3 ms·
Thinking about a simpler system... how about getting a camera on a turntable recording a video while the record turns. It would then be possible to track a line
by marcodiego 6y ago
Thinking about a simpler system... how about getting a camera on a turntable recording a video while the record turns. It would then be possible to track a line with an specified width in the video and turn the changes in a piece of this line it into a waveform.
- verelo 6y agoThis would be a cool project
- porterde 6y agoAlso capture the audio sample from the same record alongside the video. Repeat with lots of records. Train a model to predict the audio from the video. Voila! Play records with just the camera “stylus”...
- 3dee 6y agoI once thought about building this, but it's much harder than you think. The data has to be processed very quickly. I believe you should think in terms of 0.3m groove per second. If you put a camera above the groove you also need something like a stepper motor to control the arm. But I believe the biggest problem is dust. A needle will move small particles out of the way, but a camera does not. This is also why laser turntables need 'clipping' filters. Dust will create all kinds of noise you don't want to hear.
- IndySun 6y ago>The data has to be processed very quickly. How about designing an arm that used more than one laser 'needle'?