This sound demands a real good speaker system with with hard attenuated loadspeakers, because the risk of overtones and strong and ugly transients. And then you'll say 'he can't make good recordings'. So, now you are warned. The sound is from a single stainless steel bell. The hammer is contineously hitting the bell harder and harder until maximum signal without distortion. I tried harder but the nice sinus curves became harsh transients instead.<br/>wanggggwangggpianotofortecrescendo.wav<br/>聲道：2<br/>類型：wav<br/>accelerating、powerful、strong、load、increase<br/>加速、強大、強大、加載、增加<br/>資料來源：freesound ( https://freesound.org )