dBpoweramp Music Converter R16.5

[Karamjit]

dBpoweramp is a collection of fully-integrated audio software from Illustrate, written by Spoon. The main dBpoweramp product is dBpoweramp Music Converter, with many additional add-ons available. dBpoweramp CD Ripper is the corner stone of dBpoweramp Music Converter's suite of audio tools, designed to meet the needs of hobbyists, enthusiasts or audio professionals. Key features include PerfectMeta, AccurateRip, Secure Ripping, Multi-CPU Encoding.

Thanks to ARMOUR for the update.

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[Dce3480]

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Why a Variable Bit Rate?

There are still people busy spreading lies about audio quality issues involving MP3, VBR and LAME. That is one of the reasons why you still see so many CBR (Constant Bit Rate) MP3 files around, which is, well, just very stupid;

VBR really is a no-brainer. Near the beginning and ending of a song (assuming it starts and ends softly), where the volume is lower, and the music is less "demanding" in terms of its encodability, it makes sense to drop the bit rate, simply because there's not much there to encode, and the wasted space is overkill. In the middle of the song, where it may be more complicated, the idea of giving the encoder the option of "bumping up" the rate on a frame-by-frame basis is great! You may end up with a file that's the same overall size as a 160kbit/s CBR, but that uses frames as low as 32 on the really dead parts, and as high as 320 on the really tough parts. The bitrate is dynamically adapting to keep the quality constant. To know that the whole file isn't bloated where it isn't necessary, is a real bonus. On top of that:
If you've ever listened to an MP3 of a complex song at a very low bitrate, you've probably heard the famous watery swishing sound, and artifacts in the treble or high end of the spectrum (such as cymbals), or the muffled tones at bass sounds. With Variable Bit Rate you can keep the song at a stable relative quality level by adjusting the compression rate according to the complexity of the encoded audio. Ogg Vorbis (and VBR in MP3) does this by automatically tuning a compression level for each particle of the input based upon the relative complexity of that slice of sound. An example of what VBR is about: (using EncSpot)

As you see there are fragments where the audio required 96kbit/s to sustain quality, and there are parts when the mp3 uses 320kbit/s to sustain that same quality. Now, as a CBR freak, what would you do? Either you choose to encode 160kbit/s and have some horrible sounding seconds in your music clip, or you're left to encode this clip in 256 or even 320 kbit/s, wasting a lot of bits in the process. So:
Dear world, STOP being afraid to use VBR 😉 it is fully supported and legal (even though some software has a hard time accepting this). You should be using VBR because the goal is to keep the quality at a consistent level throughout the song: a quality that has no audible artifacts to the average listener using relatively good equipment, and still have good file size savings. This is the holy grail of audio compression, and something that is simply not possible with CBR. With CBR you'll have artifacts that any untrained ear can hear at some point in almost any given song. If you encoded digital silence, you'd still be encoding it with the much used bitrate of 192kbit/s. In Ogg Vorbis you could have encoded the silence at 4kbit/s!
The Ogg Vorbis VBR is not the same as the one used for L.A.M.E. MP3 though. For instance, LAME doesn't rely on its psychoacoustic interpretations, it only uses them as suggestions. In Vorbis o.t.o.h. the psychoacoustic analysis is what determines how many bits get used.

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Settings we recommend for LAME/MP3 (best quality/size ratio in our opinion):
lame in.wav out.mp3 -V2 --vbr-new -q0 --lowpass 19.7
To give you an indication; If the original WAV is 100 MB, the resulting MP3 will be around 11 MB with this commandline.

LAME, like Ogg Vorbis, is still improving. For a bleeding edge on quality, special commands for certain LAME-versions are often necessary. So, please note that we're only giving you commandlines for use with the lame-release accompanying RazorLame on THIS page. Amazingly high quality (from big to small sized) MP3-files can be created using:

-V2 --vbr-new -q0 --lowpass 19.7 -b96
-V3 --vbr-new -q0 --lowpass 19 -b96

-V5 --vbr-new -q0 --lowpass 18
-V6 --vbr-new -q0 --lowpass 17 -b112

These commandline options can be used the way you see in the Razorlame screenshot above.

[Plexxor]

dBpoweramp Music Converter Portable R16.5 32-64 bit FoxxApp

 

 

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