Acoustic energy measurement equipment as well as acoustic performance evaluation apparatus and acoustic information measuring apparatus using the same

摘要

By considering also the particle velocity as well as sound pressure, even in the closed space standing waves can occur, and provides a measurable sound energy measuring device the acoustic energy is not affected by the standing wave. Acoustic energy measuring device for measuring the acoustic energy is composed of acoustic energy calculation section 4 Metropolitan and particle velocity calculation section 3 and section 2 sound pressure and sound reception section 1. Sound receiving unit 1 is configured to perform the sound-electrical conversion. 2 unit is sound pressure, is for calculating the sound pressure by using the output from the sound receiving unit 1. Particle velocity calculation unit 3 is for calculating the particle velocity using the output from the sound receiving unit 1. The acoustic energy calculation unit 4, is for calculating the acoustic energy using the output from the particle velocity calculation section 3 and section 2 sound pressure.