function?Analyser_3D（keytone）
%UNtitleD?Summary?of?this?function?goes?here
%???Detailed?explanation?goes?here
figure（‘Name‘‘Pe-SNR-N關系3D圖‘）;
nX_SNR=0;
nY_nGoertzel=0;
for?nGoertzel=2:10:800
????nY_nGoertzel=nY_nGoertzel+1;
	for?SNR=-10:10
????????nX_SNR=nX_SNR+1;
????????cnt=0;
????????for?n=1:10
????????????noisetone=?Noise_Adder（toneSNR）;
????????????[keyDetected?spectrumGeortzel?timeGoertzel]?=?DTMF_Goertzel_Detector（noisetonenGoertzel）;
????????????if?keyDetected==key
????????????????cnt=cnt+1;
????????????end?
????????end
????????Pe（nY_nGoertzelnX_SNR）=1-cnt/10;
????end
????nX_SNR=0;
end
[SNRnGoertzel]=meshgrid（-10:102:10:800）;
surf（SNRnGoertzelPe）;
title（‘Pe-SNR-N關系3D圖‘）;
xlabel（‘SNR‘）;
ylabel（‘N‘）;
zlabel（‘Pe‘）;
end