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TOPIC: Audio support for PyRadmon
Audio support for PyRadmon 2 years 11 months ago #151
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This topic will handle the addition of audio within PyRadmon.
Project moved to SourceForge! SourceForge project page: PyRadmon Reborn I will be using either PyAudio for this script. Installation: 1> Use your package manager to install PortAudio. (http://www.portaudio.com/) 2> Install PyAudio (http://people.csail.mit.edu/hubert/pyaudio) 3> Run PyRadmon.py once (python ./pyradmon.py) 4> Configure all the settings in config.txt 5> Run PyRadmon.py again and monitor.  (python ./pyradmon.py)Download: Single counter: Two counters: Other: Fully functional now, a great shout-out to Dan for initial help and hints. Thanks to PyAudio, Python and Russell Borogove @ Stack Overflow for the library's and good passive help. |
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Audio support for PyRadmon 2 years 11 months ago #152
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Audio support for PyRadmon 2 years 11 months ago #153
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Audio support for PyRadmon 2 years 11 months ago #154
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Audio support for PyRadmon 2 years 11 months ago #155
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Audio support for PyRadmon 2 years 11 months ago #156
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So, basically I need a helping hand on this total confusion of a logic....
(No idea who made it up but it got me and a math freak brain-fart.  )Problem section: ...
self.amplitudebuffer=None
self.envelope = float(0)
self.detectwidthcounter = 0
self.lastrisingedge = float(0)
self.lastfallingedge = float(0)
self.lastdeadtimeedge = float(0)
self.lastminwidthedge = float(0)
self.last = False
self.onecaptured = False
self.deadticker = 1
cpm=25
stream = self.p.open(format=self.FORMAT, channels=self.CHANNELS, rate=self.RATE, input=True, frames_per_buffer=self.CHUNK)
frames = []
for i in range(0, int(self.RATE / self.CHUNK * self.RECORD_SECONDS)):
dataAudio = stream.read(self.CHUNK)
frames.append(dataAudio)
try:
bytesrecorded = self.CHUNK * self.RECORD_SECONDS
sampletime = float(float(1.0) / float(self.RATE))
detectlevel = float(0.025)
minwidth = int(math.fsum((float(5) / float(1000)) / sampletime))
deadtime = int(math.fsum((float(5) / float(1000)) / sampletime))
radcount = 0
self.lastrisingedge = -1
self.lastfallingedge = -1
self.lastdeadtimeedge = -1
self.lastminwidthedge = -1
arrayptr = 0
value = 0.0
attack = 0.001
release = 0.004
ga = math.exp(-1 / (self.RATE * attack))
gr = math.exp(-1 / (self.RATE * release))
self.onecaptured = False
svalue=0
for n in range(0, bytesrecorded):
# get your data into 'input'
svalue = (frames[n + 1] < 8) or frames[n] # Used to be svalue = (short)((e.Buffer[n + 1] << 8) | e.Buffer[n]);
if svalue == (-32768):
svalue = (-32767)
if svalue > 0:
value = math.fabs(svalue) / float(32767)
if svalue < 0:
value = math.fabs(svalue) / float(32768)
if self.envelope < value:
self.envelope *= ga
self.envelope += (1.0 - ga) * value
else:
self.envelope *= gr
self.envelope += (1.0 - gr) * value
self.amplitudebuffer[arrayptr] = math.floor(self.envelope)
if self.amplitudebuffer[arrayptr] >= detectlevel:
if self.detectwidthcounter == 0:
self.lastrisingedge = arrayptr * sampletime
self.detectwidthcounter = self.detectwidthcounter + 1
if self.detectwidthcounter >= minwidth:
radcount = radcount + 1
self.onecaptured = True
self.lastminwidthedge = arrayptr * sampletime
self.last = True
else:
if self.last==True:
self.lastfallingedge = arrayptr * sampletime
self.deadticker = deadtime
self.detectwidthcounter = 0
self.deadticker = self.deadticker - 1
self.last = False
if self.deadticker == 0:
self.lastdeadtimeedge = arrayptr * sampletime
arrayptr = arrayptr + 1
n = n + 2
cpm = radcount
except Exception as ex:
print "Problem with audio port => geiger 1:\r\n\t", str(ex),"\r\nExiting\r\n"
stream.stop_stream()
stream.close()
self.p.terminate()
self.stop()
sys.exit(1)
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