CD vs MP3 Quality.

4005 Views 27 Replies 15 Participants Last post by samurray, Jun 12, 2005

57

Discussion Starter · Jun 10, 2005

In an OTA thread yesterday, several people brought up this issue. Those posts were deleted since they hijacked an OTA thread.

I'd like to start that "debate" again here. (the people who were discussing digital vs analogue cameras in that thread may do the same in a new thread)

If I recall the gist of what people were saying, they were stating that MP3s were better than CDs because 128 is higher than 44.

I believe people have got bitrate and sampling frequency mixed up...

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stampeder

· #17 · Jun 10, 2005

JohnnyG said:
Yup, that's mixed up all right! The sampling frequency of CD is 44.1KHz. That means that the audio waveform is sampled 44,100 times per second. Each sample is captured with 16 bit accuracy. Simple math will show you that the bit rate of CD is therefore approximately 705kb/s. That's the number to compare to an MP3 at 128kb/s.

When an MP3 is uncompressed, it's output once again matches the specs of CD.

Thanks for that! Does anyone know if MP3s can do multi-channel too, such as on an SACD?

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