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Topic: Multiformat @ 128kbps - test discussion (Read 55315 times) previous topic - next topic
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Multiformat @ 128kbps - test discussion

Reply #250 –
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If samples are to be replaced, it would be more efficient to replace from the bottom (highest average bitrate first.

If Bartok_strings2 should be replaced with other sample for that reason, I can submit Shostakovich instead. (I prefer Bartok.)

Shostakovich bitrates:

mp3: 146
mpc: 139
vorbis: 131

The replacement samples, if any, should average below 128, preferably by 10 kbit/s or more.

ff123

Multiformat @ 128kbps - test discussion

Reply #251 –
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The replacement samples, if any, should average below 128, preferably by 10 kbit/s or more.

OK, I'll search for more quiet one. Not sure if it also will be a hard-to-encode though.

Edit:Check Webern.

Multiformat @ 128kbps - test discussion

Reply #252 –
Here is a hip-hop sample, from Mystikal's "Let's Get Ready" album.  The title is extra on the CD and untitled, but if I had to give it a title, it would be "Are You Lookin' for Me?"

looking4me

bitrates
mp3: 114
mpc: 105
vorbis: 120

ff123

Multiformat @ 128kbps - test discussion

Reply #253 –
Quote
Quote
The replacement samples, if any, should average below 128, preferably by 10 kbit/s or more.

OK, I'll search for more quiet one. Not sure if it also will be a hard-to-encode though.

Edit:Check Webern.

That should probably help

I calculate:

mp3: 120
mpc: 128
vorbis: 129

ff123

Multiformat @ 128kbps - test discussion

Reply #254 –
Here's another rather low bitrate sample:

ExitMusic

"Exit Music (For A Film)" by Radiohead from the album "OK Computer"

male vocal with guitar

mp3: 103
mpc: 111
vorbis: 120

ff123

Multiformat @ 128kbps - test discussion

Reply #255 –
Sorry, but I'm not really planning to change samples for this test anymore. Three reasons:

- The first try at this test was a big mess. I'll try to fix all my mistakes this time. So, I won't change any of the test settings, to avoid new errors and mistakes creeping in.

- Samples that use lower bitrate are usually easier-to-encode samples. I don't like the idea of replacing problem cases with easy cases. It would make testing those samples too difficult to non-golden-ears, and would probably make the test less meaningful overall.

- I don't care about critics anymore. Let them drool and whine all they want. If someone wants to believe my tests, he's welcome to do so. If he doesn't, he should just ignore it. And if he doesn't ignore it, I'll be offensive and mean.

Thank-you for searching for samples, anyway.

Regards;

Roberto.

Multiformat @ 128kbps - test discussion

Reply #256 –
I agree with Roberto.  Finding samples with lower bitrate ultimately means finding easier-to-encode samples.
 

Multiformat @ 128kbps - test discussion

Reply #257 –
IIRC the settings used are supposed to bring bitrates of "normal" music around 128kbps and not of problem samples. So there's really no point in changing samples anyway. More difficult to encode samples should be used IMHO since they are the ones that will be given lower scores and make the statistical result more significant. Easy to encode samples would probably have too many 5.0 scores.