| Recent Posts |
Re: Headphones
by chordaroy
February 08, 2010, 04:15:03 PM
|
Re: Headphones
by stainless
February 08, 2010, 11:45:12 AM
|
Re: Time to add some treatment
by stainless
February 08, 2010, 11:23:52 AM
|
Headphones
by gaz7224
February 08, 2010, 09:42:59 AM
|
Re: Time to add some treatment
by chordaroy
February 08, 2010, 04:00:02 AM
|
|
| Members Online |
|
Forgot your password?
|
|
| Welcome to Home Recording Studio Forum |
Dear Visitor,
Welcome to the Home Recording Studio Forum. This is the place where anyone interested in recording their own music or audio can get help and perhaps help others. Your level of experience does not matter here. You are welcome to either lurk or participate in the group as you see fit. We offer several categorized message rooms where people can discuss the equipment and methods of home recording. Feel free to simply read through any of the discussions or search for a specific topic.
Many members come to us seeking information on setting up and operating a simple recording rig. Regardless of whether you want to track a few guitar riffs for future reference, build a small home studio, or record and market a full blown album project. We have countless members who can provide guidance at every level.
It is very easy to get suggestions and opinions on recording equipment. Quite often the mere mention of a piece of audio gear can prompt lengthy discussions on its use and importance in the studio. You can also get other people to listen to your music mix and offer their honest opinions and comments on your skill. They usually focus on giving you the info you need to make the right mixing decisions.
Please consider signing up and asking a stupid question or two. Chances are very high that some other members were wondering the very same thing, but were afraid to ask. Just like you, everyone here has a strong passion for this hobby and desires to mingle with their peers.
We hope you feel welcome here and enjoy many return visits. Thanks for looking.
Your staff at Home Recording Studio Forum
The best place to learn about recording at home. |
| This Month's Feature Article |
| Correcting phase between near and far mics |
| Submitted By: RawDepth Date: November 22, 2009, 05:55:35 PM Views: 16
|
This image shows a closeup of two tracks. These are mics that were used to record a guitar amp.
Track (mic) 1 was placed very near the cabinet grill right in front of the speaker.
Track (mic) 2 was placed at the same height but about 6 feet (2 meters) away from the cab.
Due to the room mic (Track 2) being some distance from the cabinet, the sound waves arrive at that mic slightly late. Judging from
the time-line in the picture, the Track 2 waveform shows evidence of being late by 4 or 5 milliseconds. (Generally the delay will be
roughly about 1 millisecond per foot or per 1-1/2 feet.)
This time difference tends to cause some phase anomalies when the two tracks are played together. In other words, places where
the waveform peaks and valleys "disagree" or "oppose" those on other tracks are considered to be a
mismatch in phase. These spots may only occur at irregular intervals but they are still sometimes frequent enough to be audible.
The recorded sound of the amp can become more thin, hollow, and boxy than the original. This is because certain frequencies
become exaggerated while others become canceled out all together, causing the overall sound to be less than pleasing.
On most modern digital recorders, the tracks can be moved manually left or right along the time-line. We can correct this phase
problem by simply sliding Track 2 to the left until it lines up visually even with Track 1. You may need to zoom in on the two tracks
side-by-side (like my picture) in order to make such a tiny adjustment.
WARNING: Save your song/session before you start moving tracks, just in case you accidentally get things out of whack. You can
always restore your files back to the way they were.
After the tracks are in matching alignment, they will likely sound more true-to-life, full, and rich.
This example mp3 is two out-of-phase/out-of-time tracks before the correction.
This example mp3 is the same two tracks after the time-line correction has been made.
(neither mp3 has been EQ'ed or otherwise altered.)
This correction is better known as time alignment. You can apply the same logic to drum overheads and other distant room mics.
Sometimes it makes a huge difference and sometimes it does not. But it is always worth trying if things in your mix seem to sound
a little "off."
|
|
|
