1. ํœด๋Œ€ํฐ์ถฉ์ „๊ธฐ๋กœ๋„ ์ถฉ์ „ ๊ฐ€๋Šฅํ•œ๊ฐ€์š”?


2. ์ถฉ์ „ ์–ผ๋งˆ๋งŒ์— ํ•ด์ค˜์•ผํ•˜๋‚˜์š”? 1000hz๋กœ ์“ธ ์˜ˆ์ •