hi thx, exactly the explanation i wanted to hear!
i want to try to damage some flac files to hear the effects on the audio, but does anybody knows if there is a program (like hex editor, ...) that could be used to visually 'search' the different blocks in the file, assuming this is even possible. if it's not, what would be a good way to damage the file in some places to be able to hear the effect on the audio? I was also wondering if there is a chance the flac decoder outputs a wrong sample containing wrong sound rather then outputting a silent sample or no sample at all. Or is this not possible ? thx in advance 2007/10/25, Brian Willoughby <[EMAIL PROTECTED]>: > If there are tens of thousands of silent samples, due to errors, then > you might hear silence. However, it's more likely to be short enough > to sound like a glitch. In fact, fewer erroneous samples will sound > more like loud distortion than silence, depending upon the difference > between the missing sample and zero. This is all assuming individual > samples. > > What's more likely is that a given error will destroy everything from > the current sample to the end of the block. That's mostly why the > documentation mentions silent sections. If you have a bad FLAC file > and use -F, you'll probably end up with silent blocks. The default > block size for a FLAC file is very similar to the block size of a CD, > so glitches might sound roughly the same. One difference is that > many CD players have digital filters which chirp when there is bad > data, while a FLAC will not have this same sound effect when errors > are detected. > > Brian W. > > > On Oct 24, 2007, at 07:57, Harry Sack wrote: > - the decoded sample is error-free and is added to the WAV file > - the decoded sample has an error but instead this sample is not > added to the WAV file (so it's just thrown away) > - the decoded sample has an error but instead a silent sample is > added to the WAV file (so you can hear in fact silence when there are > a lot of samples of this kind directly after each other) > > is this above correct or are there more situations that can occur in > the case of corrupted flac files you want to decode using -F? > > > _______________________________________________ Flac mailing list Flac@xiph.org http://lists.xiph.org/mailman/listinfo/flac
