SYSid - short for system identification - is a complete, affordable and flexible test and measurement instrument for characterizing any system operating within the audio band. SYSid delivers the capabilities of systems costing many times its price, and performs traditionally time-consuming tasks quickly, without sacrificing accuracy or ease of use.  SYSid runs on a proprietary 16-bit, two-channel data acquisition and signal processing PCIMA II compatible card.  PCI and ISA bus adaptors are optionally available.

SYSid 7 brings unprecedented functionality to acoustic test and measurement. New DSP board capabilities over the original ISA bus full-length version include tracking anti-alising filters, programmable gain and attenuation, ultra-high 128,000 point FFT resolution, easier and faster installation into a wider range of computers, and operation under Windows 98 and NT.

• Superior acoustic analysis tool for transducer design

• Quality Control functions

• Thiele-Small parameter measurements.

• User-defined stimuli in addition to chirp, log chirp, MLS, sinusoidal or impulse

• Stimuli are provided for speaker rub / buzz testing and spectral contamination.

• Harmonic distortion – 2nd, 3rd and THD + noise, IM distortion vs. level

• Post processing capabilities include reverse time energy (continuous, octave or third-octave bands), RT60 (reverberation)

• PostScript file output for screen dumps, and prints out under Windows

• Import data files including LEAP/LMS, B&K, AP, MLSSA

• Export to LEAP, spreadsheets, MATLAB and Signalogic's Hypersignal-Acoustic.

SYSid Users

Audio Control
Alesis
Apple Computer
AT&T Research
Beyma (Spain)
Boston Acoustics
Burhoe Acoustics
Chalmers University (Sweden)
City University of NY
Columbia University
CTS
Dai-Ichi (Philippines)
Diversified Systems
DJ Sound (Korea)
Dupont
EAW
Earthquake Sound
Electrotec Productions
Electronic Auto Systems
Etymotic Research
Ferrofluidics
GGEC (China)
Harvard U. School of Medicine
Highway Masters
Highway
Howard Doctor
University of Indiana
Intel Corporation
JBL Professional
JL Audio
Klipsch
Link (Belgium)
Lucent Technology
McCauley Sound
Morel
MIT Research Lab of Electronics
Nortelco AB
Northwestern University
NXT Transducers
Paramount Audio
Peavey Electronics
Pyle
Dan Queen Assoc.
Selenium (Brazil)
Stanford University
Syn-Aud-Con
Thomas KL Ltd (Brazil)
Tomlinson Holman, TMH Corp.
USC
Walt Disney Imagineering

SYSid System Specifications

Number of input channels                 2

 Number of output channels               2

 Maximum sampling rate                    48 kHz

 Maximum number of averages          32,768

 Maximum length of stimulus              128,000
(both channels simultaneously)

SYSid card Analog Specifications

Input gain adjustment                Programmable
                                               to 24 kHz
Input bandwidth

Max Input level                        2 V

Output level                             1V full scale

Output dynamic range              85 dB typical

Harmonic distortion                  0.005% typical

Crosstalk                                 80 dB @ 1 kHz

SYSid card Digital Specifications

Sample rate:              User Selectable to 48 kHz

 Anti-aliasing filter (tracking)

Mic Preamp

SYSid 7 is supplied with either the Symetrix 302 dual channel mic preamp or the Earthworks Lab Series mic preamps.  Either of these units are required for interface with the PC Card and an integral connector cable is installed for Specfic use with SYSid 7.  Phantom power supply, gain control, and balanced inputs and outputs are supplied by the mic preamps.