23-Nov-2016, 14:39
Thanks' Antoine, you have saved me a job!
This is definitely an interesting test, and quite simple to do so I would recommend this as something to try. If you want to know how much effect SAM has in the fine details in your music, there is nothing like listening for yourself. @yabaVR does have a valid point here I think.
Although I have to say that in general listening I am someone who prefers SAM on, for me it does improve the accuracy of the bass and improves the coherence of the sound stage. Also it does seam to clear up the mid-range with a lot of the music I listen too, quite what the mechanism is for this I am not quite sure. My understanding is SAM is designed to mitigate phase errors which are a fundamental part of the mechanical restrictions and compromises in speaker design, after all, a 8" bass driver cannot react as quickly as tweeter, thanks in no small part to the laws of physics.
To quote Devialet: "In its current implementation, SAM is effective on lower frequencies, up to 150Hz; yet its effects can be heard throughout the audio range.
By its principle, SAM ensures that the acoustic response is at every instant an extremely faithful image of the recorded signal ; this is true on transient signals (notes attacks, drums, …) as well as on continuous signals (notes sustain, organ…). In particular, SAM prevents any delay between bass and the rest of the spectrum, avoiding the effect of the phase rotation at the vicinity of the natural low-frequency cut-off of the loudspeaker."
http://en.devialet.com/assets/Systems/De...per-EN.pdf
I suppose the finest aspect of SAM is that it does have an on / off toggle on the remote, and we can all make our mind up what to do with that depending on the mood of the day. I would urge others to try vabaVR's test though, fascinating stuff.
This is definitely an interesting test, and quite simple to do so I would recommend this as something to try. If you want to know how much effect SAM has in the fine details in your music, there is nothing like listening for yourself. @yabaVR does have a valid point here I think.
Although I have to say that in general listening I am someone who prefers SAM on, for me it does improve the accuracy of the bass and improves the coherence of the sound stage. Also it does seam to clear up the mid-range with a lot of the music I listen too, quite what the mechanism is for this I am not quite sure. My understanding is SAM is designed to mitigate phase errors which are a fundamental part of the mechanical restrictions and compromises in speaker design, after all, a 8" bass driver cannot react as quickly as tweeter, thanks in no small part to the laws of physics.
To quote Devialet: "In its current implementation, SAM is effective on lower frequencies, up to 150Hz; yet its effects can be heard throughout the audio range.
By its principle, SAM ensures that the acoustic response is at every instant an extremely faithful image of the recorded signal ; this is true on transient signals (notes attacks, drums, …) as well as on continuous signals (notes sustain, organ…). In particular, SAM prevents any delay between bass and the rest of the spectrum, avoiding the effect of the phase rotation at the vicinity of the natural low-frequency cut-off of the loudspeaker."
http://en.devialet.com/assets/Systems/De...per-EN.pdf
I suppose the finest aspect of SAM is that it does have an on / off toggle on the remote, and we can all make our mind up what to do with that depending on the mood of the day. I would urge others to try vabaVR's test though, fascinating stuff.
1000 Pro - KEF Blade - iFi Zen Stream - Mutec REF10 - MC3+USB - Pro-Ject Signature 12
