What's New?
Most additions as of January 2010:
Reverberation Utility
(RT-60) - Added the ability to use a signal source
other than the internal pink noise such as a ballon pop or gunshot.
1) Use the Recorder mode to capture the signal and subsequent decay.
2) Examine the waveform using the Time Series view and graphically
select the signal and the decay; to do this click the selection
arrow and then click and drag the mouse across a range of time. When
the mouse button is released, the selected time segment will be
shown with inverse video.
3) Right click on the plot and select the "Compute and Display
RT-60" menu item.
4) The Reverb Time utility will open and the results computed and
displayed.
5) You can fine tune the time at which the utility will start the
decay time by right clicking on the decay plot at the peak of the
burst and selecting the "Set Decay Start Time". This will recompute
the results based on the new decay start point.
Macro Utility - Quick Run Buttons
Added an optional toolbar that allows you to define and label up to 6 buttons that will automatically launch an associated macro file. Very useful for quick test access. Click the Options menu button on the Macro Utility to set this up.
(For a list of all recent changes and fixes see the change log on the download page)
Major Changes since version 2.32
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.
Live Peak Hold Trace - peak hold is now a
separate live trace with selectable release times. This allows you
to simultaneously view the normal spectral data and the peak hold
data - perfect for monitoring live sound.
Improved spectral overlay features - now up to six
simultaneous traces. Each overlay can also be offset to line up with
other overlays. We have also added a new composite
overlay; essentially a 7th overlay that can be the average of any of
the other overlays, or the difference between any two selected
overlays.
Total Power Meter Bar - the total power
measurement is now shown as a vertical bar to the right of the
spectrum plot. It shows both the spectrum total power and the peak
hold total power. The total power measurement can also be weighted
differently from the main spectrum; this allows you to have flat
weighting on the main spectrum and A weighting on the total power
measurement - very useful!
High Resolution Analysis
- 24 bit sampling precision - high bit depths for high dynamic range and precision measurements (sound card dependent).
- Up to 200kHz sampling rate - greatly expands the upper limit of the analyzer (sound card dependent).
- FFT sizes up to 1,048,576 points - for ULTRA high frequency
resolution
Octave scaling to 1/96.
Acoustic Tools
- Reverberation Time (RT60) - utility features bar graph of reverberation time versus frequency band, 3-D Surface plot of the decay versus frequency and individual decay plots versus time.
- Delay Finder - measures delay between two channels in milliseconds, feet or meters. Speed of sound - converts the delay value between milliseconds, feet or meters.
- Equivalent Noise (Leq) - utility provides comprehensive noise level calculations for LeqT, Leq, Lpk, Lsel, Lmax, Lmin, L10, L50, L90.
- Stereo Phase Scope for real-time monitoring and analysis of signal phase. Phase scope mode displays a standard oscilloscope X-Y orientation (lissajous pattern) for analysis of phase, polarity, missing channel detection and stereo separation monitoring.
Automation Tools - VERY POWERFUL
- Macro Command Processor utility- allows you to easily automate measurements, record SPL and spectral data at user specified intervals/duration with time/date stamp, save files with user-defined names using a script-based programming language. It uses the underlying DDE syntax for an automation solution without requiring a third party program.
- Dynamic Data Exchange (DDE) - allows the capability for an external program to control and read results from the analyzer in real time. Works with any program that supports DDE such as C++, VB, Excel, Access and others.
- Data Logging - utility produces an output text file containing selected spectral parameters + time-stamp for dynamic signal tracking and "unattended" event monitoring.
Dual channel signal generator - now generate
independent signals in each channel. Create single or multiple
tones, pink or white noise, noise burst, frequency sweep, level
sweep, pulse, saw, triangle, square, IMD test tones, DTMF, digital
zero, and user defined WAV source. - very powerful. Also a
added Frequency Step signal.
Quick Loading of Configuration Files - can now be
loaded from a drop down list box directly from the main toolbar.
Provides quick access to stored configurations and default settings
as well as the ability to "Undo" the operation.
Multicolor 3-D Surface Display - provides an
effective analysis tool for analyzing complex spectrum content over
time.
Digital Filtering - precision digital filtering of
wave files; includes Low Pass, High Pass, Bandpass, Notch and User
Defined filter response for truly "Custom" filtering!
Advanced Scaling and Calibration - allows
independent channel calibration and scaling for both left and right
channels with separate views for each. Useful for applications
requiring separate channel scaling and calibration such as
simultaneous sound and vibration measurements. Includes calibration
conversions from Acceleration to Velocity or Displacement; also adds
Power Specral Density (PSD) scaling option for accurate noise
measurements.
New toolbars - quick access to many of the settings
and measurements.