The volume of each track, whether background music or Sound object, can be adjusted individually. This is done in the Timeline via round marker points.

1 Change volume curve

The volume can be varied within a piece of music with the help of a line. The up and down of the line corresponds to the variation of the volume. The higher the waves in the envelope the louder.
To make this line visible, click with the mouse on the waveform of the track. Each click creates a point that can be moved. If you click a point with the right mouse button, it will be deleted. When deleting the last point, the line will be removed.

2 Matching the volume of multiple sounds

When using music and sounds from different sources, it often happens that they have different output volumes. The volume of each individual song of the background music, of the video sound, of spoken image comments and sound objects can be lowered or increased individually. If you use the unit Decibels normalized (dB!) instead, they all get the same volume level.

The volume unit for each sound can be switched by clicking on it. Here, 1- = 100% = 1000‰. This corresponds to no change in the existing volume of the inserted sound. Likewise, you get no change to your volume at 0 decibels (relative).

•+1 dB is estimated to be the smallest volume change perceptible to the human ear.

•+6 dB makes the volume perceived about twice as loud.

•-6 dB means a halving of the perceived volume.

To set all sounds to a uniform volume level, give them the unit decibel normalized (dB!). Then select for all sounds e.g. ±0 dB!, so that all have an identical volume. For Decibel normalized (dB!), the existing sound in the background is first maximized if possible (i.e. the volume of the sound is raised so that the loudest part corresponds to 100%) and mathematically changed to the loudness target value.

Example: You have three tracks in the background music track. When playing, the first one is okay in terms of volume, the second one is too quiet, the third one is louder again. If you now enter ±0 dB! for each title in the background music title list, all titles will be perceived with a uniform volume. To make all titles uniformly somewhat quieter, you could then enter -3 dB(!), for example. (A higher value than ±0 is not recommended, this could lead to overdriving of the first and third title).

3 Crossfading: Two titles merge into each other

If you want two titles to merge smoothly, use the volume curve. Set two points on the Volume curve at the end of track 1. Do the same at the beginning of track 2.
Now lower the second point in Title 1 so that it is far down (volume at 0%). Repeat this for the first point on title 2. The lines of the volume curves now look like a V.
Now move the titles on top of each other in such a way that the lines become an X. This explains the meaning of the title "Crossfading" (the English word "cross" means "cross"). You can only move the music on top of each other if the mouse pointer changes to a cross with four points. To do this, it is best to aim the mouse at the area of the music where the song name is located.