Everything vibrates. Especially playing music. Even when it seems there are no moving parts, the signal itself is a dynamic electromagnetic field and we all know magnetic fields push and pull. So its all vibrating.
>>>>Several points. The signal is not an electromagnetic field, it’s an electromagnetic wave. The magnetic field induced by the current traveling in the wire is not pulling or pushing the signal - it’s orthogonal to the signal, I.e., right hand rule. 👎 Also, the signal itself in wire is not vibrating. It’s an alternating current and voltage - they alternate at the instantaneous frequency of the signal. But there is only one current/voltage traveling in a wire at one time. The signal in wire is, however, subject to external vibration.
>>>>Several points. The signal is not an electromagnetic field, it’s an electromagnetic wave. The magnetic field induced by the current traveling in the wire is not pulling or pushing the signal - it’s orthogonal to the signal, I.e., right hand rule. 👎 Also, the signal itself in wire is not vibrating. It’s an alternating current and voltage - they alternate at the instantaneous frequency of the signal. But there is only one current/voltage traveling in a wire at one time. The signal in wire is, however, subject to external vibration.