def startup(args):
global outfile
global on, off, dp
global start, stop
global processor
from functools import partial
from onyx.audio.liveaudio import inputs, default_input, LiveAudioSource
from onyx.signalprocessing.htkmfcc import make_fft_abs_processor
from onyx.util.debugprint import DebugPrint, dcheck, dprint
#from onyx.util.streamprocess import ChainProcessor
if '-o' in args:
outfile = open(args[args.index('-o')+1], 'wb', 0)
else:
outfile = sys.stdout
if '-l' in args:
logfile = open(args[args.index('-l')+1], 'wb', 0)
else:
logfile = sys.stdout
## if '-m' in args:
## mic_name = args[args.index('-m')+1]
## else:
## mic_name = 'blue'
debug = DebugPrint(logfile, 'saddemo')
## on = doer(debug.on)
## off = doer(debug.off)
dp = partial(dprint, 'saddemo', DebugPrint.NO_PREFIX, ' ')
plot_points = 255
line = [' '] * plot_points
## # select a live input
## mic_id = default_input()
## for id, chan, name, manu in inputs():
## if name.lower().find(mic_name.lower()) != -1:
## mic_id = id
## break
## mic = LiveAudioSource(mic_id, verbose=False)
## start = doer(mic.start)
## stop = doer(mic.stop)
return
# use the module's mic
mic = audio.mic
# XXX LiveAudioSource (and thus audiomodule.cpp) need to be able to provide
# the sample frequency....
sample_nsec = 22676 # 44100 Hz
#frame_nsec = 10000000 # 10 msec
#window_nsec = 25600000 # 25.6 msec
frame_nsec = 8000000 # 8 msec
window_nsec = 24000000 # 24 msec
dither = 1 / (1 << 10)
preemcoef = 0.96875
samples_per_sec, fft_size, fftmag = make_fft_abs_processor(sample_nsec, frame_nsec, window_nsec,
dither=dither, preemcoef=preemcoef,
zmeansource=True, usehamming=True,
max_channels=2)
print 'samples_per_sec', samples_per_sec, ' fft_size', fft_size
# figure out range of fft bins to work with
lowfreq = 300
highfreq = 4000
import math
low_index = int(math.ceil(lowfreq * fft_size / samples_per_sec))
high_index = int(math.floor(highfreq * fft_size / samples_per_sec))
# the bin selector
select = slice(low_index, high_index)
def display(data):
band = data[select]
band *= band
sum = float(band.sum())
dB = int(dB_scale * (10 * math.log10(sum) + dB_offset))
dp('%11.6f ' % sum, '%3d' % dB)
dB = max(1, dB)
#outfile.write('\n' + ' ' * dB + '|')
outfile.write( pen * dB + 'O' + '\n')
mic.set_sendee(fftmag.process)
fftmag.set_sendee(display)
audio = audio()
# default input
audio.mic = None
# XXX LiveAudioSource (and thus audiomodule.cpp) need to be able to provide
# the sample frequency....
sample_nsec = 22676 # 44100 Hz
#frame_nsec = 10000000 # 10 msec
#window_nsec = 25600000 # 25.6 msec
frame_nsec = 8000000 # 8 msec
window_nsec = 24000000 # 24 msec
dither = 1 / (1 << 10)
preemcoef = 0.96875
samples_per_sec, fft_size, fftmag = make_fft_abs_processor(sample_nsec, frame_nsec, window_nsec,
dither=dither, preemcoef=preemcoef,
zmeansource=True, usehamming=True,
max_channels=2)
class DpToggle(object):
"""
An object with two attributes, on and off, that toggle debug printing
of the DebugPrint object created from the constructor args.
"""
# XXX DebugPrint needs work to develop semantics to support multiple
# instances of DpToggle....
def __init__(self, *args):
self.dp_control = DebugPrint(*args)
self._on = False
def __del__(self):
self.off
@property
