Vibration plate and musical instrument

A vibration plate for a musical instrument, the vibration plate comprising:

• a plate-shaped vibration plate main body;
• a first elongated reinforcing member disposed on a first face of the vibration plate main body, and that projects outwardly from the first face and extends along the first face in a direction that prevents the vibration plate main body from deforming;
• and
• a second elongated reinforcing member disposed on a second face of the vibration plate main body, and that projects outwardly from the second face and extends along the second face in the direction that prevents the vibration plate main body from deforming,
• wherein the first elongated reinforcing member and the second elongated reinforcing member are laterally spaced apart as viewed from a thickness direction of the vibration plate main body, and
• wherein the lateral spacing between the first elongated reinforcing member and the second elongated reinforcing member is equal to or less than three times a maximum dimension of a cross section of the first elongated reinforcing member, the cross section being orthogonal to a lengthwise direction of the first elongated reinforcing member.

A musical instrument comprising:

• a vibration plate comprising:
• a plate-shaped vibration plate main body;
• a first elongated reinforcing member disposed on a first face of the vibration plate main body, and that projects outwardly from the first face and extends along the first face in a direction that prevents the vibration plate main body from deforming;
• and
• a second elongated reinforcing member disposed on a second face of the vibration plate main body, and that projects outwardly from the second face and extends along the second face in the direction that prevents the vibration plate main body from deforming;
• and
• a vibrator configured to vibrate the vibration plate main body.