diff options
| author | Jon Nordby <jononor@gmail.com> | 2025-04-18 00:17:33 +0200 |
|---|---|---|
| committer | Martin Stensgård <mastensg@mastensg.net> | 2025-04-18 16:12:03 +0200 |
| commit | 61d9a812d1ab7c62b0e76903fb55a8c4d180298b (patch) | |
| tree | a96ea2d63fe9222e4569a085681f0933af470329 /tools | |
| parent | d26152cb2fdaf1381dc43eb69a3f299911b68d50 (diff) | |
tools: Simplify test signal to 1 khz sine
Comes out as a 1khz square wave...
Not quite right
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/pcm2pdm.py | 2 | ||||
| -rw-r--r-- | tools/pdm2pcm.py | 2 | ||||
| -rw-r--r-- | tools/testsignal.py | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/tools/pcm2pdm.py b/tools/pcm2pdm.py index 7cf05fb..f04f2ba 100644 --- a/tools/pcm2pdm.py +++ b/tools/pcm2pdm.py @@ -3,7 +3,7 @@ import soundfile def second_order_delta_sigma(pcm): # Normalize input XXX: remove normalization - pcm = pcm / np.max(np.abs(pcm)) + #pcm = pcm / np.max(np.abs(pcm)) n = len(pcm) pdm = np.zeros(n, dtype=np.uint8) diff --git a/tools/pdm2pcm.py b/tools/pdm2pcm.py index 6d2c284..15b86ce 100644 --- a/tools/pdm2pcm.py +++ b/tools/pdm2pcm.py @@ -40,7 +40,7 @@ def main(): # Normalize pcm_data -= 128.0 - pcm_data = 2**15 * (pcm_data / np.max(np.abs(pcm_data))) + pcm_data = 2**13 * (pcm_data / np.max(np.abs(pcm_data))) print(numpy.min(pcm_data), numpy.max(pcm_data), numpy.mean(pcm_data)) diff --git a/tools/testsignal.py b/tools/testsignal.py index 0f28e1c..fb8c599 100644 --- a/tools/testsignal.py +++ b/tools/testsignal.py @@ -31,7 +31,7 @@ if __name__ == "__main__": sample_rate = 16000 - signal = generate_test_tone(sample_rate=sample_rate) + signal = generate_test_tone(sample_rate=sample_rate, freqs=[1000.0], noise_level=0.0) sf.write(filename, signal, sample_rate) print(f"Saved test tone to '{filename}'.") |