Used in combination with DIRAC 6 room acoustics software, Echo Speech Source Type 4720 enables users to perform speech intelligibility measurements, which meet standards IEC 60268-16 and ISO 3382-3. Echo speech source works as standalone tool with 5 in-built calibrated signals, which are used by DIRAC software to calculate range of speech intelligibility parameters, such as STI, STIPA, and RASTI based on impulse response of room being measured.
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