Ogg Vorbis is a popular free (as in free from patents) encoder, of a
much higher quality than Mp3 - most players support Ogg through a plug-in
and even portable player Ogg support is surfacing (Rio Karma, Neuros
Audio, iRiver). Ogg supports full ID Tagging where track
information (Artist etc) is imbedded within the music file. This current
release is on a par with AAC (mp4) and WMA 9, for encoding I would
recommend using Variable Bitrate q .6 which gives about 192 Kbps.
This Ogg Vorbis Codec installation enables dBpowerAMP
Audio Player (dAP) to play Ogg files and dBpowerAMP
Music Converter (dMC) to convert to and from Ogg.

Encoding - Ogg
files fall into these distinct categories:
-
Variable Bitrate (VBR).
Ogg files are made up from 100's of small audio chunks, called frames.
Whilst encoding a VBR file, the encoder decides which bit rate to use
for each frame. Bit rates can drop down to lower value when it is
warranted (if there is not much sound going on), and switch up to a
higher bit rate when required. VBR files should be used when encoding
ogg files unless there is a specific reason not to,
-
Constant Bitrate (CBR),
a constant bit rate is used throughout the encoding process,
-
Average Bit Rate a
little like VBR except with VBR the end file size is not known (could
be small, could be big), ABR is VBR with known end file size, it works
by regulating how variable the compression is, so at the end of the
compressing the average is exactly the value specified.
Bitrate - Measurement
(in 1000 bits per second) of how much compressed audio data flows per
second. Higher bit rates files are of a higher quality than lower bit rate
files.
Frequency - number of
samples per second to be encoded, 44100 happens to be the exact frequency
Audio CDs play using. [as source] allows the output frequency to be
set the same as the input frequency.
Channels
Stereo - two channels of sound,
enables instruments to appear separated from one another, Just imagine
if we only had one ear then there would be no need for stereo...
Mono a recording with only a
single channel of information. A question that is often asked Why is
my 128kbps encoded Mono file, not half the size as a 128kbps encoded
Stereo file? The answer is simple, to keep the Kbps rate constant,
the mono file is encoded at twice the quality rate as the stereo file
(Kbps measurement is for the whole recording regardless of the number of
channels, so Per Channel Kbps = Kbps / Number of Channels).
[as source] sets the channels to
match the input channels.
|
Advanced Tagging Configuration
|
|
From dMC Configuration (start
>> programs >> dbpoweramp music converter >>
configuration) ID Tag Options reveals tagging options:
Ogg Vorbis
Uppercase Tag Elements certain
programs (such as the iRiver database manager), will not recognize ID
Tags unless they are all uppercase, ARTIST would work, but Artist would
not, this option fixes this deficiency.
Complete Version Changes
|