This is an attempt to capture the evolution and history of Marshall amps, covering the period from the release of the JTM45 in 1962, up to the release of the JVM series in the late 2000s. This is work-in-progress, feel free to suggest corrections and ways to extend the diagram …

A very common debate topic between guitar enthusiasts is the impact of capacitor types on the perceived tone. There's at least two cohorts of guitar enthusiasts. In the first one, they believe that only the capacitance (its size, in Farads) of the capacitor has impact on the frequency response and …

With the release of Samsung Galaxy S21 we ended up with 3 generations of Galaxy phones at home, the S9, the S10+ and the more recent S21. I thought it would be a good idea to run a quick comparison regarding the camera performance of these three devices. Note that …

During the covid-Christmas period I got a Nikkor 24mm f/2.8 AF-D ultra-wide lens for my Nikon D610 Fx series full-frame camera. I got the lens from ebay for 138 GBP including postage which was a great price. For your information, this particular model of the lens was released …

In September 2018 I met my supervisor in Greece to decide the plan of action for the next phase. Since, at that point I was satisfying all the criteria of my university (most importantly the number of publications) we agreed that I should start writing my dissertation and have my …

During the last 18 months I spent a lot of time reading about Deep Learning and experimenting in various problem spaces where these techniques can be applied. As a big fan of cloud computing I relied mainly on AWS and their p2.xlarge spot instances to run my Deep Learning …

With this post I will attempt to describe the approach I followed in order to analyze 100GB of image data for the purpose of identifying sea lions in aerial photos as part of this kaggle competition. The reason why I found this competition an interesting challenge was threefold: was for …

This post is an attempt to provide an intuitive approach in understanding DFT's temporal and frequency resolution characteristics. We will implement everything from scratch using python in order to conduct an as straightforward as possible analysis with minimal dependencies. Discrete Fourier Transform (DFT) The forward discrete fourier transform (DFT): $$X_k …