• Corpus ID: 18341906

WAVE DIGITAL MODELING OF THE OUTPUT CHAIN OF A VACUUM-TUBE AMPLIFIER

@inproceedings{Pakarinen2009WAVEDM,
  title={WAVE DIGITAL MODELING OF THE OUTPUT CHAIN OF A VACUUM-TUBE AMPLIFIER},
  author={Jyri Tapani Pakarinen and Miikka Tikander and Matti Karjalainen},
  year={2009}
}
This article introduces a physics-based real-time model of the output chain of a vacuum-tube amplifier. This output chain consists of a single-ended triode power amplifier stage, output transformer, and a loudspeaker. The simulation algorithm uses wave digital filters in digitizing the physical electric, mechanic, and acoustic subsystems. New simulation models for the output transformer and loudspeaker are presented. The resulting real-time model of the output chain allows any of the physical… 

Figures and Tables from this paper

Enhanced Wave Digital Triode Model for Real-Time Tube Amplifier Emulation

A physical model of a tube stage circuit using wave digital filters that enables the simulation of interstage coupling and blocking distortion and is an extension of the wave digital tube presented in Wave digital simulation of a vacuum-tube amplifier.

REAL-TIME WAVE DIGITAL SIMULATION OF CASCADED VACUUM TUBE AMPLIFIERS USING MODIFIED BLOCKWISE METHOD

Vacuum tube amplifiers, known for their acclaimed distortion characteristics, are still widely used in hi-fi audio devices. However, bulky, fragile and power-consuming vacuum tube devices have also

Real-time simulation of a guitar power amplifier

This paper deals with the real time simulation of a class A single ended guitar power amplifier. Power tubes and triode models are compared, based on Norman Koren's work. Beam tetrodes and pentodes

Simulation of a “Giannini True Reverber” vacuum-tube guitar amplifier by using wave digital filters

The objective of this work is to simulate a tube guitar amplifier, the Giannini True Reverber designed by Carlos Alberto Lopes in the nineteen sixties. The nonlinear “overdrive” characteristics of

Automated Physical Modeling of Nonlinear Audio Circuits for Real-Time Audio Effects—Part II: BJT and Vacuum Tube Examples

  • D. T. Yeh
  • Physics
    IEEE Transactions on Audio, Speech, and Language Processing
  • 2012
The results suggest the use of function approximation to represent the solved system nonlinearity of the K-method and invite future work along these lines.

Real-Time Audio Transformer Emulation for Virtual Tube Amplifiers

This paper proposes to simulate the audio transformer using a wave digital filter model, which is based on the gyrator-capacitor analogy, and shows that these practical transformer designs introduce distortion at low frequencies only, below about 100  Hz for the Fender and 30 Hz for the Hammond transformer.

New Family of Wave-Digital Triode Models

A new family of wave-digital vacuum tube triode models is presented. These models are inspired by the triode model by Cardarilli , which provides realistic simulation of the triode's transconductance

Emulation of Operational Amplifiers and Diodes in Audio Distortion Circuits

A new model for an ideal operational amplifier that does not include implicit equations and is thus suitable for implementation using wave digital filters (WDFs) is introduced and a novel WDF model for a diode is proposed using the Lambert W function.

REAL-TIME GUITAR TUBE AMPLIFIER SIMULATION USING AN APPROXIMATION OF DIFFERENTIAL EQUATIONS

Digital simulation of guitar tube amplifiers is still an opened topic. The efficient implementation of several parts of the guitar amplifier is presented in this paper. This implementation is based

DISCRETIZATION OF PARAMETRIC ANALOG CIRCUITS FOR REAL-TIME SIMULATIONS

It is shown, that the computational costs in case of recalculation of the coefficients are reduced compared to the related DK-method, due to minimized matrix formulations.

References

SHOWING 1-10 OF 15 REFERENCES

Wave Digital Simulation of a Vacuum-Tube Amplifier

  • M. KarjalainenJ. Pakarinen
  • Physics, Engineering
    2006 IEEE International Conference on Acoustics Speech and Signal Processing Proceedings
  • 2006
Wave digital filters (WDFs) can be applied to efficient real-time simulation of vacuum-tube amplifier stages, typical in professional guitar amplifiers, which pose nonlinear behavior for desired distortion effects.

A Review of Digital Techniques for Modeling Vacuum-Tube Guitar Amplifiers

The next step in the evolution of tube-amplifier emulation has been to simulate the amplifiers using computers and digital signal processors (DSP).

Discrete-time modelling of musical instruments

Physical modelling techniques that can be used for simulating musical instruments are described, including some nonlinear and time-varying models and new results on the digital waveguide modelling of a nonlinear string.

Simultaneous Measurement of Impulse Response and Distortion with a Swept-Sine Technique

A novel measurement technique of the transfer function of weakly not-linear, approximately time-invariant systems is presented, based on an exponentially-swept sine signal, applicable to loudspeakers and other audio components, but also to room acoustics measurements.

Wave digital filters: Theory and practice

Wave digital filters (WDFs) are modeled after classical filters, preferably in lattice or ladder configurations or generalizations thereof. They have very good properties concerning coefficient

Digital Signal Processing: Principles, Algorithms, and Applications

This paper presents a meta-analysis of the Z-Transform and its application to the Analysis of LTI Systems, and its properties and applications, as well as some of the algorithms used in this analysis.

SwitcherCAD III / LTSpice Users Guide

  • 2009, Available online at ltspice.linear. com/software/scad3.pdf, accessed 19 February 2009.
  • 2009

SwitcherCAD III / LTSpice Users Guide Available online at ltspice.linear. com/software/scad3.pdf, accessed 19

  • Linear Technology
  • 2009

A review on digital guitar tube amplifier modeling techniques

  • Computer Music J
  • 2009