Sound Lab MLS Software for Windows

Maximum Length Sequence measurements

Now you can get TDS technology and TEF performance, along with the ability to do Maximum-Length Sequence measurements (MLS) in one analyzer. Sound Lab MLS software enables you to obtain an impulse response containing the entire audio frequency range over the measured time range. You can post process the data off-site to see information you didn't even think about when you performed the measurement.

Imagine being able to analyze a comprehensive set of measurement data out of a single measurement.

 

Power, flexibility, convenience

Multiple display options include:

Impulse, Doublet, Intensity, ETC, Log-Squared Impulse from Time Domain

Magnitude, Phase, Group Delay, Heyser Spiral, Nyquist from Frequency Domain

3-D Waterfall Phase

NC

Time can be further processed to find Phase, Instantaneous Frequency, RT60, %ALcons and Heyser Spiral

STI/RaSTI

Intelligibility can be found from impulse as STI, RaSTI or %ALcons

 

The powerful DSP in the TEF guarantees sequence lengths from 5.3 milliseconds to 10.9 seconds, making the TEF implementation of MLS flexible enough to meet virtually any measurement requirement. Full bandwidth long sequences are especially useful for measuring large concert halls and arenas, while medium to short sequences can be used in smaller spaces and for electrical and speaker testing.

 

Impulse is stored as a WAV file for easyexport to other applications, and all post processing is available for any WAV file.

You no longer have to choose between TDS and MLS

Combined with your personal computer and the appropriate software, you can transform the TEF into a TDS analyzer, noise analyzer, real time analyzer, and now, a maximum-length sequence analyzer. So, you no longer have to choose between TDS and MLS, as long as you choose TEF.

To speak with the TEF Sales Department, call 203-938-2588.

Tests performed Impulse Response using Maximum-Length Sequences (MLS) Full 0 to 24 kHz frequency range Selectable number of data sample points (255 to 524287) Selectable sequence lengths (5.3125 milliseconds through 10.922 seconds) Alternate sequence seeds Data cursors Selectable scaling parameters as fine as one dB per division, or auto scale Editing capability Octave band filtering Averaging Post processing multiple display options Time domain ETC Impulse Doublet Log-Squared Impulse RT60 %ALcons Frequency Domain Magnitude Phase Group Delay Heyser Spiral Nyquist 3-D Waterfall Select from 2 to 1000 curves Examine data from any angle Speech Intelligibility-RASTI and STI Displays data in tabular or graph format Noise Criteria Curves (NC) Uses ANSI* type one filters Selectable integration time (1 to 9,999 seconds) * American National Standards Institute

Overlays Available in select measurements   Difference mode Available for energy time curves, frequency and phase response measurements   Smoothing of data Percentage octave smoothing of frequency data (0 to 1000%) Data file formats Sound Lab ASCII and Binary WAV Configuration files Storage and recall of global parameter settings TEF requirements Works with the TEF25. Also with TEF20, TEF20 HI and TEF20 SHIP. Of the TEF20's, TEF20 HI or TEF20 SHIP is recommended. Serial communication limits sequence length to 341 milliseconds. Computer system requirements Microprocessor - Pentium Class RAM - 32 megabytes of available memory Monitor - VGA (1024x768 recommended minimum) Hard disk - 80 megabytes Operating system - Windows 9x/ME/2000/NT/XP FOR TEF20's - Interface, serial - One RS232 serial port capable of operating at 57.6 kilobaud. Must be assigned as COM 1 or COM 2 Interface, parallel - One bidirectional 8-bit parallel port. Must be assigned as LPT1 or LPT2 Interface, HI - One 8-bit ISA expansion slot for TEF 20 HI-PC card ®The trademark SOUND LAB is licensed under United States Trademark Registration No. 1,424,678 and 1,732,027.

SOUND LAB MLS GIVES YOU THE ABILITY TO POST PROCESS A COMPREHENSIVE SET OF DISPLAYS FROM A SINGLE IMPULSE RESPONSE.

CURSORS ALLOW YOU TO IDENTIFY POINTS AND TO SELECT REGIONS FOR FREQUENCY ANALYSIS.

SUCCESSIVE FFTs ON THE IMPULSE GIVES A PLOT OF TIME v ENERGY v FREQUENCY.

A TOP-DOWN VIEW OF THE 3D DISPLAY RENDERS A SONOGRAPH.