70 lines
1.4 KiB
Python
Executable File
70 lines
1.4 KiB
Python
Executable File
import numpy as np
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from cmsisdsp.sdf.scheduler import *
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FS=16000
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# You can try with 120
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AUDIO_INTERRUPT_LENGTH = 192
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WINSIZE=256
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floatType=CType(F32)
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### Define nodes
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src=FileSource("src",AUDIO_INTERRUPT_LENGTH)
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src.addLiteralArg("input_example3.txt")
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sliding=SlidingBuffer("audioWin",floatType,256,128)
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overlap=OverlapAdd("audioOverlap",floatType,256,128)
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window=Dsp("mult",floatType,WINSIZE)
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toCmplx=ToComplex("toCmplx",floatType,WINSIZE)
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toReal=ToReal("toReal",floatType,WINSIZE)
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fft=CFFT("cfft",floatType,WINSIZE)
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ifft=ICFFT("icfft",floatType,WINSIZE)
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hann=Constant("HANN")
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sink=FileSink("sink",AUDIO_INTERRUPT_LENGTH)
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sink.addLiteralArg("output_example3.txt")
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g = Graph()
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g.connect(src.o, sliding.i)
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# Windowing
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g.connect(sliding.o, window.ia)
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g.connect(hann,window.ib)
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# FFT
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g.connect(window.o,toCmplx.i)
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g.connect(toCmplx.o,fft.i)
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g.connect(fft.o,ifft.i)
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g.connect(ifft.o,toReal.i)
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# Overlap add
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g.connect(toReal.o,overlap.i)
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g.connect(overlap.o,sink.i)
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print("Generate graphviz and code")
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conf=Configuration()
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conf.debugLimit=40
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#conf.memoryOptimization=True
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#print(g.nullVector())
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sched = g.computeSchedule(conf)
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#print(sched.schedule)
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print("Schedule length = %d" % sched.scheduleLength)
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print("Memory usage %d bytes" % sched.memory)
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#
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#conf.dumpFIFO=True
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#conf.codeArray=True
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sched.ccode("generated",config=conf)
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with open("test.dot","w") as f:
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sched.graphviz(f)
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