REW 4.11 Released

[AngelEyes]

A few details of what the new version includes:

Spectrum and RTA Displays

The Spectrum graph page offers a spectrum analyser plot with resolution of up to 0.3Hz or Real time Analyser (RTA) plots with resolutions up to 1/48th octave. It calculates THD and THD+N distortion figures and shows the relative levels of the 2nd to 9th harmonics of test tones. It allows high resolution measurement of system responses without having to connect to the system being measured by either playing a pink noise signal through the system or, for much more precise low frequency measurements without the very long averaging required for pink noise, playing the new pink periodic noise signals from REW's own signal generator saved as WAV files.

Reverberation Time Displays

The RT60 graph page shows reverberation times in octave or one-third octave bands calculated in accordance with ISO 3382. Related plots for the current measurement, including the Schroeder curve used to derive the RT60 figures and the linear fits for the various RT60 parameters, can be viewed on the Impulse graph page. The Impulse page also allows an octave or one-third octave band filter to be applied to the current measurement and the associated frequency responses.

Automatic Soundcard Compensation

A loopback connection on the left soundcard channel can be used to provide an automatic calibration reference settings as an alternative to using a soundcard cal file. This has the advantage of removing the soundcard's influence from the impulse response as well as the frequency response (the calibration file method only corrects the frequency response) and allows measurement of the delay through the system being tested, useful for checking or setting speaker distances.

• Analysis setting to enable IR Decimation, reducing sampling frequency of the IR for low frequency measurements to greatly reduce data size (as much as 30 times for measurements up to 200Hz) and increase processing speed
• Added a Clip indicator in the SPL Meter to warn of clipping on the input
• Inverse C weighting correction is not applied below 5Hz
• Added option in house curve settings to use logarithmic interpolation between data points
• Logarithmic interpolation is applied between data points in mic/meter calibration files
• Improved fractional octave smoothing of traces
• Added Ctrl+Shift+1 and Ctrl+Shift+2 shortcuts for full and half octave smoothing respectively
• Improved quality of graph JPEGs when JPEG is larger than original graph
• Improved speed of preview thumbnail for image files in file chooser
• Updated R-DES EQ setting to allow 5 filters
• Allow data import files to have .txt, .dat and .frd extensions and remember the import file name independently of other text files
• Zoom/measure box shows units in delta values, time deltas also show equivalent distance in metres and feet
• Improved cursor readout on graphs so maxima are returned
• Added dither option for sine gen output
• Simplified the SPL meter (removed tracking and harmonic levels) and incorporated it in the toolbar
• Changed VU meters to show Left and Right instead of just Input
• Added impulse response envelope (aka ETC) to the Impulses graph page
• Added View settings to set the font size for the interface elements and the graph axes (applied after restart)
• Moved the REW log files into a folder called "REW"
• Changed the impulse start (zero) time to be first point response exceeds 10% of the peak amplitude (1% of peak energy)
• Various GUI updates to correct layout and formatting problems on Mac
• Various bug fixes as detailed in the revision history

[eviljohn2]

Wow, this software looks very well specified compared to even some of the best professional software available. Very impressive and unbelievable at the price.

[Badger0-0]

Inverse C weighting correction is not applied below 5Hz



Cracking piece of software

[russ.will]

Indeed and having downloaded it, I don't seem to be suffering some of the problems I used to (Mac user), so assuming they've solved the issue I had with it crashing all of the time, I'm going to get stuck right in.

Russell

[Badger0-0]

You should get a decent computer mate

[russ.will]

I have. Three of them, including the dual core MacBook Pro this is being typed on.

I will never turn to the (plastic) dark side.

To be fair, my Macs travel with me for photographic purposes and have operated flawlessly in everything from winter in the Alps to the Jordanian desert. The one I had that did pack up, was replaced with the latest variant within 48hrs and no quibbles.

I love em.

Russell

[Badger0-0]

Originally Posted by russ.will

I have. Three of them, including the dual core MacBook Pro this is being typed on.

I will never turn to the (plastic) dark side.

To be fair, my Macs travel with me for photographic purposes and have operated flawlessly in everything from winter in the Alps to the Jordanian desert. The one I had that did pack up, was replaced with the latest variant within 48hrs and no quibbles.

I love em.

Russell

Good man

Dam, no matter how much I try to differentiate myself from you, we always end up agreeing

[Nimby]

Dragging computers around the world to take photographs?

I'd invest in a digital camera, matey. Those webcams are rubbish.

Good news on the latest REW release.

I'll be very interested in trying the distortion measurement feature.

[AngelEyes]

Dear Moderator,

Please remove the off topic posts from the smug Mac owners. I would love to put them in their place but not in this thread.

Yours gratefully,

Indecisive PC & Mac owner.

[mattkhan]

the 1st result of a google for "spectrum/rta feature" makes quite interesting reading on some of the uses for the new REW features

[russ.will]

Originally Posted by AngelEyes

Dear Moderator,

Please remove the off topic posts

Hello pot, this is kettle.

Russell

[IronGiant]

I have changed the title

[russ.will]

Originally Posted by AngelEyes

Dear Moderator,

Please remove the off topic posts from the smug Mac owners. I would love to put them in their place but not in this thread.

Yours gratefully,

Indecisive PC & Mac owner.

In deference to the apparently menstrual AngelEyes, I note that the incredibly shortlived 4.10, in being replaced by 4.11 deals with an issue where REW crashes after one sweep with a certain sound card.

This is exactly what I'm experiencing with my Mac and I can assure you due to this issue alone, I'm feeling considerably like an un-smug Mac owner.

However, I shall download this latest version and cross my fingers again. I really would love to be able to get it to work as it has soooooo many features relevant beyond the world of subs, it really could elevate me to another level of bore altogether.

I suppose, I could put my short arms in my long pockets and buy an external soundcard though.

Russell

[IronGiant]

Don't kid yourself Russ, I couldn't get 4.10 to work on a PC card with a breakout box covered in RCA sockets, I'll try it with 4.11 though

Dave

[mojogoes]

Hi Russ...........are you saying that with this new/er piece of updated software that one would be able to change and integrate / improve on the rest of ones system's frequencies.