Originally posted by BigGiRL:I wouldn't call myself an expert either, but I did some testing and experimenting a few years ago when I had to fill my iPod again. Most remarkable I found that when making 256kb/s mp3's of 16/48kHz audio (that is not the standard "cd" 16/44.1 audio), the cut-off was "safe" above the 16kHz and even left specefic bits dynamic up to 20kHz.
I boosted the spectogram settings for a more dramatic result:
MP3 (256kb/s 16/48kHz) D :
[image]
ORIGINAL (24/48) D :
[image]
The original "lossless" 24bit is, of course, all the way up to 24kHz and one might even notice some subtle diffences in brightness in the lower parts. All due to the smartness of the LAME algorithm (what a name! )
But, like I said, portrayed this way it looks far more dramatic than it sounds. A more realistic comparison is this:
MP3 (256kb/s 16/48kHz) R :
[image]
ORIGINAL (24/48) R :
[image]
What is "dark" here, you don't hear anyway...
My point: mp3's converted straight from lossless at a bit rate at 256 (or 320) are perfectly capabable of bringing you the music as you want to hear it in a practical way. In fact, I found that 224kb/s is also acceptable, with a cut-off only slightly below 16kHz...perfectsufficient enough for "old" analogue tape recordings...in my opinion...
Originally posted by LikeASong:[..]
Thanks! Very useful graphs. So, regarding the Chicago 87 bootleg, what would you say? Do you think it's a mp3>flac LAME conversion (pun intended)?
Originally posted by BigGiRL:CORRECTION:
The recording filed under 1980-11-13 Sheffield, U.K. - Limit Club actually belongs to 1980-10-15 Amsterdam, The Netherlands - Melkweg
...too bad...
Originally posted by BigGiRL:[..]
...but the good news is that this mislabeled "Milkyway 1980" is a serious upgrade over the one source (poor 128kb/s mp3's) we had in our database all this time...
So I added the lossless files of this "new found" 1980-10-15 Amsterdam - Melkweg (aka The Milkyway) + some 256kb/s mp3's for your portable device
PS: I hope to share later this year a fresh transfer of my own vintage tape-trade cassettes... I believe it will be an even further upgrade, if only for having it properly speed corrected...
Originally posted by LikeASong:[...] But isn't this new version speed corrected?
Originally posted by BigGiRL:[..]
...but the good news is that this mislabeled "Milkyway 1980" is a serious upgrade over the one source (poor 128kb/s mp3's) we had in our database all this time...
So I added the lossless files of this "new found" 1980-10-15 Amsterdam - Melkweg (aka The Milkyway) + some 256kb/s mp3's for your portable device
PS: I hope to share later this year a fresh transfer of my own vintage tape-trade cassettes... I believe it will be an even further upgrade, if only for having it properly speed corrected...
Originally posted by BigGiRL:[..]
Not according to lineage, no.
And if I check the "Spectral Pitch Display", it seems the notes are a quarter to low...
Originally posted by BigGiRL:UPDATE (vintage audience recordings):
1) I've added lossless flacs for the 1981-04-18 - Detroit, Michigan - Harpo's "JEMS master recording (update 2011)".
An awesome show with an unusual long setlist for that tour - The JEMS capture is just excellent (a bit clappy perhaps...)
2) An upgrade of the well known 1985-04-01 - New York, New York - Madison Square Garden recording has surfaced recently on dime.
It is a fresh transfer of a 1stGEN copy of the master and came with a complete lineage.
The recording had previously been attributed to Steve Vahey, but comparison with the new transfer learns that the sources are identical.
The "Steve Vahey" was actually a DAT transfer that @Milesian received from Steve V. back in 2001 and, as such, digitally seeded and re-seeded.
This new transfer from @elegymart attributes the recording to "Stonecutter crew" and has much more clarity and far more definition of the right channel. It still has a pretty loud near-by screamer (as has the "Steve V"...obviously), but mostly in between songs. The concert is very energetic and it surely has that MSG magic. I surely recommend this one from the vintage department