Signal Processing – Deeptronic

Build Your Own Superfast Polyphonic Octaver Pedal with DT-FOG Module

October 12, 2023 Hamuro Leave a comment

Introduction to DT-FOG Module Unlike other polyphonic octaver pedals those have significant latency, DT-FOG module produce octave and sub-octave with almost imperceptible latency. The DT-FOG module processes transient and non-transient signal components separately. This separation enable the transient processor to have superfast latency as low as 1/100 seconds (10 milliseconds), and the non-transient processor to have a good frequency resolution […]

Category: Electronic Circuit Design Tags: DSP, Guitar Effect, Guitar Pedal, Music Circuit, Signal Processing

DIY Guitar Vocoder Pedal Using BWE-VO3 Module and GBPM-2 PCB

June 4, 2022 Hamuro Leave a comment

WARNING! As of August 30th 2023, BWE-VO3 module is discontinued (obsolete), replaced by DT-VO4 vocoder module. Refer to the following documents to build DT-VO4 Vocoder: DT-VO4 Vocoder Module User Manual DT-VO4 Application Note (BUILDING GUITAR VOCODER PEDAL USING DT-VO4 MODULE AND BGPM-2 PCB) Introduction BWE-VO3 is a vocoder effect module designed for guitar effect pedal application, based on digital simulation […]

Category: Electronic Circuit Design Tags: Digital Circuit, Digital Filter, Guitar Effect, Guitar Pedal, Music Circuit, Signal Processing, Vocoder

DIY Reverb Pedal Circuit: Spring-Hall Reverb with PT2399 IC

May 18, 2019 Hamuro 36 comments

Introduction to Reverberation Before getting into the design of DIY reverb pedal circuit, lets see the concept of reverberation first. Real reverberation happens in a performance chamber when the walls and every object inside reflects the sound back and forth. As the sound bounces back and forth in three dimensional space, the reflections creates more and more complex pattern. The […]

Category: Electronic Circuit Design Tags: Audio Effect, Guitar Effect, Guitar Pedal, Music Circuit, Reverb, Signal Processing

High Voltage (220VAC) Bass-Treble Automatic Disco Light Controller

October 7, 2015 Hamuro One comment

The previous music-controlled disco light controllers, the audio-controlled disco light controller circuit and hi-lo (treble-bass) disco light controller have some features and drawbacks. The first one features high voltage drive, enable the circuit to drive 220VAC lamps, and the drawback is that it has only one way (single channel control). In the other side, the second version has two-way (bass […]

Category: Electronic Circuit Design Tags: Automatic Control, Disco Light, Lighting Circuit, Music Circuit, Signal Processing

Automatic Wah/Quack Effect Circuit with Attack and Decay Control

October 1, 2015 Hamuro 4 comments

To get various characteristic of an auto wah/quack effect, we need a flexible control of the envelope detection characteristic. Some playing styles need slow attack but fast decay, but some others don’t. Employing the envelope detector circuit presented in our previous article [Ref 1], but with some modification to make it single supply operation. Here we present the improvement of […]

Category: Electronic Circuit Design Tags: Audio, Audio Effect, Filter, Guitar Effect, Music Circuit, Signal Processing

Envelope Detector Circuit with Separate Attack/Rise and Decay/Release Time Settings

September 30, 2015 Hamuro 9 comments

Introduction to Envelope Detector Circuit Envelope detector circuit is used to get the amplitude profile of a signal. Some important properties of an envelope detector are attack or rise time and decay or release time. In the Figure 1, a signal is plotted in blue, and the detected envelope is plotted in black. Since it employs capacitor for filtering inside […]

Category: Electronic Circuit Design Tags: Audio, Envelope Detector, Signal Processing

Automatic Wah/Quack Effect Using LED+LDR Controlled Band-Pass Filter

September 26, 2015 Hamuro Leave a comment

Introduction to Automatic Wah/Quack Effect Automatic wah/quack effect gives a similar effect with the manual version (reference [1]), but without the need of any pedal to manually control the frequency/tonal sweep. This automation is made possible by detecting the envelope signal of the instruments audio signal, and use it to control the filter to produce center frequency sweep, producing audio […]

Category: Electronic Circuit Design Tags: Audio, Audio Effect, Filter, Music Circuit, Signal Processing

Inductor-less Wah/Crying Baby/Quack Effect Using Operational Amplifier

September 22, 2015 Hamuro 2 comments

A type of guitar effect pedal that produce “wah”- or “quack”-like sound, which is similar to the crying sound of a baby is called wah-wah pedal, or just wah pedal. The effect is produced by filtering the musical instrument through a band-pass filter, which the center of its peak frequency is swept from low to high, mimicking audio tonal transition […]

Category: Electronic Circuit Design Tags: Audio, Audio Effect, Filter, Music Circuit, Signal Processing

Fold-Back Distortion: Producing “Phew” Effect Using Software and Hardware (Analog Electronic Circuit)

September 17, 2015 Hamuro Leave a comment

Introduction: What is Fold-Back Distortion? I was introduced to a term of “fold-back distortion” in the past by an article from an old book which I forget what the title is, but the book contains schematic diagrams of many circuits collected from old publication of Elektor magazine (www.elektor.com). The article presents the circuit’s schematic diagram and how it works. I […]

Category: Electronic Circuit Design, Software Design Tags: Audio, Audio Effect, Distortion Effect, Guitar Effect, Music Circuit, Signal Processing

Symmetric Distortion Using Clipper Diodes for Guitar Effect

September 2, 2015 Hamuro Leave a comment

Introduction While almost every audio equipments pay whatever it cost to minimize distortion, this kind of device does the opposite: distortion effect for electric guitar. Many methods have been implemented in producing a distorted signal from electric guitar pick-up, such as over-driven vacuum tube, solid-state (transistor), or diode clipper. The simplest form is passive diode clipper, which is implemented as […]

Category: Electronic Circuit Design Tags: Distortion Effect, Guitar Effect, Music Circuit, Signal Processing

Far Field Noise Cancelling Microphone Pre-Amp Employs Standard Op-Amp

April 23, 2014 Hamuro Leave a comment

The microphone pre-amplifier circuit described here make the microphone sensitive to a sound come from very close source, and insensitive to any sound coming from far sources. This works even when the far sound is very loud. The main application of this circuit is in telecommunication system like in mobile phones, where the microphone should pick a clear speech even […]

Category: Electronic Circuit Design Tags: Audio, Microphone, Pre Amplifier, Signal Processing

Music Controlled Disco Light Circuit with Automatic Level Control

March 27, 2014 Hamuro Leave a comment

Introduction to Automatic Disco Light Control Simple audio or music controlled disco light uses comparator to sense the beat of a music signal, but this comparator has a reference point that should be calibrated according to the music signal volume. It’s easy if we have a light jockey to take the duty of controlling all the lighting, but it’s not […]

Category: Electronic Circuit Design Tags: Audio, Disco Light, Lighting Circuit, Music Circuit, Signal Processing

Tag: Signal Processing