4 ms·
Just to give one example, if you want to do forensic analysis on the signal based on inaudible differences. That's a valid use case for an archive that doesn't
by raphlinus 3y ago
Just to give one example, if you want to do forensic analysis on the signal based on inaudible differences. That's a valid use case for an archive that doesn't apply to consumer (even audiophile) consumption of music streams.
- eviks 3y agoForensic analysis to answer which question?
- raphlinus 3y agoWhat tools were used to create the audio? For example, the exact patterns of dither-based noise shaping[1] may reveal insight, but are by definition inaudible. Or perhaps there's an ultrasound source - something recorded near old-school CRT monitors may have a 15.75kHz tone, ordinarily outside the threshold of hearing but shows up as a clear peak on a spectrogram. [1]: https://www.sweetwater.com/insync/hear-effects-dithering/ https://www.sweetwater.com/insync/hear-effects-dithering/
- eviks 3y agoInteresting, thanks
- NobodyNada 3y ago> something recorded near old-school CRT monitors may have a 15.75kHz tone, ordinarily outside the threshold of hearing Only for some people -- the upper limit of human hearing varies between 15-20kHz, depending on the person and their age. For many children and younger adults (myself included), CRT coil whine is well within our audible range, as an incredibly annoying high-pitched squeal. This comes up in speedrunning communities sometimes -- many runners prefer to play on CRTs due to their fast response time, and streamers who use CRTs need to remember to set up a notch filter on their microphone, or else their stream may be borderline unwatchable for younger viewers and the streamer might not even realize it.