[Egor Sanin] >Now the question is whether it is possible to analyze an >audio file encoded in a lossless format and >determine if it existed as a lossy file in a >previous life? The lowpass/antialiasing filters used for most audio productions usually operate very close to the Nyquist limit. Those employed in lossy audio data compression often (but not always) are set to a lower cutoff frequency. On a spectrogram, their effect is visible as a total absence of energy above, say, 20kHz or lower. Cheers, Tim _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
