Starting with v1.5.036, the Pro version will support Audio Normalization. To enable this feature, check Enabled on:
Options-->Audio-->Audio Normalization-->Enabled

To change the default settings, click on
Options-->Audio-->Audio Normalization-->Settings...


There are basically two important settings: Buffer Length and the Max Volume Level.

Buffer Length:
To determine the loudness of a section of a song, an average volume of N samples will be computed. N is the Buffer Length.

Max Volume Level:
For any section of a song, if the average volume of N samples exceed V, the song's volume will be normalized to V. V is the Maximum Volume Level.

The above two settings are the same settings you see in VLC's preferences. Long Buffer Length allows short variation in volume to go through while short Buffer Length made the volume level throughout.


How to use this feature to achieve "Automatic Volume Control"?
The goal is to set the Max Volume Level low enough so that the softest song in your collection is unaffected by this feature. That is, say the softest song in your collection has the loudness of "1.6" and you set the Max Volume Level to 1.6. What this does is for your other songs, their volume will be normalized to 1.6 and hence the volume when playing any song in your collection is "1.6". You would then tune your mixer/amplifier so that a volume of "1.6" sounds good for your setup.

Notes:
This feature can be enabled/disabled at anytime and its settings can be changed at any time. However, it will only take affect starting on the next song. As with other graphic settings, "replay" is not considered the "next song". Next song is the next song on the queue or if the queue is empty, the next song you'll add to the queue.

Recommended Settings (Presets will be made available in v1.5.037):
For most songs, N=10 is optimal. For trance/remix music where the are high-base beat in between soft and silent duration, computing an average over 10 buffers sometimes allow loud bass beat to go through (since it has 9 silent buffer and 1 loud buffer, the average is still low). Allowing some loud beats to go through will cause noticeable imbalance in the overall volume.

Edited by user Sunday, August 05, 2012 3:30:09 PM(UTC)  | Reason: Not specified

Wow nhanh the
The link download hong duoc V :
http://download.tkaraoke.com/tkaraokePro/v1.5.036

Fixed

I dont quite understand the concept :(. Does it mean if i want lower audio songs to be loud, my max
Volume aka V has to be up high like 5 - 7 ?

Weird! Not to my ears. Hight max volume gives me higher audio
My setting 10, 6 vs yours 10, 1.6