Enhanced Modelling of Guitar Distortion

Date

2015-05-19

Author

Zeki, Engin
Çiloğlu, Tolga

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

27
views

0
downloads

Digital audio effects are used by many electric guitar players. These effects help players to find their desired tones and sounds. For the modelling of main nonlinear guitar effects, distortion and overdrive, this paper investigates current methods of static modelling and dynamic nonlinear state space solutions. After discussion of previous models, this paper introduces a new method of distortion modelling with system identification called Enhanced Modelling of Guitar Distortion. Enhanced Modelling of Guitar Distortion algorithm will use adaptive network based system identification method ANFIS (Adaptive-Network-Based Fuzzy Inference System). ANFIS is used as a system identification tool in Enhanced Modelling of Guitar Distortion algorithm. This algorithm takes the guitar output signal and pre-amplifies the input with 12AX7 vacuum tube amplifier simulation model to obtain clean channel. ANFIS System Identification block is trained using desired distortion effect input output pair. This training and learning results into a ANFIS structure that can be used for processing future inputs. Using clean channel output as an input to the ANFIS structure, lead channel output is obtained. Real-time implementations of distortion and overdrive will be done using C/C++/C# software languages. Using different distortion effect input output pair, different models of distortion effects can be obtained.

Subject Keywords

Guitar, Audio, Guitar audio effects, Audio signal processing, Nonlinear signal processing, ANFIS, Distortion, Over-drive, System identification

URI

https://hdl.handle.net/11511/54499

Conference Name

23nd Signal Processing and Communications Applications Conference (SIU)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Digital modelling of guitar audio effects / Zeki, Engin; Çiloğlu, Tolga; Department of Electrical and Electronics Engineering (2015) Digital audio effects are used by many electric guitar players. These effects help players to find their desired tones and sounds. Digital audio workstations (DAW) and Virtual studio technologies (VST) advance the development of guitar audio effects softwares. The aim of this thesis is to implement main linear guitar effects (delay, reverb, wah-wah, flanger) real-time and enhance the main nonlinear guitar effects (distortion, overdrive) using system identification methods. After the verification of the effe...
Panoramic recording and reproduction of multichannel audio using a circular microphone array Hacıhabiboğlu, Hüseyin (2009-10-18) Multichannel audio reproduction generally suffers from one or both of the following problems: i) the recorded audio has to be artificially manipulated to provide the necessary spatial cues, which reduces the consistency of the reproduced sound field with the actual one, and ii) reproduction is not panoramic, which degrades realism when the listener is not seated in a desired ideal position facing the center channel. A recording method using a circularly symmetric array of differential microphones, and a rep...
Comparison of PWM and PFM induction drives ID in,egarding audible noise and vibration for household applications Ertan, Hulusi Bülent (2004-11-01) This paper is aimed at comparing the performance of pulse frequency modulation (PFM) and pulsewidth modulation (PWM) techniques regarding audible noise generated from inverter-driven induction motors. For the purpose of illustrating the performance of the two modulation techniques, a drive developed for washing machine applications is considered. First, the measured and simulated harmonic content of this inverter is compared with the measured harmonic spectrum of a three-phase input-output commercial variab...
Multi-channel thin film piezoelectric acoustic transducer for cochlear implant applications YÜKSEL, MUHAMMED BERAT; İlik, Bedirhan; Koyuncuoğlu, Aziz; Külah, Haluk (2019-10-27) This paper presents a multi-channel piezoelectric acoustic transducer that is working within the audible frequency band (250- 5500 Hz). The transducer consists of eight cantilevers with thin film PLD-PZT piezoelectric layers. The transducer is well suited to be implanted in middle ear cavity with an active volume of 5x5x0.6 mm(3) and mass of 4.8 mg excluding the test frame. Finite Element Method (FEM) is used for modelling cantilever resonance frequencies and piezoelectric outputs. This model and shaker-tab...
Numerical and experimental analysis of dissipative silencer coupled with quarter wave tube Dinçer, Ayşe; Çalışkan, Mehmet; Department of Mechanical Engineering (2013) The study deals with investigation of acoustical characteristics of a hybrid silencer made up of a dissipative silencer and a quarter wave tube resonator. The theoretical and experimental analyses are performed to define acoustic characteristics of a simple expansion chamber and reactive perforated silencer, while the numerical and experimental solutions are presented for dissipative perforated silencer. Furthermore, the experiments and numerical solutions are extended to the hybrid silencer to find the eff...

Citation Formats

E. Zeki and T. Çiloğlu, “Enhanced Modelling of Guitar Distortion,” presented at the 23nd Signal Processing and Communications Applications Conference (SIU), Inonu Univ, Malatya, TURKEY, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54499.