String instrument and pickup

A string instrument comprising:

• an instrument main body;
• strings;
• a saddle that is inserted into a groove formed on the instrument main body and supports the strings;
• and
• a pickup that includes at least one piezoelectric element that has a porous layer that is stretchable and compressible in a thickness direction of the porous layer, and that is configured to output a detection signal in accordance with a stretching and compressing deformation of the porous layer,
• the at least one piezoelectric element being disposed between a first inner side surface of the groove and a first side surface of the saddle,
• a width of the groove extending from the first inner side surface of the groove to a second inner side surface of the groove that is opposite to the first inner side surface being greater than a width of the saddle in an arrangement direction in which the first inner side surface and the second inner side surface are arranged, and
• a thickness of the at least one piezoelectric element in the arrangement direction under no load being smaller than a difference between the width of the groove and the width of the saddle.

A pickup comprising:

• a first piezoelectric element that has a first porous layer that is stretchable and compressible in a thickness direction of the first porous layer, and that is configured to output a detection signal in accordance with a stretching and compressing deformation of the first porous layer,
• the first piezoelectric element being configured to be disposed between a first inner side surface of a groove formed on an instrument main body of a string instrument, and a first side surface of a saddle of the string instrument, the saddle being inserted into the groove,
• a width of the groove extending from the first inner side surface of the groove to a second inner side surface of the groove that is opposite to the first inner side surface being greater than a width of the saddle in an arrangement direction in which the first inner side surface and the second inner side surface are arranged, and
• a thickness of the first piezoelectric element in the arrangement direction under no load being greater than or equal to a difference between the width of the groove and the width of the saddle.

A pickup comprising:

• a first piezoelectric element that has a first porous layer that is stretchable and compressible in a thickness direction of the first porous layer, and that is configured to output a detection signal in accordance with a stretching and compressing deformation of the first porous layer,
• the first piezoelectric element being configured to be disposed between a first inner side surface of a groove formed on an instrument main body of a string instrument, and a first side surface of a saddle of the string instrument, the saddle being inserted into the groove,
• a width of the groove extending from the first inner side surface of the groove to a second inner side surface of the groove that is opposite to the first inner side surface being greater than a width of the saddle in an arrangement direction in which the first inner side surface and the second inner side surface are arranged, and
• a thickness of the first piezoelectric element in the arrangement direction under no load being smaller than a difference between the width of the groove and the width of the saddle.