Submitted on: 05 April 2018.
Revised on: 06 June 2018.
Accepted on: 23 July 2018.
___________________Acoustics---MDPI
Submitted on: 09 January 2014.
Revised on: 02 March 2014.
Accepted on: 26 April 2014.
___________________Acoustics---MDPI
Submitted on: 24 August 2020.
Revised on: 22 September 2020.
Accepted on: 02 November 2020.
___________________Acoustics---MDPI
http://reply.papertrans.cn/1/2/178/178-34.png
Submitted on: 01 October 2000.
Revised on: 18 January 2001.
Accepted on: 06 February 2001.
___________________Acoustics---MDPI
http://reply.papertrans.cn/1/2/178/178-36.png