Welcome Guest ( Log In | Register )

alt-preset standard problem samples, with Lame 3.93.1 and before.
post Jan 19 2002, 11:23
Post #1

Group: Developer
Posts: 2797
Joined: 22-September 01
Member No.: 6

There are lots of cases when alt-presets or any mp3 are not transparent, but I gather few "easy" but distorted cases which should be used to further tweak and check alt-preset standard quality.

I'll put more samples here in the future so that those are easier to find and can be found from the same place.
My intention is not to list clips with very hard attacks, other known extreme clips or clips which cause great trouble for every codec.
More like "easier" cases which in my opinion should be handled better by alt-preset standard.

Clip found by Wombat. Introduces added noise from 1.2-2sec and 4-6sec.

Although soft attacks, still introduces pre-echo hiss (most noticeable in the beginning).

Dogwhistle is chirping.

Audible distortion in the background.

In all 4 vbr presets distortion is added, mostly with the "e" when she sings "become".

Very bad distortion at about 3.5 sec.

This post has been edited by JohnV: Dec 5 2002, 09:22

Juha Laaksonheimo
Go to the top of the page
+Quote Post
Start new topic
post Apr 3 2002, 18:20
Post #2

Group: Members
Posts: 1298
Joined: 7-October 01
Member No.: 235

Hi all!

Thanks for testing this ff! No one seemed to be interested otherwise!

Dibrom you´re right! -Z makes it even better than only nsbass -8 but
also bigger.

Is there an easy way to test around with nspsy2? The last time i did i
had to do everything in two passes. Also it doesn´t make much sense to test
nspsy improvements with standard switches. The produced nspsy2 files should
at least implement the more tuned short block allocation from the alt presets
to have a fair compare, or does nspsy2 implement this?


Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 4th October 2015 - 21:20