SpectraPLUS - Audio Spectrum Analyzer

If you have been searching for an extremely powerful yet cost effective solution to audio spectrum analysis then you have found the right product. SpectraPLUS allows you to perform complex audio signal analysis without the use of any other hardware other than your Windows compatible sound card.

NEW - excited to announce a new product called SpectraPLUS-DT. It supports the Data Translation 9800 line of industrial multifunction data acquisition modules.? Data Translation offers a complete line of these USB modules from low cost to high speed and high performance including the new DT9837.

"I have used Spectrum Analyzers for nearly 35 years and SpectraPLUS for nearly 10 years; it is among the best. Intuitive and easy to use, it is virtually indestructible - a very stable software platform. While more expensive than other packages its reliability and capabilities make it well worth the money. This software is not a toy and stands up to the needs of the sound professional in their day to day measurement requirements." - Dr. Earl R. Geddes, GedLee LLC

Key Features

• Real-time FFT analysis of live input
• Record, Playback and Post Process WAV files
• Displays: Time Series, Spectrum, Spectrogram, 3-D Surface, Phase
• Full Featured Dual Channel Signal Generator
• High Resolution FFT Analysis up to 1,048,576 pts
• Octave Analysis from 1/1 to 1/96
• 24 bit precision, sampling rates to 200kHz and above (sound card dependent)
• Digital Filtering, Distortion Analysis, Transfer Functions
• Acoustic Tools: RT60, Leq, Delay Finder
• Automation Tools: Macro, DDE, Data Logging
• THD+N versus Frequency utility

Features and Specifications

• Sampling Rate: highest rate supported by hardware (192 kHz cards are widely available)
• Frequency Span: Up to 1/2 of selected sampling rate
  Decimation (down sampling): Up to 50:1 ratio
• Sampling Precision: 8, 16 or 24 bit (hardware dependent)
• Maximum Channels: 2
• Modes: Real-Time, Recording, Post-Process
• Post-Process Editing: Cut, Copy, Paste, Play, Play Special, Mute, Gain Adjust, DC Offset, Filter
• Digital Filtering Options: Low Pass, High Pass, Bandpass, Notch or User defined filter shape
• Hard Disk Recording: Automatic rollover when Wave file size limit reached.
• Displays: Time Series, Spectrum, Phase, 3-D Surface Plot, Spectrogram
• Time Series Display options: Left, Right, Both, Difference, Left vs Right (X/Y) or Right vs Left (Y/X)
• Data Views: Popup window of underlying data values.
• Spectral Overlays: Up to 6 simultaneous overlay traces, unlimited save and retrieve from hard disk
• Composite overlay: average of any selected overlays or the difference between any two overlays.
• Video Zoom: Arbitrary Zoom In to any portion of overall frequency or time span
• Auto Scaling: Spectrum and Time series views
• Cursor Measurements: Absolute, Differential (Ctrl key), Harmonic cursors (Shift key), Sideband cursors (Ctrl + Shift key)
• Right Click Action Menus: Various Cross display functions, Inverse FFT, Cepstrum, Smooth Spectrum, Expand and order Edit functions
• FFT Sizes, 32, through 1,048,576 pts (in powers of two increments)
• Overlap Processing: Up to 99% of FFT size in Post Processing mode
• Smoothing Windows: Bartlett, Blackman, Flat Top, Hamming, Hanning, Kaiser, Parzen, Triangular, Uniform
• Averaging Modes: 1) Free Run with selectable block size. 2) Sound Level Meter mode (Off/Fast/Medium/Slow/Forever)
• Averaging Types: Exponential, Linear or Vector moving average
• Peak Hold: live peak hold with selectable timeout
• Dual Channel Processing: Average, Cross Spectrum, Real and Complex Transfer Functions, Coherence
• Cross Channel Delay: One channel can be delayed with respect to the other
• Delay Finder: Determines the time delay between two channels using cross correlation techniques. Delay units can be Milliseconds, Feet, or Meters
• Overload Detection: Flag and/or exclude data when maximum input level is exceeded
• Amplitude Axis Scaling: Linear or Logarithmic plus Power Spectral Density (PSD) option
• Frequency Axis Scaling: Narrowband Linear, Narrowband Logarithmic, 1/1, 1/3, 1/6, 1/9, 1/12, 1/24, 1/48 or 1/96 Octave
• Spectral Weighting: Flat, A, B, C ANSI weighting curves
  Microphone Compensation: Independent compensation for each channel
• Markers: Up to 8 user defined markers with user customizable labels
• Triggering: Selectable threshold, channel and delay. Edge or Level detection
• Amplitude Calibration: V, mV, dBV, dBmV, dBu, SPL or PA (in air or water), psi, or custom units
• Vibration Measurements: Acceleration (G), Velocity (ft/sec, in/sec, mils/sec, mm/sec), Displacement (ft, in, mils, mm)
  Independent Calibration and Scaling: each channel can be scaled and calibrated independently
• Signal Generator: Pink Noise, White Noise, Tone Burst, Noise Burst, 1 kHz Tone, Multiple Tones, Frequency Sweep, Frequency Step, Level Sweep, IMD test tones, Pulse, Sawtooth, Triangular, Squarewave, User Defined (from .WAV source). DTMF, Digital Zero
• Utility Measurements: Peak Frequency, Peak Amplitude, Total Power
• Distortion Measurements: THD, THD+N, SNR, IMD
• THD+N versus Frequency utility - quickly and conveniently measure the distortion characteristics of a device over a range of frequencies.? Results are shown on a semilog/log plot and can be saved/loaded from disk or printed.
• Acoustic Tools: Reverberation Time (RT-60), Delay Finder, Stereo Phase Scope, Equivalent Noise Level (Leq, LeqT, Lsel, Lpk, Lmax, Lmin, L10, L50, L90
• Automation Tools: Dynamic Data Exchange (DDE), Macro Scripting Language, Data Logging
• Import/Export: .WAV, ASCII, and Binary file formats
• File Merge: Join two mono files into a single stereo file
• Configuration Files: Store and recall common analyzer test setups from disk. Quick load from toolbar
• Color Printing: All displays plus annotation, comments, and margin control
• Clipboard support: WAV segments, tabular data and bitmap images