Facilities
Home Listening Crews

 

Dynastat has available the laboratory and computational facilities needed to fully meet the needs of its clients for services and research in speech perception, voice communications and related fields.

 
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Network of Pentium computer systems operating under Microsoft NT with various input-output peripheral devices and various software packages for editing and analyzing speech files and conducting statistical analyses

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Network of IBM-compatible SX386 microcomputers for automated collection of listener responses

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DAT-Link+ Digital Audio Interface hardware for digital recording and playback of speech files

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Atlanta Signal Processors, Inc. (ASPI) ELF31 DSP system with DFDP3/plus for digital filtering and signal analysis, DSP SPOX operating system, and Multimedia Evaluation Toolkit for real time implementation of a large number of speech algorithms

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Panasonic Digital Audio Tape (DAT) decks

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Sony Digital Audio Processors (PCM-501ES) using Beta or VHS video recorder

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Tracoustics and Acoustic Systems sound-isolation rooms

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Audio distribution systems for ten and six listening stations

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Multi-channel analog recording and playback equipment

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Filters (digital and analog), mixers, noise generators, electronic switches, microphones, preamplifiers, and various other laboratory and test equipment

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Brel & Kjr artificial ear, measuring amplifier, measuring microphone, precision preamplifier and calibrator for regular measurements and calibration of recording and playback environments and systems

In addition to its hardware facilities, Dynastat has the following items for purposes of speech research and services:

An extensive library of tape recorded speech materials (Diagnostic Rhyme Test materials, isolated sentences and continuous prose) involving a sample of more than 120 male and female speakers. Also included are recordings by 9 male and 9 female speakers of speech materials used for purposes of the Diagnostic Acceptability Measure (DAM), Mean Opinion Score (MOS), Degradation Mean Opinion Score (DMOS), Diagnostic Alliteration Test (DALT), Diagnostic Discrimination Test (DDT), Modified Rhyme Test (MRT), and Harvard PB word lists.