The discussion focuses on the physics of record players, specifically the vibrations and resonances involved in audio playback. Key concepts include the mechanics of the needle and phono cartridge, which convert mechanical vibrations into electrical signals. Participants suggest researching Fourier analysis for waveform decomposition and the mass-spring-damper system for understanding mechanical dynamics. Notable manufacturers like Ortofon, Shure, and Grado are recommended for technical information on phono cartridges.
PREREQUISITESStudents in physics or engineering, audio engineers, and anyone interested in the mechanics of audio playback systems will benefit from this discussion.
I've found that the needle moves along the ridges which causes it to move up and down and move a magnet attached to the cantilever to vibrate between 2 coils to convert the mechincal energy to electrical energyberkeman said:Welcome to PF.
What have you found in your research so far? What would be some of the sources of vibrations, and what-all could contribute to resonances? What would different vibrational modes do in terms of distorting the audio pickup/playback signal?
berkeman said:What have you found in your research so far? What would be some of the sources of vibrations, and what-all could contribute to resonances? What would different vibrational modes do in terms of distorting the audio pickup/playback signal?
berkeman said:And what are the most common vibration noise sources in such a mechanical system?
Since Dynamics and Vibration, you should look up mass-spring-damper system, and mechanical-electrical transducers.OutdoorInnovator said:I have a project for my Dynamics and Vibrations class