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Discussion Groups | Audio Signal Processing | appearance of new frequencies in the mp3 output

Technical discussions related to Audio Signal Processing (digital effects, acoustics, noise reduction, musical signal processing, etc).

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appearance of new frequencies in the mp3 output - shameedsait - Sep 8 9:45:10 2006

Hi all, I low-pass filtered a wav file so that there was no component 
above 16 kHz. But the mp3 file file I got after encoding the low-pass 
filtered wav file using lame encoder had components well above 16 kHz 
appearing intermittently. What could be the reason for this? 
(windowing??? MDCT???)

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