Virtual Audio Test Bench

Traditional methods for making audio measurements involve several dedicated instruments; a sine generator to provide the excitation signal, a tracking filter/voltmeter to measure the output from the DUT, and finally a level recorder to provide a hard copy printout of the test results. SoundCheck provides the same functionality as these instruments but in a computerized or "virtual" environment.

SoundCheck's™ virtual test bench includes a Signal Generator, Multimeter, Oscilloscope, FFT Analyzer, and true Realtime Analyzer. The Signal Generator can operate as a standalone instrument or in conjunction with the other instruments. Sinusoidal signals as well as complex signals (white and pink noise, artificial speech, noise bursts, multi-tone, etc.) can be used as stimuli.

Manual Signal Generator

  • Sine
  • Pink and White Noise with user-defined frequency range
  • Wav file with RMS and Peak level calibration
  • Equalization using calibration measurements or any user-defined curve
  • Optional USB knob available for frequency and level control
 signal generator - virtual instrument
multimeter - virtual instrument

Multimeter

  • Average, Maximum, Minimum (RMS and Peak) levels with overload indication
  • Linear and Exponential averaging time (Fast, Slow, and user-defined)
  • A, B, C and user-defined weightings
  • Selectable Max/Min values with Pass/Fail indication

Real-Time Analyzer

  • 1/1, 1/3, 1/6, 1/12, 1/24 octave filters with true digital recursive filters
  • Average, Maximum, Minimum level with overload and real time indicators
  • A, B, and C and user-defined weighting filters
  • Complies with ANSI S1.11 and IEC 1260
  • Linear and Exponential averaging time (Fast, Slow, and user-defined)
 real time analyzer

Oscilloscope

  • Triggering
  • Delta cursor
  • Selectable graphical zoom
  • View spectrum of current waveform
Oscilloscope
spectrum analyzer

Spectrum Analyzer

  • FFT with arbitrary number of spectral lines (only limited by computer speed and memory)
  • Hanning, Hamming, Blackman-Harris, Exact Blackman, Blackman, Flat top, 4 Term Blackman-Harris, and 7 Term Blackman-Harris windows
  • Triggering
  • Complex or power averaging
  • Average, Maximum, Minimum level with overload and real time indicators
  • Selectable averaging time (Linear & Exponential)
  • A, B, C and user-defined weightings
  • Pure tone frequency and amplitude extraction
  • Delta and Harmonic cursor with THD readout
  • Selectable graphical zoom
  • View last waveform of current spectrum