|
|
Posted by Charles Russell on 10/06/80 11:43
fred-bloggs wrote:
>>
>>What formats does the Zen player support? I had no luck trying to
>>find on the web detailed specifications of supported file formats for
>>the different players, even for Apple. The Ipod my kids gave me for
>>Christmas handles 16 kHz and even 11.025 kHz, as does the Goldwave
>>audio editor. If I had been spending my own money and gotten a
>>cheaper MP3 player, would I be unable to play my highly compressed
>>low-fidelity voice files directly without reformatting to bigger
>>files?
>>
>
> Changing the sample rate doesn't alter the size of the mp3 files.
My assumption - am I wrong? - is that a low sample rate effectively
filters out the high frequencies so that there is less data to compress,
allowing use of a lower kBps without making voice incomprehensible. My
understanding is that 11025 Hz corresponds to AM radio, 8000 Hz to
telephone. I find that at 11025 Hz, voice is clearly understandable at
16 kBps, though with noticable distortion. At 24 kBps my old ears can't
even hear any distortion.
>
> Does your Ipod support mp3 @ 8 khz? The Zen does.
The iTunes that came with the Ipod includes 8 kHz this as a menu option,
but I haven't tried transferring 8kHz files to the player. 11025 Hz
files work OK. I was afraid that iTunes would automatically convert my
highly compressed files when transferring to the Ipod, reducing the
effective storage capacity, but the file size seems to be unchanged on
the Ipod.
The MP3-CD player in my car supports 16 kHz but no lower (not 11.025 or
8), so I'm currently using that as my default, hoping that to be a
portable format for highly compressed recorded lectures. Evidently it is
portable to both my car player and to the Zen. I would not like to get
locked permanently into Apple.
Navigation:
[Reply to this message]
|