Hej,
Jag tänkte lägga upp min exjobbsrapport som jag skrev för ett år sen, jag tror den kan vara intressant läsning för en del här.
Title: Assessment of Nonlinearities in Loudspeakers, Volume dependent equalization
Abstract
Digital room correction of loudspeakers has become popular over the latest years, yielding great gains in sound quality in applications ranging from home cinemas and cars to audiophile HiFi-systems. However, loudspeaker nonlinear distortion is often not taken into account by room correction products and this thesis investigates how distortion can be assessed. The theory of how distortion is produced in loudspeakers and the criteria that governs whether it is perceptible or not is reviewed. Two Matlab graphical user interfaces were developed, one for measuring distortion in loudspeakers and one implementing an algorithm that varies the low frequency cut-off of a loudspeaker depending on the volume level, thus increasing the bass extension possible with small loudspeakers. This method gives good subjective results with small loudspeakers.
Länk: pdf
Mvh Viktor
Skall bli kul att läsa.