audio volume in GKnot

[teplun]

How to adjust the volume of sound in GKnot encoding?

[llemor]

Afaik, there's no way you can adjust volume in GKnot. Only one thing I can assure you that audio encoding in GKnot is optimized for best quality using DSPguru's BeSweet, but still it depends on how you choose the audio setting(i.e. bitrate).

If you want it, you may encode audio separately using HeadAC3he with high boost factor. (I don't know if BeSweet can customized "boost" too) Beware of it, too loud will produce distorted sound.

[DSPguru]

Originally posted by llemor
(I don't know if BeSweet can customized "boost" too)have you ever clicked on the "boost" button on BeSweetGUI ;) ?

Originally posted by llemor
(I don't know if BeSweet can customized "boost" too)learn some histoy! BeSweet (AC3toMP3 (http://forum.doom9.org/showthread.php?s=&threadid=7245)) added WaveBooster functionality to its ac3->mp3 process about a month before hedac3he just started offering encoding to mp3.

[llemor]

Oh, yes! Sorry, I didn't notice it.

Thanks DSPguru.

[DSPguru]

Cheers :cool:

[yingx2]

What I do to adjust volume in Gknot is to change the audio parameters.

-heavy for louder volume and -light for lower volume (or simply do not perform any dynamic range normalization for even lower volume)

I'm fairly new to Gknot, so I hope I did not misunderstand your question.

[goauld]

Hi folks. I'm novice too using Gordian Knot (no in others tools where sound codec is easier that in Gordian...but quality is better in Gordian)

I'm not sure to understantd yingx2 answer. Where must I put these parameters? (I guess when I add the audio file...)

Cheerio!

[tiki4]

You have to put them on the azid command line. Just choose MP3 custom parameters when you add your audio track. I usually prefer to have something like:

-n1 -c normal -L -3db

The first parameter sets 'dialog normalization', the second is the interesting one, here you can change the dynamic range compression: Normal is the usual one that your DVD Player does when playing back. You may also choose heavy, light or inverse as far as I know, but I never used something else. The third parameter is the downmix of the effects channel into the left and right stereo channel. For more information check the guides for GordianKnot and the AC3 to MP3 guide of doom9.

Something else concerning volume: GordianKnot always uses azid or BeSweet to find a maximum gain value for the audio. If you do not use BeSweet then azid is used with the --maximize switch to perform a 2-pass decoding of the AC3 and finding the maximum possible value for the gain in volume.
If you choose to use BeSweet then the '-ota( -G max )' switch of BeSweet is used which does post-gain. That means the de/encoding to MP3 is done in the first place and the maximum possible gain is then performed on the final MP3. This procedure is much faster than the 2-pass azid method and you also don't get the large WAV files of the other method. Check against the DivX5 GordianKnot guide.

tiki4