B&K Type 4720 Loudspeaker

Description

Echo Speech Sound Source outputs calibrated signals for measuring a range of speech intelligibility parameters in conjunction with DIRAC 6. The received signal is picked up by a microphone and analyzed in DIRAC, which calculates an accurate qualification of the speech intelligibility through various parameters such as the Speech Transmission Index (STI).

USE SCENARIOS

  • Speech intelligibility measurements with DIRAC
  • Measurements including background noise

KEY FEATURES:

  • Wireless sound source for DIRAC 6
  • Fully calibrated sound levels and spectra
  • Mouth directivity
  • Five built-in stimulus signals
  • Intermittent stimulus accounting for background noise
  • External input and output
  • Compact and lightweight (10x10x17 cm, 1 kg)
  • Mounts on standard tripods
  • Battery powered
  • External power supply included