Welcome to my personal website. My name is Alejandro Delgado Castro (I've got two surnames), an electronic engineer from San José, Costa Rica. I'm currently working as a full-time lecturer and researcher at the University of Costa Rica, where my principal area of interest is audio signal processing. I'm also a sound enthusiast who enjoys recording and listening to music, as well as restoring old audio recordings. Throughout my career I've been able to combine these two fascinating dimensions by designing computer algorithms for music and sound applications. The main purpose of this site is to share the most relevant outcomes of my research and to foster my professional interests. Below you will find links to my current research areas.
Estimating the fundamental frequencies of concurrent sources in audio mixtures is an important area of research in audio signal processing, particularly useful in Music Information Retrieval (MIR). Here, an iterative method is explored as an alternative to improve the level of accuracy.
The estimation and extraction of sounds comming from different sources in monoaural (single-channel) audio recordings is a challenging task. The strategy presented here explores the potential of using spectral filters to separate harmonic or nearly harmonic sources.
As a researcher, I'm also keen on exploring and taking part on projects in the following areas.