showed in a video. Therefore there are good reasons to always try and achieve the best audio possible. READ MORE

  5. 4. Speech Recognition System for Noisy Environment

    University essay from Högskolan i Gävle/Avdelningen för elektronik, matematik och naturvetenskap

    Author : Hongzhe Li; [2015]
    Keywords : speech recognition; multilayer perceptron; spectral subtraction;

    Abstract : With the development of big data computing, the speech recognition has been popular for serving human’s life. However, when place the speech recognition system into noisy environments, the background noises greatly degrades the speech recognition system accuracy as it adds in unuseful information into the desired speech. READ MORE

  6. 5. Implementation and Evaluation of Spectral Subtraction with Minimum Statistics using WOLA and FFT Modulated Filter Banks

    University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Author : Peddi Srinivas Rao; Vallabhaneni Sreelatha; [2014]
    Keywords : Speech Enhancement; Filter Bank; Spectral Subtraction; Wiener Filtering; PESQ; DFT ; Master of Science Programme in Electrical Engineering with emphasis on Signal Processing Masterprogram i Elektroteknik med inriktning mot signalbehandling;

    Abstract : In communication system environment speech signal is corrupted due to presence of additive acoustic noise, so with this distortion the effective communication is degraded in terms of the quality and intelligibility of speech. Now present research is going how effectively acoustic noise can be eliminated without affecting the original speech quality, this tends to be our challenging in this current research thesis work. READ MORE