espeak 실행
echo "Rudolph, the red-nosed reindeer, had a very shiny nose." | espeak apt install sox play -n synth 0.1 sine 880 vol 0.5 sox 키타코드 play -n synth pl G2 pl B2 pl D3 pl G3 pl D4 pl G4 \ delay 0 .05 .1 .15 .2 .25 remix - fade 0 4 .1 norm -1