In this paper, two optimal filter designs for fundamental frequency estimation are presented with the first being based on a filterbank and the second on a single filter. We show that the two designs are related in a simple manner and result in the same residual when used for cancelling out the harmonics. We propose to use this residual for estimating the number of harmonics by combining a noise v

Popular Abstract in Swedish Eld har fascinerat människan i alla tider. Att sitta och värma sig vid en lägereld, sjunga sånger eller bara titta på hur elden rör sig är något de flesta har upplevt. Hur många har egentligen funderat på var värmen kommer ifrån, hur den gula färgen uppstår eller vad eld egentligen består av? Några av frågorna finns det nu svar på, men fortfarande finns det mycket att uThe work presented in this thesis covers how laser-induced fluorescence (LIF) and photofragmentation laser-induced fluorescence (PF-LIF) can be used to determine quantitative species concentrations in different combustion environments. To attain species concentrations with LIF it is of vital importance to investigate the influence of collisional quenching on the fluorescence signal strength, which

An important performance measure of a plant is the plant-availability. The higher availability the better, since a high availability implies a possibility for a large production volume and thereby an increased profit for the company. One way of increasing the plant-availability is by eliminating, or minimizing the effect of disturbances. The cause of a disturbance can be personnel, material or equ

New interactive information and communication technology (ICT) has opened up new possibilities in the field of distance education. The traditional distance education organisations are challenged by conventional universities who have developed into dual mode institutions using interactive ICT. This challenge from conventional universities may also involve a conceptual challenge - from distribution

Traditionally, liquid food processing equipment has been designed and engineered from a static perspective, where it has been taken for granted that dynamic behaviour easily could be handled by “add on” of control equipment such as sensors and computers with control programs including control loops. However, as production demands, e.g. mixing accuracy, are escalated, this approach fails, and the i

It is disclosed a circuit for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the blood flow within the filtering unit to be kept unchanged even following an inverted circulation in the patient-side artery and vein