Sökning: "parametric coding"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden parametric coding.
Sammanfattning : thesis is about audio coding and improving flexibility thereof. Audio coding is used to reduce the bit rate needed to represent audio signals in digital format. When the available bit rate is low, parametric coding methods that use models to describe perceptually-important features of audio signals have shown their efficiency. LÄS MER
Sammanfattning : We study topics in source coding, and vector quantization (VQ) in particular. We approach VQ from two directions: a theoretical starting point based on high rate quantization theory, and a practical based on a database desription of the signal source. LÄS MER
Sammanfattning : Parkinson's disease (PD) is the second most common neurodegenerative disorder after Alzheimer's disease. Little is known about the etiology of PD. Although several PD genes are known, these are thought to be involved in only a small proportion of all PD cases. LÄS MER
Sammanfattning : Colorectal cancer is the third most commonly diagnosed cancer worldwide with an incidence rate of over 1 million cases per year. A genetic contribution has been suggested to be involved in around 35% of all colorectal cancer cases. LÄS MER
Sammanfattning : The focus of this thesis is on channel estimation in wireless communication systems that employ multiple antennas.The thesis is divided into two parts, whereof the first part addresses theproblem of parameter estimation of distributed sources. Due to, e.g. LÄS MER