You are here: Our Products / R&D System / Modules / Auralization

Auralization (AUR)

The module "Speaker Auralization" simulates the acoustic output of a loudspeaker (woofer, tweeter, system) in the far field on the basis of the identified large-signal model processed by the Distortion Analyzer in real time. Before processing any external input signal supplied to terminal IN1, the linear, nonlinear and thermal parameters of the loudspeaker are imported from the module "Large Signal Identification". An additional linear channel can be activated via a crossover system to transfer an audio signal with full band-width. The nonlinear and thermal effects of the transducer are represented by the states (displacement x(t), current I(t), temperature Tv(t),etc.) and parameter variations (Re(t), Qes(t)) recorded in the history file. The data is stored in a data base and allow visualization and interpretation. The dynamic generation of a DC part in the displacement, amplitude compression and jumping effects can be investigated in detail. The identified model allows to measure the nonlinear distortion dBl, dC, dL(x), dL(i) separated according to the generating nonlinearity (force factor, compliance and inductance). In the simulated sound pressure signal p(t), the linear component plin(t) and each nonlinear component pBl(x), pL(x), pC(x), pL(i) can be attenuated separately to modify the transfer response of the woofer and to investigate the impact on the subjective listening impression. Systematic listening tests can be performed by using the blind A/B switch.

Auralization
  • Digital simulation in real time
  • Electro-dynamical transducer (woofer, tweeter + enclosure)
  • Arbitrary input (music, test signals)
  • Simulates radiated sound in far field
  • Simulates transducer states permanently
  • Measures distortion components on-line
  • Adjustable signal distortion
  • Provides blind or open A/B-comparison
  • Investigates nonlinear behavior
  • Allows non-destructive testing
  • Explores effect of each nonlinearity
  • Finds dominant source of distortion
  • Assesses sound quality
  • Shows optimal performance/ cost ratio
  • Saves time and cost in prototyping
  • Substitutes time-consuming listening tests
  • Training of listeners

Specification

Requirements

Example

Auralization

Template coming with the AUR module:

Name of the Template

Application

AUR auralization

Real-time auralization of the large signal performance

Read more

Paper: “Speaker Auralization - Subjective Evaluation of Nonlinear Distortion”


To top