Posted by fred-bloggs on 02/06/06 17:21

Curtis <sir_stimpyJAM@JAMhotmail.com> wrote in
news:85heu1dnv2v4qjgu8hnmngrdaks0q1m4rs@4ax.com:

> 'twas 05 Feb 2006 08:58:41 GMT, when "fred-bloggs"
> <fred-bloggs@hahahotmail.com> was compelled by mysterious forces of
> nature to write:
>
> Curtis <sir_stimpyJAM@JAMhotmail.com> wrote in
> news:bd5au153h3suqnn9bf9s2fefpt2o5p6cig@4ax.com:
>
>> 'twas 03 Feb 2006 22:37:39 GMT, when "fred-bloggs"
>> <fred-bloggs@hahahotmail.com> was compelled by mysterious forces of
>> nature to write:
>>
>>>"Matan" <Matan.1000@gmail.com> wrote in news:1138980006.866904.188340
>>>@g47g2000cwa.googlegroups.com:
>>>
>>>>> Hi,
>>>>>
>>>>> Anybody knows how much space (in KB and MB's) does it typically
>>>>> take to record voice into MP3? such as in USB MP3 players which
>>>>> can also record through their mic. On average, how much space does
>>>>> it consume per minute?
>>>>>
>>>>> I need to estimate which capacity gadget I need for 60 minute
>>>>> recording at a time, with good quality.
>>>>
>>>>
>>>> Approximately 1 MB/minute at 128 kbps, half that at 64.
>>>
>>>
>>> and half again for mono
>>>
>>
>>No
>>I'm afraid not, mono is the same size as stereo but better quality.
>
> Except that mono only has to be half the size for the same quality.
> 64kbps mono = 128kbps stereo
>

No, I'm afraid you got that wrong too. mp3 encoding uses mid/side
encoding so that encoding a stereo signal does NOT need twice the bitrate
of a mono encode.
http://www.mp3-tech.org/tech.html#joint
http://harmsy.freeuk.com/mostync/

But anyway the discussion was about filesize and it still remains that a
128 kbps stereo mp3 is the same *size* as a 128 kbps mono mp3.


--
fred

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