pdm: Try switch to 2 stage CIC

Still seeing odd spikes on output

1 files changed, 6 insertions, 6 deletions

diff --git a/bindings/test_galearn_pdm.py b/bindings/test_galearn_pdm.py
index 5256a46..3a19762 100644
--- a/bindings/test_galearn_pdm.py
+++ b/bindings/test_galearn_pdm.py
@@ -76,8 +76,8 @@ def test_sine_simple(frequency):
     out = numpy.zeros(shape=len(pdm_input)//DECIMATION, dtype=numpy.int16)
 
     # Process using filter
-    n_samples = galearn_pdm.process(pdm_input, out)
-    out = out / 1024 # XXX: where does this magical come from?
+    n_samples = galearn_pdm.process(pdm_input, out, 255, 1)
+    out = out / (2**15)
 
     # Compensate for delay through filter
     delay = find_forward_shift(pcm_input, out)
@@ -126,19 +126,19 @@ def test_dc():
     function = sys._getframe().f_code.co_name # looks up function name
     test_name = f'{function}' 
     sr = SAMPLERATE_DEFAULT
-    test_duration = 0.10
+    test_duration = 0.0013
 
     # Generate test data
     frequency = 1000
     pcm_input = generate_test_tone(duration_sec=test_duration,
         freqs=[frequency], noise_level=0.0, sample_rate=sr, amplitude=0.01,
-    ) + 0.20 # DC
+    ) + 0.10 # DC
     pdm_input = convert(pcm_input)
     out = numpy.zeros(shape=len(pdm_input)//DECIMATION, dtype=numpy.int16)
 
     # Process using filter
-    n_samples = galearn_pdm.process(pdm_input, out)
-    out = out / 1024 # XXX: where does this magical come from?
+    n_samples = galearn_pdm.process(pdm_input, out, 200, 1)
+    out = out / (2**15) # XXX: where does this magical come from?
 
     # Compensate for delay through filter
     delay = find_forward_shift(pcm_input, out)