3 ms·
Yep. Every tiny dust particle makes an audible pop, while an actual stylus would've just pushed it out of the groove.
by iforgotpassword 4y ago
Yep. Every tiny dust particle makes an audible pop, while an actual stylus would've just pushed it out of the groove.
- interestica 4y agoSo laser turntable needs a leading 'dust plow' ?
- morcheeba 4y agoThat sounds good! Two other solutions: - low pass filter. Assuming the dust is small compared to the expected movement in the groove, you can filter it out electornically. - dust detector. Nikon had a cool 35mm scanner... instead of RGB, it had an additional IR layer at an angle just to detect dust. So, automated dust removal tools knew if a black spot in an image was supposed to be there, or if it was actually dust. Here, extra optics would know if the laser was reading dust and could mute/filter the sound during that time.
- interestica 4y agoInteresting ideas! The 'dust detector' is 'Digtal ICE' that you'll sometimes see labeled on scanners. (https://en.wikipedia.org/wiki/Digital_ICE https://en.wikipedia.org/wiki/Digital_ICE)
- pizza 4y agoSomeone should try doing a dsp+ml hybrid filter that takes both the optical signal and the generated audio into account to filter out the crackling