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Archive for the ‘Uncategorized’ Category

‘MONO’ Is a Four-Letter Word by Eric Abrahams

Thursday, July 18th, 2002

Long after some Einstein engineer figured out that music sounds better coming out of two speakers rather than one, and someone else discovered the pan pot, the dinosaur known as ‘mono’ insists on existing. Virtually all the blame for this can be placed on A.M. radio, Ford half-tons, and television, with their shitty litle 3″ speakers. As a result, engineers still have to ensure that their mixes are mono-compatible and that half of the instrumentation doesn’t fall out when mono is pressed.

I have always found the biggest culprit to be multiple miking techniques on pianos, guitar cabinets, and the like. Although it is virtually impossible to determine if your mic placement is phase coherent before actually listening to it, a little planning and common sense can go a long way towards minimizing Tylenol intake.

If, for example, the idea is to produce a stereo image from a single guitar cabinet, a pair of mics is obviously required. since increaded distance from the edge of the speaker cone decreases bass response, setting up a stereo configuration in the middle of the front of the cone isn’t going to do it, unless the desired sound is thin. If one micgets moved to a placement, say 2″ in from the edge of the cabinet, 1/2″ away from the grille, and a foot above the floor, set the other mic up as a mirror image on the other edge of the cabinet. Instant Phase-Coherent Microphone Placement, Just Add Level. At such close distances to a source, a small movement results in a largephase shift. If one microphone is 1″ away and the other is 2″, it takes the sound twice as long to reach the second mic as it does the first, and there is a 180 degree phase shift – perfect cancellation – at 6600 Hz, the frequencywhose wavelength is 2″. This should also be remembered for subsequent overdubs. If the original bed track guitar was done with the two mics 2″ away from the speaker, and, at a later time, the guitarist doubled his rhythm part but the pair of mics was 4″ away this time, each of the stereo guitars on tape will be phase-coherent within themselves but not together. This time, the problem will occur at about 3300 Hz., a 4″ wave-length. Isn’t modern technology wonderful? Engineers will be haunted with this until mono is abolished and North America catches up with Japan in the TV department. Pray it will happen soon.

Wouldn’t mixing be so much easier if we ahd just one ear in the middle of our foreheads? But, then again, we’d look pretty silly talking on the phone.

Eric Abrahams – Head Engineer, Cherry Beach Sound, Toronto, ON. (Credits include: Kim Mitchell, Trash Gallery, Roxy Lane, Russian Blue, Dreamer, Nicola Vaughan, Angel Marr.)

Revelations by Eugene Martynec

Thursday, July 18th, 2002

I was doing electric guitar overdubs on the first Kensington Market album in the late sixties and I was getting frustrated by my terrible guitar sound. I asked producer Felix Pappalardi (Felix was enjoying huge success with Cream at the time) how Eric Clapton got such a great sound. He said that they put a mic in front of his amp and he played. Simple! He supplied most the great sound. I later found out that this was the case with all good musicians and that the studio was an enhancement tool, not an apology for poor listening habits from the musicians. Years later I got a classic question: “Can you make me sound like Jimi Hendrix?” My retort was, “If you can play like him, we can certainly make you sound like him.”

Eugene Martynec – Juno Award winning Producer (now represented by SRO Management in Toronto); Instructor at Harris Institute for the Arts, Toronto. (Credits include: Bruce Cockburn, Edward Bear, Murray McLauchlan, Doug & the Slugs)

Stereo Imaging by Neil Muncy

Thursday, July 18th, 2002

Just about everyone uses “nearfield” monitors. While most of these little speakers are amazingly rugged, every so often a problem will develop which affects the stereo image. Good imaging requires matched speakers. If you think you are having imaging problems, or just want to see how well matched your nearfields are, here’s what you can do to test them using only a piece of wire, your ears, and a blanket!

Make a “Y” cable, so that you can feed both speakers from the same power amplifier channel. Connect the speakers, making sure you observe the same polarity for both. Position the speakers on the console so that they form an equilateral triangle with your seated position. Orient the speaker cabinets so that the tweeters are above the woofers. Start the music, and find the centre using your ears. If both speakers are well matched, you should sense that all of the sound is coming from the midpoint between two speakers. Then, to reduce reflections, cover the control surface of the console with a thick blanket. The image should get even tighter and more centred. Next, turn the two speakers so that the drivers are facing each other, and move them together so that they are as close as possible. You should hear a slight increase in sound output. Now reverse the connection to one speaker. There should be a dramatic drop in sound, with all of the low frequencies, and most of the highs, completely missing. If there is any substantial soudn remaining, there is something wrong with one or both speakers. (This test assumes that the drivers are mounted one directly above the other, or that the cabinets are sold in mirror-image pairs).

If your speakers fail these tests, comparing each one individually with another unit which is known to be good shoudl pinpoint the defective unit. If your speakers pass these tests, but the imaging is still “off” under normal conditions, chances are that there is an electrical problem somewhere in the monitor chain, and it may be time to call your maintenance technician.

Neil Muncy – Neil Mancy Associates, Ltd., Consultants in Electroacoustic Systems, Scarborough, ON

Naked Lunch Drums by Peter J. Moore

Thursday, July 18th, 2002

The search for amazing spaces for “real sounds” has led me to another discovery. The movie set for Naked Lunch has just pulled out of the “Munitions Bunker” beside Cherry
Beach sound studios. I was snooping around and looked at the ceiling structure; fantastic! Next I brought in drums and tested my theory. Yep, the best darn drum sounds I’ve heard in a long time. I told the owner Carman, that he should put the tie lines between the space and his CF750 control room. This he did in time for my next project which was a great success. I found out that the Kim Mitchell project also feld the same way for their drum sounds. Let’s hear it for real reverb.

Peter J. Moore – DI Productions, Toronto, ON (Credits include: Cowboy Junkies, The Silos, Lucinda Williams, Holly Cole, Swamp Baby, Pat Temple, The Corn Dogs, T.S.O. and M.S.O.)

Problem Vocalist? by Richard Chycki

Thursday, July 18th, 2002

Paranoid, uncomfortable vocalist in the studio? Bad news because, as a producer, the responsibility falls on you to coax good product from him/her. If they don’t like headphones, throw a pair of Auratones up out of phase and put the mic in the “out of phase” null. Easy enough, but what if the vocalist doesn’t like singing into one of those big, cold studio mics but favours that ubiquitous SM57.

Relax, digital breath. Patch in both your handheld and your studio condenser mics. Make a deal with the singer that he/she can use their ol’ fave but you’ll want your mic nearby (get it in writing and try to take their publishing at the same time with a little fancy small print – invisible ink does wonders here!). Allow the vocalist to monitor the handheld – you monitor and record the studio mic which, in use, should still be on vocal axis but probably a little farther away than a normal vocal overdub session.
The relaxed attitude and resultant increase in productivity of the vocalist more than makes up for the slight compromise in studio mic distance. As long as room relativity is low, and your vocalist doesn’t get too aerobic during the session, you should have few problems.

Richard Chycki – Freelance Engineer/Producer in Toronto

Keep That Mix Under Control by Rob Porter

Thursday, July 18th, 2002

When mixing, combining different treatments of the same track gives more control. I often split my snare track to two channels – one channel slightly gated (3-10 dB attenuation – long decay) resulting in a natural sounding drum which feeds reverbs nicely. The second channel I very tightly gate (60 dB attenuation – short decay) followed by a dbx 160 compressor (4:1 ratio 8-10 dB gain reductino) with lots of 60 Hz EQ added. I use channel two dial in the impact portion of the sound so that the drum still sounds BIG on small speakers or radio.

Rob Porter – Engineer, Mushroom Studios, Vancouver, BC (Barney Bentall & The Legendary, Love & Sass, Lava Hay, Mae Moore)

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