Meyer Sound SIM3 vs Rational Acoustics SMAART7   2 comments

This week i finally got the chance to do a small comparison between SIM3 and SMAART7 . I work a lot with both programs so knowing differences between them might be handy for me .

THIS IS NOT A LAB TEST SO THERE IS NO FINAL CONCLUSION REGARDING WHICH OF THE 2 IS BETTER . JUST USE THE SYSTEM THAT SUITS YOU BEST OR IS WITHIN YOUR BUDGET .  

Did i find differences ?

Yes i did need to give SIM3 a different coherence threshold value compared to SMAART 7. Also when i started the measurement SMAART 7 synchronized at 4.9ms while SIM3 synchronized at 4.88ms . I chanced the timing of SMAART 7 to 4.88ms . Why don’t know but when i changed the mic position to get a bit more distance both analyzers synchronized at the same time .

The loudspeaker cabinet is a new product being worked on down here in the Netherlands .

I call it the “little boy” because it’s the little brother of another product which I also did a bit of measuring on ("BIG BOY") . Thanxs to the guy’s from United Tecknowledgy and Vision Acoustics .

So here are the screen shots of both analyzers .

SIM3 start no filters

001 strt sim 4.88ms 

SMAART7 start no filters

001 strt smaart@4.9ms

SMAART7 start no filters set to 4.88ms .

001 Smaart to sim 4.88ms

SIM3 start High .

002 strt SIM high

SMAART7 start High .

002 Strt high

SIM3 start Mid-high .

003 strt SIM mid high

SMAART7 start Mid-high .

003 strt mid high

SIM3 start Low-mid .

004 strt SIM low mid

SMAART7 start Low-mid .

004 strt low mid

SIM3 start Low .

005 strt SIM low

SMAART7 start Low .

005 strt low

SIM3 Level raised on the high’s .

006 SIM high level raised

SMAART7 Level raised on the high’s .

006 high level raised

SIM3 High high-pass filter .

007 SIM high strt vs high bess4hp

SMAART7 High high-pass filter .

007 high strt vs high bes4hp

SIM3 Mid-high high-pass & Low-pass filter .

008 SIM High mid filtered

SMAART7 Mid-high high-pass & Low-pass filter .

008 high mid filtered

SIM3 Mid-high start vs Mid-high high-pass & Low-pass filter .

009 SIM high mid strt vs high mid filtered

SMAART7 Mid-high start vs Mid-high high-pass & Low-pass filter .

009 high mid strt vs filtered

SIM3 Low-mid high-pass & Low-pass filter .

010 SIM low mid filtered level reduced

SMAART7 Low-mid high-pass & Low-pass filter .

010 low mid filtered level reduced

SIM3 Low-mid start vs Low-mid level reduced + high-pass & Low-pass filters .

011 SIM lm strt vs low mid end

SMAART7 Low-mid start vs Low-mid level reduced + high-pass & Low-pass filters .

011 low mid strt vs low mid filtered and level reduced

SIM3 Low high-pass & Low-pass filters + 1 allpass filter .

012 SIM low hp lp ap2

SMAART7 Low high-pass & Low-pass filters + 1 allpass filter .

012 1 low filtered hp lp allpass 

SMAART7 Low Low-pass filter .

012 2 low lp

SMAART7 Low high-pass & Low-pass filters .

012 3 low lp hp

SMAART7 Low high-pass & Low-pass filters + 1 allpass filter .

012 4 low all compare

SIM3 Low start vs Low high-pass & Low-pass filters + 1 allpass filter .

013 SIM low strt vs filtered

SMAART7 Low start vs Low high-pass & Low-pass filters + 1 allpass filter .

013 Low strt vs filtered

SIM3 start no filters vs the end result .

014 SIM strt vs end

SMAART7 start no filters vs the end result .

smaart strt vs end

SMAART7 onax start end result .

014 done 

SMAART7 onax start end result vs ofax roughly at the –6db point at 26° ofax to the right so the 52° coverage is as specified as far as i could see at the time of the measurement . Because i had to do 3 more measurements on new products i had to move on ……..

015 onax vs ofax (ofax set to  6db)

2 responses to “Meyer Sound SIM3 vs Rational Acoustics SMAART7

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  1. Be aware of two issues: Microphone vs Microphone measurements (mic compare, mic eq) are inaccurate in the presence of noise – noise in one channel can influence the displayed transfer function and is not eliminated the way it is in normal SIM mode. This is a design error. Also the mode commonly called “1/3 octave” is actually labelled “Band Spectrum” on the screen, which is a more honest description of its function.

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