Showing posts with label EQ. Show all posts
Showing posts with label EQ. Show all posts

Friday, March 27, 2009

How to get a Kick out of the Bass Drum using EQ

The bass drum, which many know as the kick drum, plays an important role in music. It stirs emotion in the audience, making them want to dance as it thumps through their bodies. This is of course, what it's supposed to do but if the kick drum is mixed incorrectly, it will leave the audience feeling pretty bored - no matter how good a song might actually be. Don't worry though, because that's why I wrote this post. To help you learn from my bad experiences...

Okay, so it's called the bass drum... So, if you're anything like the younger version of myself, you'll be thinking that the more bass the better, right? Well, I'm afraid not, but I won't just tell you, I'll show you. Below is a picture of the EQ settings for a kick drum. It is evident from the picture that only the bass frequencies (100 - 200 Hz) have been boosted.

EQ for a kick drum, where only the bass has been boosted.
EQ for a kick drum, where only the bass has been boosted. Click on Image for full size.

One would think this would make your kick drum more lively. Don't get me wrong, it does give it some thump, however, when added to the rest of the instruments, the bass gets lost and the beat with it. Below is a link to an .MP3 extract from a song where the above EQ has been used.

kick-with-only-bass.mp3 (588 KB)

Okay, you might be thinking that it didn't sound too bad, but if you play around with some of the higher frequencies (3000 - 5000 Hz) you will find what many call "the Click"...

For the rest of this post visit the new home of Brian's Bedroom at the link below:
http://briansbedroom.org/sound-mixing-tips/how-to-get-a-kick-out-of-the-bass-drum-using-eq/

Monday, October 20, 2008

New Ardour Recommended Plugin Effects Page

Sorry it's been so long since the last post. Brian and I have been insanely busy with work.

One of the biggest problems with using Ardour is the ridiculous number of LADSPA effects plugins that are available. It's not easy to find a good plugin and you end up wasting a lot of time trying all the different compressors, reverbs and EQ's.

To help you out, Ardour has posted a new page on plugins with recommended EQ, dynamics, reverbs and other plugins. It also tells you where to get more plugins if you're collecting them:)
If you want to recommend a plugin to Ardour, you can comment on the original plugin page annoucement.

Other posts you might find interesting:
My Favourite Linux Audio Effects
Using a Bus to Route Effects in Ardour
Audio Recording in Ubuntu Studio - Part 3: Adding Effects to the Ardour Drumtrack
An Overview of Compression
Sound Mixing Tips: EQ vs Volume

Monday, June 30, 2008

Sound Mixing Tips: EQ vs Volume

Here's a tip for live mixing and mastering, but can probably be used in any area of audio recording: If you can't hear an instrument, it's probably because of its EQ - not its volume. Before you push up that volume fader, try boosting the instrument's defining frequencies.

Here's an example. I was mixing for our church, and the band was playing one of those numbers that relies heavily on the keyboard strings. The mix was fine otherwise, but you couldn't hear the strings. The desk I was using had two mid-frequency pots, so I boosted the 250hz (low frequency) one until I could hear the strings. This brought out the full presence of the strings.

Increasing the volume wouldn't have had the same effect. Each instrument has a frequency that defines it - especially in a mix. For strings on a keyboard, I've found that frequency at the low end. Not surprisingly, it's the high end on acoustic guitars (usually 7-10khz and up).

Vocals are trickier, a whole subject on their own. I find that each person has their own 'peak' area that clears up their mix. Males are around 3-5khz and females at around 4-7khz.

To find the defining frequency, create a new peak and boost it until you can hear exactly what that frequency you're dealing with. I usually go full ball here. Then sweep it up and down the frequency spectrum until you hear the instrument come out. Then take the peak down to a reasonable level.

Other posts you might find interesting:
Speaker Placement
High There?!
Panning for Gold
Live Sound, Monitors and Pepper Spray
Audio Recording in Ubuntu Studio - Part 1: Plan your Project

Monday, April 21, 2008

High There?!

Do your recordings lack definition? Are the drums hard to hear with everything else playing? Is your mix a giant mess? Are you feeling depressed?

Well, I may have an answer to help all of the above (except the last one). First, let me ask you: do you use your high-end frequencies (10 k - 20 kHz)? If not - you definitely want to pay attention. If you do - you can add your comments and help the poor sods I mentioned in the previous sentence.

The average person's hearing ranges from 20 - 20000 Hz. So, when you see the faders on your EQ going up to 20 kHz - don't ignore the last ones! This is why: the frequencies above 10 kHz give definition and add a much needed 'sparkle' to certain instruments. Also, if you use the whole frequency spectrum, you can create a feeling of space or bunching. Another way of doing this is by using panning, but these two techniques should be used hand-in-hand. For further information on panning see my post: Panning for Gold.

Cymbals' frequencies are typically between 2 k and 20 kHz. Thus, if your drum track has the highs cutoff, they will lack definition and will not stand out. Other instruments which require a 'sparkle' factor are acoustic guitars, pianos and vocals. Vocals sound best when boosted in the low-frequencies (100 - 200 Hz) and high-frequencies (10 k - 20 kHz). Boosting the mid-frequencies (800 - 5000 Hz) can actually make the vocals more muddy and this is a common mistake.

To conclude: we have learned that the high-frequencies are important - don't forget them or reduce them on your EQ. It is for this very reason that condenser mics are better than dynamic ones. Condenser microphones have a better high-end response and thus have more DEFINITION.

Monday, April 7, 2008

Live Sound, Monitors and Pepper Spray

This one's more suited to those of you who do live sound mixing. When mixing a live band , the monitors on stage are often blasting louder than the actual speakers. This can make mixing the sound a hellish experience, especially if you're mixing a church or similar event where the audience is likely to form an angry mob.

If you've ever had that experience, then here are some tips to keep you from further mobbings:

  • Use enough monitors

    The fewer monitors there are, the louder they'll be. The musicians on stage will be so desperate to hear themselves that the monitors might even be distorting. In big stage concerts each musician can have two or more monitors each.

  • Place the monitors correctly

    Placement of monitors can make a huge difference. Make sure that each musician can at least see the monitor they are listening to. Move them so that there is nothings obscuring the sound. A monitor behind the piano is useless to piano player.

    Try changing the angle of the monitor. If possible, face the monitor directly at the musician. Also, the closer the monitor is to the musician, clearer it will be.

  • Stand on the stage

    This is something I do a lot. Go and stand by each musician. Listen to what they can hear, and also what's missing.

Monday, February 11, 2008

An Example of Loud Mastering

Okay, so you may have read my post called: To Limit or not to Limit. Well, I´m afraid I´m going to have to admit I was slightly wrong in that one. However, it still has some good points about limiting too harshly. Let me explain how I saw the light...

Below is a screen shot of a song I recorded. Take a listen Ain´t no Rock Old.mp3 (This is the same as the one posted in To Limit or not to Limit)

For this song the limiter in JAMin was bypassed. This allows the peaks their maximum amplitude, which is good because no sound quality is lost. The problem is that the track is far quieter than any commercial song. Trust me, this is a big problem - no one is going to take you seriously with a quiet track.

Below is a picture of the same track mastered loudly using the limiter to reduce the higher peaks. Take a listen to this track: Ain´t no Rock New.mp3

So in this track, as you can hear, it is much louder and competes with professional recording volumes. The cost: sound quality... As you can see the peaks have been hard limited to bring the big blob of sound closer to 0 dB. This means, your song can become less punchy. This is because the peaks are mostly from the bass drum and other percussive sounds. However, you regain punch in the fact that it will be played louder.

It´s a real toss-up and mastering professionals will debate this till the cows come home. I will make your decision easier, by saying that if you do not go for the louder mix, your songs are just not going to stand up to professional tracks.

Alrighty, with that all said, how do you get the louder mix using JAMin. This is where I apologise, you MUST use the limiter. Take a look at the screenshot of my limiter setup below.

You can see that I set the boost to the maximum - remember that we are trying to achieve a LOUD mix. Next, and most importantly, the Limit is set to -0.2 dB, this is the value at which the peaks will be cut off (you can play around with this, but only between values of -0.3 dB to 0 dB). I set the Release to round 400 ms, you want quite a long release otherwise the sharp peaks will not be cut. Lastly, we fine tune the limiter by adjusting the Input level. We do this by observing the Output level meter on the right-hand side of the JAMin window. You want your loudest parts of the track (i.e. chorus) to stay between about -2 dB and -0.2 dB, without hearing any distortion in the slightest. Make sure your track does not merely sit on the -0.2 dB mark - this means the limiter input is too high and you are limiting too much!

That´s the gist of it... give it a try and please don´t forget to rate this post.

Monday, January 28, 2008

Interfacing JAMin with Ardour

The easiest way to interface JAMin with Ardour is to use an insert on the Master channel of the mixer. The figure below shows an screenshot of an Ardour mixer. There is an insert (in red) on the on the output of the master channel. This can be done by right-clicking in the block and selecting new insert.

Once the insert appears, double-click on it to see its details like the figure below. If JAMin is already open, it will appear as available connections for both the input and output. Set out1 to jamin:in_L and out2 to jamin:in_R. This is done by dragging the JAMin labels into the relevant block. Similarly, set in1 and in2 to jamin:out_L and jamin:out_R respectively.

Your Ardour track should now be playing through JAMin. There is one more thing to do - go to the connect tab in JACK and disconnect JAMin out_L and out_R from playback_1 and playback_2 respectively. If you don´t do this, your track will playback from both Ardour and JAMin.