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Archive for the ‘audio effect’ Category

Freeze sidechained tracks

In ableton, audio effect on August 11, 2012 at 15:39

Ableton’s compressor, filter and gate supports sidechaining. It is a great feature, when you are looking for a more cohesive mix, fixing mixing issues or just looking for interesting sound effects. Especially when you work with products from Native Instruments you get a too high CPU load and as you probably know, that does compromise the timing of your DAW. Unfortunally Ableton don’t allow to freeze the tracks, which are used for sidechaining.

And here is a simple workaround. Maybe you like to control a filter by a drum beat, in order to modulate the sound of a synth. First of all listen to the drums and synth without sidechaining.

I added an Auto Filter to the synth track and enabled sidechaining from the drum track.

It sounds as expected – the drums do contol the filter:

And here is the problem: When you try to freeze one of the tracks, Ableton reject this with the message, that the track “cannot be frozen because of the routing”.

My workaround depends on Ableton’s routing. I create two new audio tracks and rout the audio from the old tracks to the new tracks by changing the Audio To in the In/Out Section. Know you have to switch the Monitoring of the new tracks to In, otherwise you will hear nothing. And the last two step are moving the Auto Filter to the corresponding new audio track and set the Audio From to the appropriate new audio track.

That’s all! Now you can freeze the old audio tracks and just the filter will calculated in real time. Personally, I prefer using groups instead of new audio tracks, because this approach is simpler and keeps the clarity.

I hope that’s help. alexander

Free auto tune vocal effect

In audio effect, vocals on July 21, 2012 at 17:15

For some time, auto tune is used as a starting point for creating special audio effects for example known by Skrillex or T-Pain. I never found such software  for free for Mac Os X, but today I read that even old versions of Garage Band can do this job. I think many Apple user do have an old version of this software.

So I tried the auto tune ability of garage band (version 4.1.1). And that is what I have done. By the way I do not know this software very well.

First of all create a new project and audio track. For that you have to press the plus button at the left botton and choose Real Instrument Track. The next step is importing your audio file. One way is dragging the file into the new audio track. After that you have to open the Track Editor. Just click on the scissors button at the left botton.

We are almost complete. At the right of the transport control is a drop down. Please choose Project. Than set Enhance Tuning to 100 % and check Limit to Key. Finally select the appropriate scale and listen to the result. 

The audio export is such simple. Go to the menu Share/Export song to disk and uncheck compress. Maybe you should change the preferences in order to get a 24 bit export. So go to GrageBand/Preferences/Advanced menu and set the Audio Resolution to Best. And here is my result.

The vocals without and with auto tune effect:

I think, the result is not bad. Unfortunately, there is just the major and minor scale implemented, but I think in most cases it will be enough. Of course this is not a plugin solution, on the other hand it’s free. Keep in mind that this is only a starting point for audio processing.

To be continued & best regards.

alexander

Create your own ambient & drone sounds

In audio effect, software on January 7, 2012 at 19:08

I few weeks ago I found a open source software called Paul Stretch. This application is build for extrem time stretching of music. Before I take a closer look, I will give you the download URL for many operating systems: Sourceforge.net/paulstretch/

The worst first, the GUI is not very nice, but there are very good smoothing algorithms implemented, so audio could by extremly time stretched without any unwanted artifacts. This tool helps you to create sound you know from drone or ambient music.

First of all here are some screenshots. As you can see there is the option to adjust many parameters.

Here are two examples I made. The first one is generated from a short vocal sample ..

.. and the second one is from a drum loop.

Many thanks to Nasca Octavian Paul!

Your Alexander

Pimp up your instrument

In ableton, audio effect on May 18, 2010 at 21:45

There are some ways to improve the sound of an instrument in Ableton Live. Here is one of it. The enhancement of a boring bass sound. This is the original clip:

In order to add some effects change to the “Track view”. Add a “Multiband Compressor” and Press CMD+G for creating a audio effect rack. Show the chain list and duplicate the default chain with (ALT+drag). Rename the three chains to “high”, “mid”, and “low” for example. Activate one chain und set the corresponding Compressor channel to solo.

After that you have to adjust the split frequency. I prefer to start with the low frequency. It’s a bit easier when you solo the corrosponding chain. In my case I finally increased the “Input” level of the “High” chain. You have now splitted the sound into three frequencies for further processing.

Audio rack

Add some effects to the low chain. So go the live devices browser/audio effects: “Mono” “Utility” to make sure that your single will be mono. Add “Drums kick Compressor” and activate the sidechain with your kick or drum channel.  I think this sound better

Compressor

Now add the “Filter delay” to the mid chain. View the screenshot for the parameters. Disable the “L+R” “Input”, set the “Pan” to “50 L” and “50 R”, “delay time” mode to “Time” and its value to “10 ms” and “1 ms” respectively. Here is a more spatial effect intended.
Copy this “Filter delay to the high Chain, too. Use ALT+drag again. Go back to the mid chain and add a “Reverb” “Living Room” for example.

Reverb

Finally add a “Overdrive” to the high chain. And this is the result:

This blog post based on the video tutoral by Quantize Cours “Splitting Frequencies“.

Alexander