def make_sweep(self, pre=None, span=0.5, post=0.1, magnitude=1e-2, start=20, stop=10000):
smpl = lambda tm: int(round(tm*self.FS))
if pre is None:
pre = span/2
s, d = dk_lib.genlogsweep(
start, stop, self.FS, smpl(pre), smpl(span), smpl(post))
s *= magnitude
n = dk_lib.pow2roundup(len(s))
#d /= np.mean(abs(np.fft.fft(dk_lib.fft_convolve(d, s), n))[n*start/self.FS:n*stop/self.FS])
#return s, d
return s
def make_sweep(self,
pre=None,
span=0.5,
post=0.1,
magnitude=1e-2,
start=20,
stop=10000):
smpl = lambda tm: int(round(tm * self.FS))
if pre is None:
pre = span / 2
s, d = dk_lib.genlogsweep(start, stop, self.FS, smpl(pre), smpl(span),
smpl(post))
s *= magnitude
n = dk_lib.pow2roundup(len(s))
#d /= np.mean(abs(np.fft.fft(dk_lib.fft_convolve(d, s), n))[n*start/self.FS:n*stop/self.FS])
#return s, d
return s
def _sweep(self, t, start, stop, pre, post, fs):
self.generate_spectrum = True
self.generate_harmonics = True
self.make_spectrum = self._sweep_make_spectrum
self.make_harmonics_responses = self._sweep_harmonics_responses
post = int(round(post * fs))
if pre < 0:
pre = int(round((len(t) - post) * 0.1))
if pre < 0:
pre = 0
else:
pre = int(round(pre * fs))
if post >= len(t) - pre:
post = int((len(t) - pre) * 0.1)
span = len(t) - (pre + post)
self.pre = pre
self.post = post
self.fs = fs
sig, self.sweep_inverse_signal, self.start, self.stop, self.sweep_rate = \
dk_lib.genlogsweep(start, stop, fs, pre, span, post)
return sig
def _sweep(self, t, start, stop, pre, post, fs):
self.generate_spectrum = True
self.generate_harmonics = True
self.make_spectrum = self._sweep_make_spectrum
self.make_harmonics_responses = self._sweep_harmonics_responses
post = int(round(post * fs))
if pre < 0:
pre = int(round((len(t) - post) * 0.1))
if pre < 0:
pre = 0
else:
pre = int(round(pre * fs))
if post >= len(t) - pre:
post = int((len(t) - pre) * 0.1)
span = len(t) - (pre + post)
self.pre = pre
self.post = post
self.fs = fs
sig, self.sweep_inverse_signal, self.start, self.stop, self.sweep_rate = dk_lib.genlogsweep(
start, stop, fs, pre, span, post
)
return sig
