Digital Signal Processing related projects and articles
Electret microphones are cheap and extremely useful for DIY audio projects. One of their drawbacks, as with many microphones, is their very low voltage output level. The easy solution is to build a simple microphone preamplifer that boosts the signal to a much higher level.
This article continues my newly acquired interest in implementing digital signal processing algorithms on the Arduino GIGA R1 by showing how to implement a tremolo effect algorithm in software.
This article shows how to approximate the behaviour of a regular diode in a mathematical equation and how to subsequently implement the behaviour in software. The DSP algorithm can be modified to implement different topologies, such as single diode clipping, dual diode symmetrical soft clipping or asymmetrical clipping.
This article shows a basic sketch outline to use the Arduino GIGA R1 WiFi for audio DSP experiments. The sketch presented makes use of the Advanced Analog Library to implement a simple audio loopback device.