naredil prikaz z FuncAnimate
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d6e39e0301
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@ -11,6 +11,7 @@ avg=128 #Število povprečenj spektra
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import sounddevice as sd #Poiskati na spletu in naložiti s pip3!
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import numpy as np #Uporaba učinkovitih funkcij numpy
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import matplotlib.pyplot as plt #Risanje rezultata z matplotlib
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import matplotlib.animation as animation
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sd.default.device = 0
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fskala=np.linspace(0,fs/2,2*pts+1)[:-1] #Izračunaj frekvenčno skalo [Hz]
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@ -25,7 +26,6 @@ odziv = np.loadtxt("5mhz-polinom-2048tock.csv", delimiter=',')
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a = odziv[:,1]
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popravek = np.max(a[4:-1])-a[4:-1]
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f=fskala[4:-1]
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def spekter(fs,pts,avg,fskala): #Zajem signala z zvočno kartico in povprečenje spektra [dB]
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s=sd.rec(pts*(1+avg),samplerate=fs,channels=1) #Vzorčenje ADC zvočne kartice, 2D polje!
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@ -40,19 +40,27 @@ def spekter(fs,pts,avg,fskala): #Zajem signala z zvočno kartico in povprečenje
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s2=s2+np.square(np.abs(np.fft.rfft(o*s.reshape(-1)[k:k+2*pts],n=4*pts)[:-1]))
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k+=pts
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s=10*np.log10(nz+0.5*s2/pts/pts/avg) #Povprečje [dB]
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print(' Max:',"%.1f"%(np.amax(s)),'dB @',"%.1f"%(fskala[np.argmax(s)]),'Hz')
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#print(' Max:',"%.1f"%(np.amax(s)),'dB @',"%.1f"%(fskala[np.argmax(s)]),'Hz')
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return s[4:-1]+popravek
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wfbp=None
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while wfbp!=True: #Prvo risanje spektra z normalizacijo, ponovi s klikom miške
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wfbp=plt.waitforbuttonpress(0.01)
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while wfbp==None: #Zanka risanja spektra, izhod=pritisk tipke ali miške
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s = spekter(fs,pts,avg,fskala)
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Pcal = np.amax(s)
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K = Pcal - 3 - dSB
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fsum = s - K - 3 - 6 - 20*np.log10(np.sin(fskala[4:-1])*np.pi*tau)
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plt.plot(f, s, f, fsum)
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fig.canvas.draw()
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wfbp=plt.waitforbuttonpress(0.01)
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plt.close()
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### izris z animacijo
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f=fskala[4:-1]
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initsum = spekter(fs,pts,avg,fskala)
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fig,ax = plt.subplots()
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raw,pn, = ax.plot(f,initsum,f,initsum)
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ax.set_xlim(0, 100000)
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ax.set_ylim(-130,-30)
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ax.grid(True)
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def meritev():
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s = spekter(fs,pts,avg,fskala)
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Pcal = np.amax(s)
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K = Pcal - 3 - dSB
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fsum = s - K - 3 - 6 - 20*np.log10(np.sin(f*np.pi*tau))
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raw.set_data(f,s)
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pn.set_data(f,fsum)
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ax.figure.canvas.draw()
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return raw,pn
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ani = animation.FuncAnimation(fig,meritev,interval=50)
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print('*** Konec ***') #pritisk tipke na tipkovnici
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