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FIFA World Cup 2010 would be great, if only those horrible vuvuzelas were not there. If you have a Mac, using the magnificent Audio Hijack Pro application by Rogue Amoeba, you can now filter out the vuvuzela sounds.

UPDATE: I have come across a much simpler and nearly perfect solution. A free Audio Unit plug-in called VuvuX by Prosoniq which is created just to remove vuvuzela sounds. To use it, follow these steps:

1. Connect the line-out of your TV to your Mac’s line in.
2. Select Default System Input in Audio Hijack Pro.
3. Click on Input tab and be sure that Built-in Input: Line In is selected. Now, start hijacking the sound by clicking Hijack.
4. Download this file from Sonicworx site, unzip and mount the dmg file.
5. Copy Vuvux.component file to ~/Library/Audio/Plug-Ins/Components folder of your Mac.
6. If Audio Hijack Pro is running, restart it.
7. Select the Effects tab, and add a VuvuX effect. You can add VuvuX by clicking on one of the squares and selecting AudioUnit Effect > Prosoniq > VuvuX. Default settings were successful enough for me, so I did not change anything after adding the effect. But you can change its settings clicking on Editor button.

If you somehow cannot use VuvuX, these are my former settings to remove the vuvuzela sound.

1. Connect the line-out of your TV to your Mac’s line in.
2. Select Default System Input in Audio Hijack Pro.
3. Click on Input tab and be sure that Built-in Input: Line In is selected. Now, start hijacking the sound by clicking Hijack.
4. Select the Effects tab, and add 5 AUParametricEQ effects as shown in figure 1. You can add AUParametricEQ by clicking on one of the squares and selecting AudioUnit Effect > Apple > AUParametricEQ.
5. Click the Editor button of the leftmost AUParametricEQ to open its editor. On the editor window, click on the yellow dot and a conversation balloon like pop up will be shown. Click on the number to the right of Freq and enter 233 Hz. After that, click on the number to the right of Gain and enter -20.0 dB. Lastly, click on the number to the right of Q and enter 19. Close the window.
6. For the second AUParametricEQ object, enter the following: Freq: 466 Hz, Gain: -20 dB, Q: 17 (figure 2).
7. For the third AUParametricEQ object, enter the following: Freq: 932 Hz, Gain: -20 dB, Q: 17 (figure 3).
8. For the fourth AUParametricEQ object, enter the following: Freq: 1864 Hz, Gain: -20 dB, Q: 18 (figure 4).
9. For the fifth AUParametricEQ object, enter the following: Freq: 3728 Hz, Gain: -13 dB, Q: 20 (figure 5).

You will notice that the vuvuzela sounds have dramatically decreased. Perfect! No more bee hives in your living room!

If you can only change the values by dragging the yellow dot, and not by clicking the numbers, you can click here and download the zip file containing the fxpreset files for each AUParametricEQ object, which you can load in the editor window.

You can see the effect in the following links (the cause of the clicks and skips in the example sounds is that, I was hijacking the sound of a network streaming program here, which was skipping, not the line in of the computer):

Before filtering
After filtering

PS: You can find the spectrum analysis I did using Audacity, with a vuvuzela sound sample, from one of the matches in the gallery below. Also, this page (in German) has helped a lot in confirming the exact frequency spectrum of the vuvuzelas.