Apple-2-SW/ii-vision
1
0
Fork 0
mirror of https://github.com/KrisKennaway/ii-vision.git synced 2024-12-21 20:29:21 +00:00
Code Issues Projects Releases Wiki Activity

Normalize audio at 0.5/99.5%iles to clip less

Browse Source
This commit is contained in:
kris 2023-01-18 21:25:52 +00:00
parent 157d7596d7
commit 6b612ffb0a
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
transcoder/audio.py
View File

@ -64,8 +64,8 @@ class Audio:
def _normalization(self, read_bytes=1024 * 1024 * 10):
"""Read first read_bytes of audio stream and compute normalization.
We compute the 2.5th and 97.5th percentiles i.e. only 2.5% of samples
will clip.
We normalize based on the 0.5th and 99.5th percentiles, i.e. only <1% of
samples will clip.
:param read_bytes:
:return:
@ -77,7 +77,7 @@ class Audio:
if len(raw) > read_bytes:
break
a = self._decode(f, raw)
norm = np.max(np.abs(np.percentile(a, [2.5, 97.5])))
norm = np.max(np.abs(np.percentile(a, [0.5, 99.5])))
return 16384. / norm