Brilliant.
Thanks a lot. Very clear now.
Emanuele
On 28/01/2014 13:37, Flawn Williams wrote:
> Emanuele=97
>
> There are a lot of resources on the Web that describe Mid/Side decoding. =
One useful one (apart from its careless but hardly unique misuse of the ter=
m =91phase=92 where =91polarity=92 is the correct concept) is at:
>
> http://www.bhphotovideo.com/indepth/audio/tips-solutions/recording-mid-si=
de-microphone-configuration
>
> Scroll down to the =91decoding=92 section to see the details.
>
> If you want a graphical reference, go to Google Images and search =93MS d=
ecode=94 or MS Matrix=94.
>
>
> Basically here=92s what you do to decode M/S to L/R:
>
> --Bring in your mid and side signals onto separate mono tracks.
>
> --Pan the Mid track to the center.
>
> --Pan the Side track all the way to the left.
>
> --Duplicate the Side track, invert the polarity (or =93flip the phase=94)=
on that track, and pan that track all the way to the right.
>
> --If possible, link the volume faders for the two Side tracks so they are=
always equal in setting.
>
> All three tracks should be routed to the same stereo output or bus. What =
will emerge on that bus is decoded left/right stereo.
>
> You can raise or lower the Mid track for more or less center intensity, a=
nd raise or lower the Side tracks in tandem for wider or narrower image.
>
>
> Now, the less intuitive trick:
>
> If you set up an identical configuration of three tracks, but route Left/=
Right audio into it instead of Mid/Side audio, what will emerge from the tr=
acks is a Mid signal on the left output and a Side signal on the right outp=
ut.
>
> So if the signal you recorded from your MS mic was already decoded in the=
mic or in the recorder, or if you have any other normal stereo signal that=
you want to rebalance the middle vs. the sides:
>
> You can send that left/right stereo signal into a set of three faders set=
up as above, to derive Mid and Side signals, and route those to a stereo b=
us. You probably will leave all three of these volume faders set at unity g=
ain.
>
> Then route that stereo bus into another set of three faders set up as abo=
ve to re-decode the Mid and Side signals into left and right. You can manip=
ulate the faders on this second group to adjust center intensity and image =
width.
>
> =97Flawn
|