They minimize external noises and reverberations and have highly sensitive microphones and sound mixing equipment. The principle studies are in acoustic propagation, reverberations and ambient noise. Its comparatively shallow depth caused more intense reverberations on the surface. Reverberations of the Indochina refugee crisis continued into the 21st century. The domestic reverberations were serious inside the SDP, and undermined its coalition with the FDP. A couple's divorce has profound reverberations for their entire extended family. Bentov's invention was a seismographic device to record the heartbeat, in particular the aorta's reverberations. Both the government and the people felt the tremendous reverberations. Along with their abundant musical influence, the Sex Pistols' cultural reverberations are evident elsewhere. The reverberations of this act of independence could be felt throughout Venezuela almost immediately. Meanwhile, the political reverberations have been growing. Narrow-frequency bandwidth notes are increased in volume and length by reverberations in densely vegetated habitats. In the shooting's emotional reverberations, Hunt and Yang abruptly marry, not wanting to risk separation. The crime sent reverberations through Tombstone and Cochise County. On 30 August, he was a judge at Padma Seshadri Bala Bhavan's cultural event Reverberations.