1. The Radio Use Web Site. .
2. Sentence intelligibility of reinforced speech under echoic and disturbing noise conditions;Toida;Trans Archi Inst Jpn,1984
3. Speech intelligibility in open air sound fields;Toida;J Acoust Soc Jpn,1987
4. Characteristics and prediction of speech intelligibility in reinforced sound fields disturbed by echoes with a long delay time;Toida;J Archi Plan Env Eng,1997
5. The effect of long-path echo on intelligibility of the disaster radio system;Sato;Proc Spring Meeting Acoust Soc Jpn,2013