![]() The spectral view of both test files, AUDIO.flac and MOVIE.flac, look rather noisy in the audio area of about -60 dB and smaller, this may be also the effect of upsampling to 48 kHz.Īlso the spectral view looks like as the audio has been modified by some audio software, maybe in order to enhance the psycho-acoustic feeling of wide and bombastic rooms and sounds. ![]() The spectral view of the GAME.flac test file looks like a maximal 18 kHz sound file with a visible noisy transition band around 17 kHz, so it could also have been an original 16 kHz bandwith audio file.īecause of the upsampling to 48 kHz there has been added additional noise up to 24 kHz with level of about -60 dB and smaller (for most disco people a never hearable area). I would like to hear opinions from people who maybe know something about spectrum analyzing. But this screenshot bares the proof of doing the other way around- showing low quality sounds as lossless: Spectrogram is suppose to show fake lossless audio files. But I know for sure that this rip was not done by me, so almost for sure it was downloaded it a FLAC format and the encoded to WAV and back to FLAC Īnd the question here is: how is it possible for this file to have frequencies around 24 kHz and at the same time to sound like something with 10 kHz ? ![]() I do not remember the origins of it, but I have it described as being a ripped audio from a Nintendo 64 videogame. The MOVIE files looks a little different in the spectrogram but having audio over the 20 kHz line it sounds more like around 15 kHz. But what is important is that it sounds badĪnd here is the mystery: both files show frequencies above 20 kHz but only the AUDIO sound like it. Unfortunately I do not remember what kind of file it was thus I do not know the quality of audio in that video. And it sound greatįile MOVIE was extracted from a video by me into WAV and then encoded to FLAC. And some strange things I've noticedįor example here is music from the same movie, both in FLAC formatįile AUDIO was downloaded in FLAC, encoded by me into WAV and then encoded back to FLAC. I've been looking recently on some files with the usage of spectrogram in Audacity.
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