|
ȸ ֺ Ӹ ƴ϶ , б, Ʈ ֹε ϸ Ȱ ϱ ̴. ȸ ̾ ¿ ϴ α ֹε Ǫ ϴ ᱹ ο ߱ ִ. ǻ ǥ 䱸 ϴ ȸ Դ νĵ ְ ȸ ε鵵 ΰٿ Ȱ Ǹ ֱ ̴.
ȸѹ14 ȸ ڴ Ȯ Ͽ Ÿο ɰ ظ ִ ν ɷ ϴ ϴ Ѽ Ǹ, ʰϴ Ÿο ظ ִ 쿡 Ǵ Ȯ ϰų, Ȯ Ͻú ʿ ġ ִٰ Ǿ ִ. ȸ ɿ 7 ְбպ α ȸ 60DB(ú) 55DB ȭƴٴ ˾ƾ ̴. ȿ ְ ص ԵǾ ִµ ټ Ǿ ִ ְ Ѵ. ְ ؿ ð ҿ 75~95DB ϰ ȸ 1ð ̳ 3 ̻ ʰϸ Ǵ Ȯ ߵϰ ȴ.
dB(ú) ǥõǴµ Ϲε ϻ ȭ 60dB , ö̳ ò 8090dB 85dB ѰԵǸ 谨 ϰ 130dB ̻ Ǹ Ϳ ϰ ɰϸ ִٰ Ѵ. åӿ ȸ ϴ ȸ з ȯϿ ع ȸ ϴ ȸ 忡 ϴ ʰϴ ؼ Ȯ ̳ ûϿ ֹΰ ȸ ϰ ּȭϱ ϰ ִ.
ȸ ߿ Ṉ̀ ڽ Ǵ ü ̳ 䱸 Ƿ Ȯ ȸ ֹεκ ȣ ϴ ۿ뵵 ִ ŭ ȸ ȭ ϴ ڼ ʿϴ.
ڼȭ hoahn01@hanmail.net