Re: 44.1kHz, 64Kbps, CBR mono encoding question

Stevo Brock <stevo-MIc6wW5p4IAu+uzj59/[email protected]>
Newsgroups gmane.comp.audio.mp3.encoders
Message-ID <[email protected]>
We're not using the command line interface, but the API.  To answer  
your question, in this case, we are calling:

			status = lame_set_mode(mPrivateData->mLameFlags, MONO);

-Stevo Brock
  Head of Development
  Monkey Tools
  www.monkey-tools.com




On Oct 19, 2007, at 12:54 PM, Manoj Bist wrote:

> Can you include the lame command line that you are using?
> By default lame assumes stereo mode, for mono you need to use  
> option '-m m'.
>
>
> On 10/19/07, Manoj Bist <[email protected]> wrote:
>>
>> Perhaps you should use -q 2 (this is the default).
>>
>> -q 0 is the highest quality and -q 9 is the lowest quality.
>>
>> On 10/19/07, Stevo Brock < stevo-MIc6wW5p4IAu+uzj59/[email protected]> wrote:
>>>
>>> Hi list,
>>>
>>> We are trying to use LAME to encode a WAVE file to a 44.1kHz,  
>>> 64Kbps,
>>> CBR mono mp3 file and are having trouble matching the quality of the
>>> same file produced by ProTools.
>>>
>>> Currently we are using the following settings:
>>> Source file 44.1kHz
>>> 64Kbps
>>> CBR
>>> Stereo Mode Mono
>>> Quality: 9
>>>
>>> which gets us pretty close, but there are still some slight audible
>>> artifacts.  The ProTools file has no audible artifacts at all.
>>>
>>> Interestingly, as quality setting is increased, the output actually
>>> gets worse.
>>>
>>> We don't know anything about the advanced acoustic settings.  Would
>>> that help our situation?
>>>
>>> Sample files are:
>>> -original WAVE: http://monkey-tools.com/downloads/01_11a.wav
>>> -encoded at lowest quality: http://monkey-tools.com/downloads/ 
>>> 01_11a%<http://monkey-tools.com/downloads/01_11a%25>
>>> 20Q9.mp3
>>> -encoded at highest quality: http://monkey-tools.com/downloads/ 
>>> 01_11a%<http://monkey-tools.com/downloads/01_11a%25>
>>> 20Q0.mp3
>>> -ProTools encoded: http://monkey-tools.com/downloads/ 
>>> 01_11a_Protools.mp3
>>>
>>>
>>> Any help or suggestions would be greatly appreciated.
>>>
>>> -Stevo Brock
>>>   Head of Development
>>>   Monkey Tools
>>>   www.monkey-tools.com
>>>
>>>
>>>
>>>
>>> _______________________________________________
>>> mp3encoder mailing list
>>> [email protected]
>>> https://minnie.tuhs.org/mailman/listinfo/mp3encoder
>>>
>>
>>
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