Lame for car audio, --alt-preset 128 Options

[Squeller]

Hi,
for car audio I use lame3.96 with "--alt-preset 128 -q 2"

1. abr cause I need to know about file sizes
2. q2 because it should provide better quality as the presets default q3, but still is fast, not like q1/0

Is there something I could do better? I believe lower bitrates will give me some typical metallic noise artifacts on complicated tracks, I'm into electronica, such like Autechre - Gantz Graf, often very complex stuff.

Some people write about 3.90.3 being better than 3.96 in some cases?

[shadowking]

No need for switches like q2. If preset 128 isn't enough, try preset medium or standard. 3.96 is better than 3.90.3 one some samples and worse on others - its also quicker and I would stick with it.

[JeanLuc]

I would use -aps in my car stereo too ... that way, I could copy files from my music collection directly on a CDR without re-encoding.

Filesizes are not that important since I know (-aps creates files between 180 and 210 kbps average) that I can fit about 7 hours of music onto one 700 MB CD or 8 hours on one 800 MB CDR ... no need for 12 hours of music here.

[Squeller]

Theres need for 12 hrs of music on one cd-rw here:) In this environment with just cheap loudspeakers in the front and very typical 6/9" speakers on rear, ap-128 is really decent, believe me. I believe anything beyond ap-160 is simply overkill. IMO

[Kblood]

Well, I would suggest using Lame 3.96 and forgetting about that -q2 parameter.

That would be plain and simple:
--preset 128

Everyone will agree that playing with the -q parameter is not adviced, I think.

[Squeller]

OK, thanks ppl. I'm doing

--alt-preset 128
--alt-preset 144
--alt-preset 160

without any switches now. (Depending on how many songs to put on the cdrom)

[Jebus]

in the latest 128kbps test, they are using LAME 3.96 with "-V5 --athaa-sensitivity 1" to great effect. It is full VBR around 128kbps and seems to give much better results. That's my recommendation. Don't mess with the -q settings, btw.

[Squeller]

-V5 --athaa-sensitivity 1

On a first test, sounds good.Unfortunately consumes more than twice of time on encoding.

On alt-preset-128 and not too complex songs, I can hear like high frequency hissy echo noise in the background. How is this effect called?

This post has been edited by Squeller: May 17 2004, 16:00

[Kblood]

I don't know about that effect, but I wanted to point out that any number will work...

For example:
--preset 135

Just so you know, you don't need to stick to the "typical" numbers...

[Squeller]

Thanks kblood for clearing that up.
After encoding some complete albums here, -V5 --athaa-sensitivity 1 seems much superior to ap128.

= The bitrate averages at about 128, great.
- Encoding is slower (1.5 vs. 2.6 time/cpu here on a PIII500)
+ Theres kind of hf riging on ap128, much less on V5ats1.

All in all it seems to be a great ~128kbps setting!

This post has been edited by Squeller: May 17 2004, 16:56

[sls1776]

After encoding some complete albums here, -V5 --athaa-sensitivity 1 seems much superior to ap128.

All in all it seems to be a great ~128kbps setting!

The developers of LAME are friggin' geniuses, ain't they? LAME blows me away.

Sorry. I couldn't help myself.



- Scott

[Squeller]

BTW instead of using --preset 160 I'll rather use --preset medium.