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Topic: MP3 frequency and MP3 player output frequency (Read 4399 times) previous topic - next topic
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MP3 frequency and MP3 player output frequency

I bought a Samsung YP-Z5AS MP3 player a couple of days ago. According to the specifications, the Output Frequency Range is 20Hz - 20KHz.

Would there be a noticeable difference in the sound quality if I converted all my WMA's (192kbps) to VBR MP3's with the frequency set at 22KHz? I'm just trying to save a lot of space on the 4GB player while keeping the quality. All the converted files would go on a different hard drive and the originals would be kept.

So does anyone see a problem with this?

MP3 frequency and MP3 player output frequency

Reply #1 –
VBR MP3 with frequency set at 22kHz?

I'm afraid I can't follow you on that.

MP3 frequency and MP3 player output frequency

Reply #2 –
Quote from: Jerfer on
According to the specifications, the Output Frequency Range is 20Hz - 20KHz.

That doesn't mean much, and should have no bearing on your file conversion decisions.

Quote from: Jerfer on
Would there be a noticeable difference in the sound quality if I converted all my WMA's (192kbps) to VBR MP3's with the frequency set at 22KHz?

If you mean a sample rate of 22KHz, then there will certainly be a noticeable difference.

MP3 frequency and MP3 player output frequency

Reply #3 –
You need (more than) twice the sampling rate of the maximal frequency you want to reproduce.

So in your case, you want the MP3's or WMA's to be at least sampled at 40kHz. So just use the standard 44.1 or 48kHz.

MP3 frequency and MP3 player output frequency

Reply #4 –
Quote from: pepoluan on
VBR MP3 with frequency set at 22kHz?

I'm afraid I can't follow you on that.


By that I meant an MP3 encoded with the Variable Bitrate setting.

Alright thanks guys.

MP3 frequency and MP3 player output frequency

Reply #5 –
@Jerfer: If the Samsung player you're using support Ogg Vorbis, I recommend experimenting with Ogg Vorbis low bitrates, e.g. -q 1 up to -q 4.

MP3 frequency and MP3 player output frequency

Reply #6 –
Quote from: Jerfer on
I bought a Samsung YP-Z5AS MP3 player a couple of days ago. According to the specifications, the Output Frequency Range is 20Hz - 20KHz.


The MP3 player specification refers to the sound frequency, not the digital sampling frequency.

Quote from: Jerfer on
Would there be a noticeable difference in the sound quality if I converted all my WMA's (192kbps) to VBR MP3's with the frequency set at 22KHz?


Because of the way digital representation of sound works, if you encoded everything with a sampling rate of 22KHz, you would end up with a frequency response range of 0-11kHz, which, in short, would suck.  Stick with the default sampling rate when encoding unless you have good reason not to.