Transducer and transducer array

A transducer array, comprising:

• a plurality of transducers that perform electro-acoustic conversion, wherein
• each of the plurality of transducers comprises a diaphragm capable of vibrating in a thickness direction, a driver that vibrates the diaphragm by electrical energy, and a first lid placed over the diaphragm,
• the first lid is formed with through-holes that allow an interior space formed between the first lid and the diaphragm to communicate with an outside, thereby radiating sound waves from the diaphragm, which is a planar sound source, to the outside as a point or line sound source,
• the sound waves from the point or line sound source are combined by forming the through-holes in plural,
• with respect to a maximum value of a volume of air pushed out or drawn in from the interior space determined based on a vibration amplitude and a vibration frequency of the diaphragm, a width and a depth of the plurality of through-holes are set so that air having a volume equal to the maximum value can pass through at the vibration frequency, and
• the plurality of transducers are arranged in a planar or linear arrangement.