#!ruby

include Math
sr = 48000    # サンプルレート
fr = 0.7145   # 周波数
dt = 1.0/sr
t  = 0
open("sin_48000_100s.dat","w"){|f| 
f.puts "; Sample Rate #{sr}\n; Channels 1"
while t < 100 do
	f.puts "#{t}\t#{ sin(2*PI*fr*t) }"
	t += dt
end
}