m/s matrix in a daw?

[baikonour]

Is it possible to convert a stereo source into a middle and side track in DAW ( i'm using Cubase SX/Nuendo)
If yes, can someone tells us the routing configuration?

many thanks

[jupiter8]

Voxengo

[Flymax]

Fairchild Lat/Vert Mode I believe..
Never really messed with it tho..

[baikonour]

Originally Posted by FLYMAX

Fairchild Lat/Vert Mode I believe..
Never really messed with it tho..

Yeah it's what I used before, but there's probably another way to do it without processing, just routing and phase inverting tracks...

[Yutaka]

(edit - Ooops, totally misread your post! Sorry.)

[baikonour]

Originally Posted by jupiter8

Voxengo

thank you but it's windows only.

[trevvahhh]

if you're talking about properly matrixing a MS mic configuration, you simply duplicate the side (fig 8) track and flip the phase on one. you know you're right if the side tracks cancel in mono. on the other hand, there lots of other uses for mid side, for instance you can produce mid and side from a stereo audio track, which allows you to manipulate seperately mid (in phase info, center) and side (out of phase info on the L and R). this can be a lifesaver, but its especially cool for playing with old beatles recordings... for instance, in eleanor rigby you can change the volume of voice or strings seperately, compress just the vocal, eq the strings.

the possibilities are endless....


a very bright man named Alan Wonneburger will be releasing a book in the (near?) future that deals with the multitude of uses for this kind of thing...

[baikonour]

Originally Posted by trevvahhh

. on the other hand, there lots of other uses for mid side, for instance you can produce mid and side from a stereo audio track, which allows you to manipulate seperately mid (in phase info, center) and side (out of phase info on the L and R). this can be a lifesaver,
...

Thanks, that's exactly what I wish to do...I don't want to decode a recording made with an M/S configuration. I want to to produce mid and side info on seperate tracks from a stereo track.

How do you do that???
Many thanks for your help.

[Van Speijk]

Originally posted by Kiwiburger
If it really can't be re-mixed ... you could use Mid/Side processing.

In the way that you can pan a stereo track from Left to Right, you can also pan a stereo track from Front to Back using M/S.

The basic method is to clone or mult the Left and Right channels so you have four channels in total.

Sum the first pair to Mono by panning both channels to the centre. The 'Mid' information, which is basically your dry stuff that is common to both side, gets a 6dB boost from the summing. The 'Side' information, which is basically your stereo wet stuff (like reverb) doesn't get any boost.

With the second pair of left & right, do the same but invert the polarity of one side. This cancels out the dry stuff that is common to both sides, leaving just the wet stuff (in mono).

Now, you recombine the mix of these two buses (Mid and Side) back into a stereo Left/Right mix. This is done by creating one side by summing Mid and Side and panning to one side. The other side is created by subtacting Side from Mid and panning to the other side. Subtraction is achieved by Summing with one side channel polarity inverted.

If you are new to this - this sounds strange and convoluted. But the mathematics are solid - you really can turn Left & Right into Mid and Side, and then back again to Left & Right with zero loss of informaton.

The reason to do this is to allow you to change the mix between Mid and Side - Wet & Dry - Front to back.

There are plugins that make this Encoding & Decoding easier.

This was from the mastering forum. Sometimes you can search for an answer and find it before posting a new thread. There ain't much which hasn't been answered already.
Van Speijk

[psycho_monkey]

Good explanation.....beware of delays caused by bussing etc though!

For example, if you've split the signal into m/s, and then want to convert it back to L/R, probably best way to do it is to buss mono o/p of side channel to 2 aux channels, panned L+R, one phase flipped, and also bussing the mono mid channel to an aux, panned centrally - just to keep any delays incurred consistent.

Reading the above, having summed to mono to get the "mid" information, you'd then have to drop the level of this fader 6dB to keep the relative volumes between mid and side the same, yes?

[mattkalin]

check out
http://soundhack.com/freeware.php

mid/side encoder/decoder is included in latest free bunde.

i also like +compand... very utilitarian compressor/expander that can go as far as you want.

i don't yet understand the distorition plugs that are included.

[baikonour]

Originally Posted by Van Speijk

This was from the mastering forum. Sometimes you can search for an answer and find it before posting a new thread. There ain't much which hasn't been answered already.
Van Speijk

thanks a lot
PS: i did a search before starting this thread (I've been around this forum for quite awhile) but missed this one...Thanks again.