AAC控注意了Nero AAC coder最新版本1.5.1.0 附上FAAC ATRAC对比

grd125 发表于 2009-12-25 14:50:48

*************************************************************
*                                                       *
*Nero AAC Encoder                                     *
*Copyright 2009 Nero AG                               *
*All Rights Reserved Worldwide                         *
*                                                       *
*Package build date: Dec 17 2009                      *
*Package version: 1.5.1.0                            *
*                                                       *
*See -help for a complete list of available parameters. *
*                                                       *
*************************************************************
Usage:
neroAacEnc -if <input-file> -of <output-file>
Where:
<input-file>: Path to source file to encode.
            The file must be in Microsoft WAV format and contain PCM data.
            Specify - to encode from stdin.
<output-file> : Path to output file to encode to, in MP4 format.
==== Available options: ====
Quality/bitrate control:
-q <number> : Enables "target quality" mode.
            <number> is a floating-point number in 0...1 range.
-br <number>: Specifies "target bitrate" mode.
            <number> is target bitrate in bits per second.
-cbr <number> : Specifies "target bitrate (streaming)" mode.
            <number> is target bitrate in bits per second.
            When neither of above quality/bitrate options is used,
            the encoder defaults to equivalent of -q 0.5
Multipass encoding:
-2pass    : Enables two-pass encoding mode.
            Note that two-pass more requires a physical file as input,
            rather than stdin.
-2passperiod: Overrides two-pass encoding bitrate averaging period,
<number> : in milliseconds.
         : Specify zero to use least restrictive value possible (default).
Advanced features / troubleshooting:
-lc       : Forces use of LC AAC profile (HE features disabled)
-he       : Forces use of HE AAC profile (HEv2 features disabled)
-hev2       : Forces use of HEv2 AAC profile
            Note that the above switches (-lc, -he, -hev2) should not be
            used; optimal AAC profile is automatically determined from
            quality/bitrate settings when no override is specified.
-ignorelength : Ignores length signaled by WAV headers of input file.
            Useful for certain frontends using stdin.

经过漫长的等待 NERO终于更新了NERO的版本最新的版本是1.5.1.0此次更新内容为

2009-12-17 - Version 1.5.1.0
- neroAacEnc:
   - Improved encoding of sample rates higher than 48kHz
   - Solved compatibility issues with some hardware devices
   - Write iTunes compatible gapless data
   - Enabled preserving of very quiet high frequencies at high bitrates
   - Write the encoder settings to metadata
   - Executable size reduction
- neroAacDec:
   - Improved error handling
   - Speed up
- neroAacTag:
   - Support 3GPP tags
   - Support Sony Memory Stick tags
   - Improved cover art support
   - Improved support for files with multiple tags in different formats (ND,iTunes,3GPP,Sony Memory Stick)
   - Writes iTunes tags by default, added switch to enable ND tags

新版本的究竟如何呢？
我做一个简单的实验音乐来自月光中的三套车
原版FLAC频谱
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407469843750.jpg
1.3版的NERO AAC
448
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407685156250.jpg
512
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407694062500.jpg
1.5版的Nero AAC
448
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407702187500.jpg
512
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407708906250.jpg
FAAC Q500对比测试
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973408208437500.jpg
ATRAC 3 PLUS 352KBPS
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407847343750.jpg
结论：新版的NERO AAC结束了高频一刀切的现象使得音乐表现更加全面但是低频跟中频的信息量相对减少从而从听感上来说肯定是有损的但是对于保真度来说这种做法非常值得称赞本文加入了 ATRAC3 PLUS 352以及FAAC Q500的对比
这种两种格式同样表现不俗非常值得称道

1.5版 NERO AAC安装以及使用方法：
本文以FB2K 0.8.3 FINAL 纪念版为例
1 解压缩安装包里的WIN32的三个EXE文件（一般都是WINDOWS操作系统吧- -）
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407715781250.jpg
2复制到FB2K的目录下
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407756250000.jpg
入上图 FB2K参数设置添加选择可执行命令文件
蓝色部分512000是512的编码
448000是448的编码
红色部分的要注意要选择NEROAACENC.EXE
大家根据需要自己修改
格式为M4A
保存点确定然后就可以使用新版转换了

个人听感随笔：
可能是长期喜欢上了ATRAC 感觉几个格式差别不大从频谱上看的话可能差异不小
FAAC依然是高频占有优势而NERO虽然改善了高频但是依然不足于FAAC
同样的FAAC更是不敌低频上的NERO AAC这样来说听感上应该是NERO更好
而ATRAC 3 plus缺介于NERO跟FAAC之间我个人认为听感最好的
但是目前看频谱来说非常中庸显得个性不足
转码时间上来说三者都要超过MP3的速度非常不错的

ATRAC转码软件 SonicStage CP 4.4
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407749843750.jpg
转换完的AAC们
http://photo.tuchuan.com/myfile/2009/12/25/normal_633973407742812500.jpg
1.5.1版NERO AAC CODEC下载地址：
http://www.rayfile.com/files/bc425c14-f108-11de-9f26-0014221b798a/
1.28版 FAAC下载地址：
http://www.rayfile.com/zh-cn/files/245ce45c-8c74-11de-8368-0014221b798a/
全文完

sztat 发表于 2009-12-25 20:24:04

不错，学习啦。
收藏，谢谢！

xyyuan 发表于 2009-12-26 12:21:32

学习下

bushinvren 发表于 2010-1-11 15:42:16

学习下

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AAC控注意了Nero AAC coder最新版本1.5.1.0 附上FAAC ATRAC对比