lame 3.96.1 and the "chipmunk" effect

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lame 3.96.1 and the "chipmunk" effect

Joe Auty
Hello,

When I encode mp3s using Lame 3.96.1 --abr 56 and import these files  
into software such as Flash, these files play back sounding like a  
chipmunk (i.e. the pitch is too high). When I encode the same files  
using Lame 3.93 using the same arguments (i.e. --abr 56) I don't have  
this problem.

How is Lame 3.93 different than 3.96.1? Am I stuck using this much  
older version of Lame, or is there a fix with the new version?







-----------
Joe Auty
NetMusician: helping musicians exploit new communication mediums
http://www.netmusician.org
[hidden email]

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Re: lame 3.96.1 and the "chipmunk" effect

Takehiro Tominaga
From: Joe Auty <[hidden email]>
Subject: [mp3encoder] lame 3.96.1 and the "chipmunk" effect
Date: Thu, 12 May 2005 01:08:39 -0500

> How is Lame 3.93 different than 3.96.1? Am I stuck using this much  
> older version of Lame, or is there a fix with the new version?

LAME3.93 uses 22.05kHz as sampling rate when --abr 56.
LAME3.96 uses 24.00kHz as sampling rate when --abr 56.

check "-s 22" option with lame 3.96.1.
If the problem is solved, the player you used may have a problem
with 24kHz mp3.

If not, I have no idea.
--
Takehiro TOMINAGA // may the source be with you!
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Re: lame 3.96.1 and the "chipmunk" effect

Joe Auty
Hmmm...

When I run:

lame --abr 56 -s 22.05 oldfile.wav newfile.mp3

The output indicates that it is ignoring my request to encode at  
22.05kHz and is encoding at 24Khz anyway. Is there something wrong  
with this syntax, or does lame 3.96.1 also ignore sample rate arguments?


On May 12, 2005, at 11:49 AM, Takehiro Tominaga wrote:

> From: Joe Auty <[hidden email]>
> Subject: [mp3encoder] lame 3.96.1 and the "chipmunk" effect
> Date: Thu, 12 May 2005 01:08:39 -0500
>
>
>> How is Lame 3.93 different than 3.96.1? Am I stuck using this much
>> older version of Lame, or is there a fix with the new version?
>>
>
> LAME3.93 uses 22.05kHz as sampling rate when --abr 56.
> LAME3.96 uses 24.00kHz as sampling rate when --abr 56.
>
> check "-s 22" option with lame 3.96.1.
> If the problem is solved, the player you used may have a problem
> with 24kHz mp3.
>
> If not, I have no idea.
> --
> Takehiro TOMINAGA // may the source be with you!
>

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Re: lame 3.96.1 and the "chipmunk" effect

recutecu
Hmmmm...... double hmmmmm.....

it seems that nobody actually is reading my message.... I just need a
little tiny help....

Subject: help please
Hello there, I just downloaded iTunes-LAME Encoder for Mac and have no
idea how it works.

The only thing I want to do is convert a .wma file to .mp3 or AAC audio file.

Thank you very much.



On 5/12/05, Joe Auty <[hidden email]> wrote:

> Hmmm...
>
> When I run:
>
> lame --abr 56 -s 22.05 oldfile.wav newfile.mp3
>
> The output indicates that it is ignoring my request to encode at
> 22.05kHz and is encoding at 24Khz anyway. Is there something wrong
> with this syntax, or does lame 3.96.1 also ignore sample rate arguments?
>
>
> On May 12, 2005, at 11:49 AM, Takehiro Tominaga wrote:
>
> > From: Joe Auty <[hidden email]>
> > Subject: [mp3encoder] lame 3.96.1 and the "chipmunk" effect
> > Date: Thu, 12 May 2005 01:08:39 -0500
> >
> >
> >> How is Lame 3.93 different than 3.96.1? Am I stuck using this much
> >> older version of Lame, or is there a fix with the new version?
> >>
> >
> > LAME3.93 uses 22.05kHz as sampling rate when --abr 56.
> > LAME3.96 uses 24.00kHz as sampling rate when --abr 56.
> >
> > check "-s 22" option with lame 3.96.1.
> > If the problem is solved, the player you used may have a problem
> > with 24kHz mp3.
> >
> > If not, I have no idea.
> > --
> > Takehiro TOMINAGA // may the source be with you!
> >
>
> _______________________________________________
> mp3encoder mailing list
> [hidden email]
> http://minnie.tuhs.org/mailman/listinfo/mp3encoder
>
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Re: lame 3.96.1 and the "chipmunk" effect

Joe Auty
I don't think that LAME will decode a Windows Media file, only WAV  
files. You could use several different audio ripping software though  
to convert WMA to something else. For instance:

http://www.rogueamoeba.com/audiohijack/

Once the WMA is in WAV or AIFF format, you can use LAME to encode  
your MP3. If audio quality is not a priority, you'd probably be  
better off doing this in iTunes though - the iTunes decoder is faster  
than LAME.

If you have any specific questions about LAME, why don't you ask them  
so that we don't have to write you a complete manual?


On May 12, 2005, at 7:51 PM, recutecu wrote:

> Hmmmm...... double hmmmmm.....
>
> it seems that nobody actually is reading my message.... I just need a
> little tiny help....
>
> Subject: help please
> Hello there, I just downloaded iTunes-LAME Encoder for Mac and have no
> idea how it works.
>
> The only thing I want to do is convert a .wma file to .mp3 or AAC  
> audio file.
>
> Thank you very much.
>
>
>
> On 5/12/05, Joe Auty <[hidden email]> wrote:
>
>> Hmmm...
>>
>> When I run:
>>
>> lame --abr 56 -s 22.05 oldfile.wav newfile.mp3
>>
>> The output indicates that it is ignoring my request to encode at
>> 22.05kHz and is encoding at 24Khz anyway. Is there something wrong
>> with this syntax, or does lame 3.96.1 also ignore sample rate  
>> arguments?
>>
>>
>> On May 12, 2005, at 11:49 AM, Takehiro Tominaga wrote:
>>
>>
>>> From: Joe Auty <[hidden email]>
>>> Subject: [mp3encoder] lame 3.96.1 and the "chipmunk" effect
>>> Date: Thu, 12 May 2005 01:08:39 -0500
>>>
>>>
>>>
>>>> How is Lame 3.93 different than 3.96.1? Am I stuck using this much
>>>> older version of Lame, or is there a fix with the new version?
>>>>
>>>>
>>>
>>> LAME3.93 uses 22.05kHz as sampling rate when --abr 56.
>>> LAME3.96 uses 24.00kHz as sampling rate when --abr 56.
>>>
>>> check "-s 22" option with lame 3.96.1.
>>> If the problem is solved, the player you used may have a problem
>>> with 24kHz mp3.
>>>
>>> If not, I have no idea.
>>> --
>>> Takehiro TOMINAGA // may the source be with you!
>>>
>>>
>>
>> _______________________________________________
>> mp3encoder mailing list
>> [hidden email]
>> http://minnie.tuhs.org/mailman/listinfo/mp3encoder
>>
>

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Re: lame 3.96.1 and the "chipmunk" effect

bouvigne
In reply to this post by Joe Auty
Joe Auty a écrit :
> lame --abr 56 -s 22.05 oldfile.wav newfile.mp3
>
> The output indicates that it is ignoring my request to encode at  
> 22.05kHz and is encoding at 24Khz anyway. Is there something wrong  with
> this syntax, or does lame 3.96.1 also ignore sample rate arguments?

-s is an option to specify the input sample rate in case of raw data.
In case of wav file, the sample rate is stored inside the file, so Lame
knows it.
If you want to change the OUTPUT sample rate, then use --resample 22.05

Regards,


--
Gabriel Bouvigne
www.mp3-tech.org
personal page: http://gabriel.mp3-tech.org
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