Sigur Ros - Hjartao Hamast.avi

Main operations:

• Volume reajustment of sounds with different pan (remixing volumes)
• Musical analysis

Description:

First the volume of the keyboards is turned down, then the bass. Next we continue modifying the volume of different regions. A graphic pan-equalization is done in realtime, to emphasize each selected part. The mute mode applies the complementary equalization curve drawn in grey with the mouse.

Emery - Fractions.avi

Main operations:

• Vocals extraction/removal

Description:

First a Interchanel Phase Difference Filter is applied to extract the vocals and then it is refined with the Pan filter (some noises are muted with the latter). The video illustrates the whole process and ends up performing the opposite: vocals removal. However, notice that bass and kick drum are always extracted or removed. Both are also in phase and are panned in the center so there is no way to distinguish them from the vocals.

Louis Armstrong - What a Wonderful World.mp3

Main operations:

• Voice extraction
• Voice removal
• Musical analysis

Description:

In this piece of song, we insert two instances of the plugin in cascade and we program different operations using the automation of the sequencer. Everything gets done in a few minutes.

In the first part, we listen to the original song. The plugin instances are bypassed.

Next two instances of the plugin are activated in order to separate the voice from the background. The first one filters by phase difference. The second one, filters the remaining sound by panning. The vocals seem to have been recorded with a mono microphone without adding artificial stereo reverb and they are panned to the center, so they share the same phase in both channels and the whole process leads to a fairly good separation.

The separated voice has a high quality. It sounds reverbered, but listening carefully to the mixture, we realize that the voice is already reverbered in the mixture. This reverberation was probably caused by the room where Louis Armstrong recorded the vocals using a mono mic. This is one example of the utility of this plugin to analyze recordings and learn details about the recording processes of your favorite songs, as well as focus on the personal interpretation of Louis Armstrong.

Finally, in the last part, we pursue voice removal. We switch to "mute" both instances of the plugin and, we set to 0 the values of the region where the voice is present.

The Beatles - Help.mp3

Main operations:

• Voice extraction
• Voice removal

Description:

The same procedure described above is repeated with different parameter values.

Pearl Jam - Better Man.mp3

Main operations:

• Guitar remixing
• Musical analysis

Description:

We copy the original song into two tracks.

In the first track, we activate two instances of the plugin to obtain the guitar. The first instance filters by pan the zone where the guitar is located (left). Next a low-pass frequency filter is applied to remove the vocal residual noise. At this point we can listen only to the guitar. This is already a good result for a guitarrist who is trying to do musical analysis of the guitar, but we will go on and perform a remix of the song.

In the second track, we activate one instance of the plugin in "solo" mode selecting the complementary of the previously selected panning zone. Following this procedure, we are able to extract everything but the guitar.

Now that we have one track with only the guitar and one track with the rest of the song instruments, we apply a distorsion plugin to the guitar track after some seconds of clean guitar. A personal remix of the song is obtained. We selected a distorsion effect but any other effect might be chosen.