Essays about: "white noise"

Showing result 1 - 5 of 99 essays containing the words white noise.

  1. 1. Time-based Key for Coverless Audio Steganography: A Proposed Behavioral Method to Increase Capacity

    University essay from Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Author : John Alanko Öberg; Carl Svensson; [2023]
    Keywords : Coverless audio steganography; information hiding; covert communication; effective capacity; behavioral; Täcklös ljudsteganografi; informationsdöljning; hemlig kommunikation; effektiv kapacitet; beteendemässig;

    Abstract : Background. Coverless steganography is a relatively unexplored area of steganography where the message is not embedded into a cover media. Instead the message is derived from one or several properties already existing in the carrier media. This renders steganalysis methods used for traditional steganography useless. READ MORE

  3. 2. On modelling OMXS30 stocks - comparison between ARMA models and neural networks

    University essay from Uppsala universitet/Matematiska institutionen

    Author : Irina Zarankina; [2023]
    Keywords : ARMA; ARIMA; LSTM; time series; statistics;

    Abstract : This thesis compares the results of the performance of the statistical Autoregressive integrated moving average (ARIMA) model and the neural network Long short-term model (LSTM) on a data set, which represents a market index. Both models are used to predict monthly, daily, and minute close prices of the OMX Stockholm 30 Index. READ MORE

  4. 3. Behavioral response of reindeer (Rangifer tarandus) to acoustic stimuli

    University essay from SLU/Dept. of Ecology

    Author : Johanna Börs; [2023]
    Keywords : reindeer; Rangifer tarandus; acoustic stimuli; behavioral response; flight response; induced fear;

    Abstract : Scare systems based on acoustic stimuli have been tested on several ungulates in recent years. The aim has been to investigate whether the method can be useful in situations where the animals must quickly be displaced from a specific site, for example, to prevent wildlife accidents. READ MORE

  5. 4. Gunshot Detection and Direction of Arrival Estimation Using Machine Learning and Received Signal Power

    University essay from Linköpings universitet/Institutionen för systemteknik

    Author : David Grahn; Timothy Cooper; [2023]
    Keywords : Direction of arrival; Machine Learning; Received signal power; Project Ngulia; Gunshot Detection; Poaching;

    Abstract : Poaching is a persistent issue that threatens many of earth’s species including therhino. The methods used by poachers are varied, but many use guns to carry outtheir illegal activities. Gunfire is extremely loud and can be heard for kilometres. READ MORE

  6. 5. Generation of Synthetic White Blood Cell Images Using Denoising Diffusion

    University essay from Lunds universitet/Matematik LTH

    Author : Louise Zettergren; Fanny Nilsson; [2023]
    Keywords : Mathematics and Statistics;

    Abstract : CellaVision’s digital hematology systems are designed to analyze blood and pre-classify different types of blood cells. Some abnormal white blood cells are rare, which can cause imbalanced datasets. This can lead to a decrease in pre- classification performance and a need to carry out more time-consuming data gathering. READ MORE