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elandres
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As a hobby, I have been researching the different aspects of modeling the sounds produced by musical instruments. Particularly, I want to create as accurate a model as possible, and not something very simple (to which many may ask "why?" if complexity will reduce the likeliness of real time implementation, in which case a sampled recording might be preferable anyways -- again its a hobby).
That said, in my review of mechanical and sound waves, I've not found the link between waves in solids (vibrations) and the resulting sound waves propagated by them. Searching online has been difficult, as I am not sure what to search for; I've tried "coupling between solids and gases," "transition of sound between mediums," etc. My instinct tells me that my answer lies in somewhere in between the disciplines of rigid body and fluid mechanics, neither of which I am that strong in.
As a particular example, an acoustic guitar involves a plucked string that produces an initial sound, which is then resonated by an enclosed volume. The string vibration can be modeled as a transverse wave. Yet somehow it excites the air around it to produce the longitudinal sound waves, which are directed in all directions outward and perpendicular to the length of the string (something tells me that this is only partly true as the distortion of the string is assumed to be in one direction). A little more than half of the waves would propagate away from the guitar, without the resonating effects. Another portion would reflect off the guitar itself and then away from the guitar. And the remaining waves will travel into resonating cavity of the guitar, and then propagate outwards. In summation the resulting sound, would be the combination of those waves.
That said, in my review of mechanical and sound waves, I've not found the link between waves in solids (vibrations) and the resulting sound waves propagated by them. Searching online has been difficult, as I am not sure what to search for; I've tried "coupling between solids and gases," "transition of sound between mediums," etc. My instinct tells me that my answer lies in somewhere in between the disciplines of rigid body and fluid mechanics, neither of which I am that strong in.
As a particular example, an acoustic guitar involves a plucked string that produces an initial sound, which is then resonated by an enclosed volume. The string vibration can be modeled as a transverse wave. Yet somehow it excites the air around it to produce the longitudinal sound waves, which are directed in all directions outward and perpendicular to the length of the string (something tells me that this is only partly true as the distortion of the string is assumed to be in one direction). A little more than half of the waves would propagate away from the guitar, without the resonating effects. Another portion would reflect off the guitar itself and then away from the guitar. And the remaining waves will travel into resonating cavity of the guitar, and then propagate outwards. In summation the resulting sound, would be the combination of those waves.