Simultaneous LCR signal generator in REW for macOS

[ranyart]

Hi all! For years I used to use AudioTools iOS app for home theater measurements and calibration. One of the in-app option there is a Surround Generator which was quite handy to equalize speakers but suddenly stopped to work properly in iOS13. This is a serious issue for me and after some researches I decided to buy MacBook and switch to REW instead. What I've found is that REW HDMI channels selection in macOS provides similar functionality except of one - simultaneous LCR channels selection for signal generator (see picture of AudioTools generator example). There's L+R for stereo but no L+C+R for home theater. I think it'll be beneficial to add this routing option, especially that some home theater pros use simultaneous LCR measurement as one of the method to verify home theater calibration results.

 

[John Mulcahy]

How is L+C+R used for verification? When a timing reference is used measurements of L, C and R individually can be summed to show what L+C+R would look like at the measurement position.

 

[ranyart]

Spatialy averaged 4 mics response with full band pink noise feed to LCR simultaneously. It's much more effective than single mic measurement of 3 individual channels at each of 4 positions. But the limitation now is availability of all-LCR test signal.

 

[John Mulcahy]

There is a todo list item for multiple outputs, I'll add this to it. No idea when I might get to that though.

 

[ranyart]

Great! Thank you John.