Essays about: "SNR."

Showing result 16 - 20 of 215 essays containing the word SNR..

  1. 16. Towards a Nuanced Evaluation of Voice Activity Detection Systems : An Examination of Metrics, Sampling Rates and Noise with Deep Learning

    University essay from Linköpings universitet/Institutionen för datavetenskap

    Author : Ludvig Joborn; Mattias Beming; [2022]
    Keywords : voice activity detection; VAD; deep learning; machine learning; ML; artificial intelligence; AI; convolutional neural network; CNN; deep neural network; DNN; sound event detection; SED; mel spectrogram; audio processing; polyphonic sound detection score; PSDS; signal processing; signal to noise ratio; SNR; recurrent convolutional residual neural network; RCRNN; sampling rate; Gaussian noise;

    Abstract : Recently, Deep Learning has revolutionized many fields, where one such area is Voice Activity Detection (VAD). This is of great interest to sectors of society concerned with detecting speech in sound signals. One such sector is the police, where criminal investigations regularly involve analysis of audio material. READ MORE

  3. 17. Faster than Nyquist Signaling with Spatial Coupling

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

    Author : Haoran Liu; Lingwei Zhang; [2022]
    Keywords : Technology and Engineering;

    Abstract : The emergence of the Faster-Than-Nyquist signaling (FTN) technology has im- proved the tight spectrum resources by compressing the transmission interval between adjacent pulses. In a natural environment, data transmission via a wire- less medium and through multi-path, at a high data rate, the leakage of these paths among symbols can cause severe inter-symbol interference (ISI). READ MORE

  4. 18. Antenna Options for High Altitude IMT Base Stations (HIBS) in Cellular Networks

    University essay from Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Author : Harald Magnusson; [2022]
    Keywords : High altitude IMT Base Station HIBS ; High Altitude Platform Station HAPS ; Link Feasibility; Coverage Feasibility; Phased Array Antenna; Parabolic Reflector Antenna;

    Abstract : This thesis is the result of a collaboration between Ericsson AB and Luleå University of Technology. A feasibility study has been conducted to investigate antenna options for the HIBS access link. The study contains two parts. Firstly, a link budget investigating the gain required from the antenna. READ MORE

  5. 19. Validation of a method utilising MR images for dose planning of prostate cancer treatment : Validation of new coil technology applied on the pelvis region of healthy volunteers

    University essay from Linköpings universitet/Institutionen för hälsa, medicin och vård

    Author : Tova Rung; [2022]
    Keywords : Synthetic CT; Air coil;

    Abstract : By generating a synthetic CT image (sCT) directly from the MRI, the electron density can be calculated, and the CT examination can be excluded from the patient flow minimizing the risk of uncertainties in the registration. Basing the radiation treatment process solely on MR images is called MRI-only and is beneficial for the patient as it can provide more accurate radiation treatment than the standardised treatment with fewer CT examinations and possibly a more cost-effective radiation treatment process. READ MORE

  6. 20. Current measurements of low-power battery driven devices

    University essay from Uppsala universitet/Signaler och system

    Author : Marcus Wahlberg; [2022]
    Keywords : Current meter; current measurement; shunt resistor; auto-range; current-range;

    Abstract : A current meter has been designed, intended for surveillance of low-power battery driven devices with a large dynamic range in their current consumption. Among such devices may, for example, be nodes in a wireless sensor network (WSN). READ MORE