#!ruby

include Math
sr = 48000    # サンプルレート
fr = 1000   # 周波数
amp = 0.1
dt = 1.0/sr
t  = 0
open("sin＿1000Hz_a0.1_r48000_500s.dat","w"){|f| 
f.puts "; Sample Rate #{sr}\n; Channels 1"
while t < 500 do
	f.puts "#{t}\t#{ amp*sin(2*PI*fr*t) }"
	t += dt
end
}