50 years ago: The WORLD’s first computer music player was completed in Finland 21 January 1971. The machine was developed by inventor Erkki Kurrenniemi with the help of a Sitra grant. Historia|HS 50 vuotta sitten 21.1.1971 Suomalainen teki sävellystietokoneen article says: The music machine Dimi is a leading invention in its field, it will also →
Fiber maybe for some fastest backbone runs and longest runs properly protected and handled with proper care. But in many applications the main media is copper cable where the media selection is between unshielded (UTP) and shielded (STP) varieties. I have some copper comments on UTP vs STP. STP is nice in locations where good →
This is a story of a a video digitizing circuit I built early 1990′s. It kind of worked, but was not practical then and much less useful nowadays. It is an interesting how simple circuit could be used for converting analogue composite video signal to digital for computer processing. This is the story of Dirt →
I used to use some external cameras like microscope and endoscope connected to my Android phone with OTG cable. Google Android documentation says that many standard USB cameras should generally work with Android: The Android platform supports the use of plug-and-play USB cameras (that is, webcams) using the standard Android Camera2 API and the camera →
Here are two articles that could be interesting and entertaining to read. In this first article the writer uses audio analyzing tools to to debunk spurious claims made by audiophiles, HiFi journalists, and the high-end audio industry about the quality of their products. This article covers using audio analyzers and also using SDR software to →
Signal processing is an electrical engineering subfield that focuses on analysing, modifying and synthesizing signals such as sound, images and biological measurements. Electronic signal processing was first revolutionized by the MOSFET and then single-chip digital signal processor (DSP). Digital signal processing is the processing of digitized discrete-time sampled signals. Processing is done by general-purpose computers →
In this article I take a look at TU04 USB audio mixer, also known with many other names names like Teyun A4. This mixer can be found on many discount sites like AliExpress, Banggood, DHgate and Wish.com at low price ($30-50). For the price this audio mixer seems to offer quite a lot of features: →
Cyberpunk 2020! Omg lasers directly into the retina! Lol! Whew. I think I’ll skip this one, but it is super rad. Check out this article: Bosch Gets Smartglasses Right With Tiny Eyeball Lasers A tiny laser array paints images directly onto your retina https://spectrum.ieee.org/tech-talk/consumer-electronics/gadgets/bosch-ar-smartglasses-tiny-eyeball-lasers “Lightweight and slim, with a completely transparent display that’s brightly visible →
There is a quite new electrical safety standard you need to know: IEC 62368-1. If you are working with electronics design, you need to notify this new standard. IEC 62368 is an entirely new product safety concept: it isn’t a merger of existing standards, but it does cover the older standards IEC 60065 and IEC →
I have earlier posted about Audio trends and snake oil. What annoyed then and still today in marketing and media that too often today then talking on hi-fi, science is replaced by bizarre belief structures and marketing fluff. It seems that there too many snake oil rubbish products marketed in the name of hifi. It →