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molski Posts: 67

I'm gonna buy a MS Duo stick 128mb so that I can listen to music when I go on vacation. But now I have a few little questions about that?

What is a "good" bitrate to convert MP3 files into OGG? I used 128 and that sounded good. OGG Files are smaller, so there is almost no doubt that I gonna use OGG instead of MP3. But what is the "lowest bitrate limit" to use with OGG files? 128, or can I can use lower, like 96 and still have "CD Quality" ?

But...., an example:

I got 2 MP3 files of the same length, lets say 4 minutes. One of the MP3 files has a bitrate of 128 and te other MP3 file a bitrate of 192.
If I both convert these files to OGG with a bitrate of 128, does the quality in the OGG files will be different? And the filesize? Does it matter for the filesize what bitrate the original (the MP3) files have?

Molski
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Posted: 2004-07-07 17:11:43
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kramer_hpal Posts: 158

"I got 2 MP3 files of the same length, lets say 4 minutes. One of the MP3 files has a bitrate of 128 and te other MP3 file a bitrate of 192.
If I both convert these files to OGG with a bitrate of 128, does the quality in the OGG files will be different?"
---no the quality will be same.
"And the filesize? Does it matter for the filesize what bitrate the original (the MP3) files have?"
--The filesize will be same too. it doesnt matter the bitrate of source file.

i tried 60 bitrate and mono sound. there is no difference between this and 192kbps stereo mp3 file if u listen with loud speaker in the phone. but if u listen with headphones, i recommend u stereo and minimum 92kbps. cos, the speaker of phone cant give the sound exactly even its 500000kbps:D.
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Posted: 2004-07-07 17:48:01
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a_p_a_n_d_e_y Posts: 308

As a rule of thumb, you can always rip oggs at a lower bitrate than a similar quality mp3. In fact converting a 128 kbps mp3 to a 128 kbps ogg is not very useful.

Here is why:
A normal mp3 is constant bitrate (CBR)... ie, 128kbps mp3 consumes 128 kilo bits for 1 second of sound.
On the other hand ogg is variable bit rate (VBR). So, a 128 kbps ogg will mean that the average bitrate will be kept at around 128kbps. So, when there is lesser detail in your sound and less data can represent that without a loss of quality ogg encoder will use lower one. When music changes rapidly and more data is needed to represent the change a bitrate higher than 128 will be used. By law of averages, it will create a file size roughly equal to that of 128 kbps CBR.

Now, if your source is 128kbps mp3, the maximum detail it has is 128 kilo bits per second... and hence whatever you rip will be lower than this. I have practically seen a 96 kbps ogg as good as a 128 kbps mp3 (however even lower might be possible... depends on how much u experiment and more on the type of music)

I hope I was usefully informative

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Posted: 2004-07-07 17:54:18
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p900 lover Posts: > 500

on the topic of ogg files how do i convert mps to ogg??

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Posted: 2004-07-07 17:56:25
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a_p_a_n_d_e_y Posts: 308

I use dBpowerAmp
There are other applications around as well. Just do a search to find older topics discussing conversion software

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Posted: 2004-07-07 17:58:48
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Greeny Posts: 187

dbpower amp is the boss for converting mp3 to .ogg files......
44100 hz = frequency
64 kbps
and set at constant bitrate

creates files half the size of mp3 and with no loss in quality! (for me anyway!)
goodluck
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Posted: 2004-07-07 20:54:42
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molski Posts: 67

Apandey, Greeny and the rest.....ThanX!!

Now I know what to do

Regards,

Molski
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Posted: 2004-07-07 21:54:39
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molski Posts: 67

I converted some D12 MP3 files and they still sound perfect at 96 kbps after that I did one at 64 and it still great! It has gone from 5,7MB to 1,8MB

Now I only need is a converter from 2.5 to 3.5 to use my own Zennheiser headphones. Then it would really kick ass!

Molski
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Posted: 2004-07-07 22:43:00
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Greeny Posts: 187

buy an adaptor to fit in your phone - i got one from e-bay £3.50 and i use any h/phones i like! (make sure you get closed cup headphones much better sound!)
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Posted: 2004-07-08 00:39:28
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grex Posts: 401

@Greeny you are 100% correct, the 64k oggs sound just fine through the 'phones
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Posted: 2004-07-08 02:41:22
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