diff options
| -rw-r--r-- | gnuradio-core/src/python/gnuradio/blks2impl/logpwrfft.py | 4 | ||||
| -rw-r--r-- | gr-wxgui/src/python/fft_window.py | 20 | ||||
| -rw-r--r-- | gr-wxgui/src/python/scopesink_gl.py | 2 |
3 files changed, 15 insertions, 11 deletions
diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/logpwrfft.py b/gnuradio-core/src/python/gnuradio/blks2impl/logpwrfft.py index cf8eb1be7..7ef40be40 100644 --- a/gnuradio-core/src/python/gnuradio/blks2impl/logpwrfft.py +++ b/gnuradio-core/src/python/gnuradio/blks2impl/logpwrfft.py @@ -55,9 +55,9 @@ class _logpwrfft_base(gr.hier_block2): c2mag = gr.complex_to_mag(fft_size) self._avg = gr.single_pole_iir_filter_ff(1.0, fft_size) self._log = gr.nlog10_ff(20, fft_size, - -10*math.log10(fft_size) # Adjust for number of bins + -20*math.log10(fft_size) # Adjust for number of bins -10*math.log10(window_power/fft_size) # Adjust for windowing loss - -20*math.log10(ref_scale/2)) # Adjust for reference scale + -20*math.log10(ref_scale/2)+3.0) # Adjust for reference scale self.connect(self, self._sd, fft, c2mag, self._avg, self._log, self) self._average = average diff --git a/gr-wxgui/src/python/fft_window.py b/gr-wxgui/src/python/fft_window.py index 0529e6a5d..4c575f1a6 100644 --- a/gr-wxgui/src/python/fft_window.py +++ b/gr-wxgui/src/python/fft_window.py @@ -256,15 +256,19 @@ class fft_window(wx.Panel, pubsub.pubsub): if not len(self.samples): return #get the peak level (max of the samples) peak_level = numpy.max(self.samples) - #get the noise floor (averge the smallest samples) - noise_floor = numpy.average(numpy.sort(self.samples)[:len(self.samples)/4]) - #padding - noise_floor -= abs(noise_floor)*.5 - peak_level += abs(peak_level)*.1 - #set the reference level to a multiple of y divs - self[REF_LEVEL_KEY] = self[Y_DIVS_KEY]*math.ceil(peak_level/self[Y_DIVS_KEY]) + #separate noise samples + noise_samps = numpy.sort(self.samples)[:len(self.samples)/2] + #get the noise floor + noise_floor = numpy.average(noise_samps) + #get the noise deviation + noise_dev = numpy.std(noise_samps) + #determine the maximum and minimum levels + max_level = peak_level + min_level = noise_floor - abs(2*noise_dev) #set the range to a clean number of the dynamic range - self[Y_PER_DIV_KEY] = common.get_clean_num((peak_level - noise_floor)/self[Y_DIVS_KEY]) + self[Y_PER_DIV_KEY] = common.get_clean_num(1+(max_level - min_level)/self[Y_DIVS_KEY]) + #set the reference level to a multiple of y per div + self[REF_LEVEL_KEY] = self[Y_PER_DIV_KEY]*round(.5+max_level/self[Y_PER_DIV_KEY]) def _reset_peak_vals(self, *args): self.peak_vals = EMPTY_TRACE diff --git a/gr-wxgui/src/python/scopesink_gl.py b/gr-wxgui/src/python/scopesink_gl.py index b4ae0f339..a5e3ca3ce 100644 --- a/gr-wxgui/src/python/scopesink_gl.py +++ b/gr-wxgui/src/python/scopesink_gl.py @@ -50,7 +50,7 @@ class ac_couple_block(gr.hier_block2): self.connect(self, lpf, mute, (sub, 1)) #subscribe controller.subscribe(ac_couple_key, lambda x: mute.set_mute(not x)) - controller.subscribe(sample_rate_key, lambda x: lpf.set_taps(2.0/x)) + controller.subscribe(sample_rate_key, lambda x: lpf.set_taps(0.05)) #initialize controller[ac_couple_key] = ac_couple controller[sample_rate_key] = controller[sample_rate_key] |