diff options
Diffstat (limited to 'lib/tests/test_meters.py')
| -rw-r--r-- | lib/tests/test_meters.py | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/tests/test_meters.py b/lib/tests/test_meters.py index 73f3db6..b013ec9 100644 --- a/lib/tests/test_meters.py +++ b/lib/tests/test_meters.py @@ -17,6 +17,20 @@ def test_true_peak_bounds(sr): assert sp - 0.01 <= tp <= sp + 0.6 +def test_true_peak_blockwise_matches_whole_file(sr): + from scipy import signal + + rng = np.random.default_rng(3) + n = sr * 75 + x = ( + 0.5 * np.sin(2 * np.pi * 997.0 * np.arange(n) / sr) + 0.02 * rng.standard_normal(n) + ).astype(np.float32) + half = 10 * 4 + h = signal.firwin(2 * half + 1, 0.25, window=("kaiser", 8.0)).astype(np.float32) + ref = meters.sample_peak_db(signal.resample_poly(x, 4, 1, window=h)) + assert abs(meters.true_peak_db(x, sr) - ref) < 0.01 + + def test_lufs_of_sine(sr): x = sine(1000, 3.0, sr, peak_dbfs=-17.0) assert abs(meters.lufs(x, sr) + 20.05) < 0.2 @@ -32,6 +46,13 @@ def test_noise_floor_below_speech(sr): assert floor < meters.rms_db(x) - 4.0 +def test_speech_level_db_ignores_leading_silence(sr): + x = speechish(6.0, sr, level_dbfs=-20.0) + y = np.concatenate([np.zeros(sr * 4, dtype=np.float32), x]) + assert abs(meters.speech_level_db(x, sr) - meters.speech_level_db(y, sr)) < 1.0 + assert meters.speech_level_db(x, sr) > meters.rms_db(x) + + def test_all_meters_keys(sr): d = meters.all_meters(speechish(3.0, sr), sr) assert set(d) == { |