Linux Audio Production: Getting started with Jack and MIDI abram, November 10, 2022November 23, 2022 Last year, I posted this quick tutorial on the SMBA YouTube channel walking through the steps to use a MIDI controller with Jack using Xubuntu 20.04. I am posting it hear just for the sake of consistency and good housekeeping. Hopefully, I’ll get to make some more of these soon. Continue Reading
Arduino: Audio Frequency Generator abram, October 19, 2021November 23, 2022 Back in good ol’ 2012 (the year the world was supposed to end), I posted some code for a simple Arduino controlled low-frequency oscillator (LFO). It has made its way into some very interesting projects over the years, but recently I was asked in the comments if the code could… Continue Reading
sqrt() reverb… abram, February 17, 2013February 17, 2013 this was the final build before it shipped out. circuit is a simple MOSFET (BS170) driver stage followed by two JFET (J201) recovery stages. i’ve included a sound sample of a similar reverb i built later without the second recovery stage and clipping diodes. it makes for a much more… Continue Reading
Mellotronium revised… abram, February 20, 2012March 5, 2012 here’s an update on the new additions/approach to the Mellotronium. i’m attempting to redo the SD card routines once i get the functionality added. using the SD library just doesn’t work right when reading byte values at 8kHz. i’ve looked into the WaveHC library with the most success, but had… Continue Reading
Arduino: the 8-bit Mellotronium prototype abram, December 5, 2011March 6, 2012 i’ve been pretty Arduino obsessed over the past month. i got in my head this idea about building a midi-controlled digital sampler that uses SD cards for storage after thumbing through the Arduino Cookbook and have finally started to make some headway on the project. there were some major obstacle… Continue Reading
LM386 Square-wave Oscillator abram, June 13, 2011August 31, 2017 Here’s a small LM386-based square-wave oscillator built from the following schematic. I replaced the 30k resistor with a 50k Potentiometer from my stash of parts which then, of course, acts as a pitch controller. The following audio is some track recordings made in Ableton 8.0 with a little filter on… Continue Reading
External audio with USB 1.1 and Gentoo Linux PPC… abram, May 29, 2011May 29, 2011 In the event that anyone decides to use a junked iBook in a Linux environment, I’m hoping that this article might save someone a lot of experimentation. The Problem: Started having trouble getting packet information through Soundmodem after a system upgrade to Kernel version 2.6.36-gentoo-r8. I began to investigate the… Continue Reading
LightBox prototype abram, November 3, 2010November 3, 2010 here’s a small battery-powered guitar amp that i’ve constructed from reused parts. the housing is a busted computer power supply (some of which is in the No. 5) as well. i’ve got several options for this little fellow in mind, but, for now, it’s a tiny amp with a mean… Continue Reading
Fostex Model 80: Link to Service Manual abram, September 23, 2009November 23, 2009 Fostex M80 Continue Reading
the first of four… abram, June 18, 2009June 22, 2009 This was my first attempt at building the circuit on the PC board. Unfortunately, I think I’m going to have to get a different board since this one isn’t quite big enough with two opamps. Soldering it is also a bitch considering it’s tiny and my iron tip isn’t as… Continue Reading