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Jonas Haag jonashaag

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jonashaag / gist:3352f2dac090380f5117cf22314f460a
Created July 13, 2020 10:12
def bin_freqs(x, nbins):
return (
x.T.reshape((-1, int(x.shape[0] / nbins))).mean(axis=-1).reshape((-1, nbins)).T
)
def compact_freqs(x):
return np.vstack(
(
x[:16],
@jonashaag
jonashaag / cirm.py
Last active November 18, 2021 02:09
Python cIRM (Complex Ideal Ratio Mask), ORM (Optimal Ratio Mask), IRM (Ideal Ratio Mask), PSM (Phase Sensitive Mask)
def cirm(y, s, K=10, C=0.1, flat=True):
y = librosa.core.stft(y.astype('float64'), 256, 64).astype('complex128')
s = librosa.core.stft(s.astype('float64'), 256, 64).astype('complex128')
mr = (np.real(y) * np.real(s) + np.imag(y) * np.imag(s))/(np.real(y)**2 + np.imag(y)**2)
mi = (np.real(y) * np.imag(s) - np.imag(y) * np.real(s))/(np.real(y)**2 + np.imag(y)**2)
m = mr + 1j * mi
if flat:
return m
else:
return K * ((1 - np.exp(-C * m))/(1 + np.exp(-C * m)))
@jonashaag
jonashaag / gist:7ca5b19abf537a447d0de1b923043f45
Last active March 28, 2024 12:20
T60/RT60, C50/C80, D in Python
import librosa
from scipy.signal import butter, lfilter
SR = 8000
NFFT = 256 # change ~proportionally to SR
def butter_bandpass(lowcut, highcut, fs, order=5):
nyq = 0.5 * fs
low = lowcut / nyq
@jonashaag
jonashaag / gist:caf042606b2c8a2c0e3cbb7547479175
Created May 20, 2020 14:21
Colab TPU force version
import requests
import os
url = 'http://' + os.environ['COLAB_TPU_ADDR'].split(':')[0] + ':8475/requestversion/2.2.0-dev20200311'
resp = requests.post(url)
print(resp)
%pip install tf-nightly==2.2.0-dev20200311
@jonashaag
jonashaag / dask-hang.py
Last active April 28, 2020 13:46
if __name__ == '__main__':
import dask.distributed
client = dask.distributed.Client()
queue = dask.distributed.Queue('queue1')
def f():
return 42
@jonashaag
jonashaag / gist:b3281697837cde458e11c6dbd48bdb41
Created April 8, 2020 09:07
Pickle ctypes _FuncPtr
class PickleableCtypesFuncPtr:
"""A version of a ctypes._FuncPtr that can be pickled. The shared library
must be available in the depickling environment.
"""
def __init__(self, dll_type, lib, name):
self.__setstate__((dll_type, lib, name))
def __setstate__(self, state):
self.state = state
dll_type, lib, func = self.state
@jonashaag
jonashaag / lockgil.py
Last active May 5, 2020 15:44
Pure Python solution to locking the GIL
# Use libc in ctypes "PyDLL" mode, which prevents CPython from
# releasing the GIL during procedure calls.
_libc_name = ctypes.util.find_library("c")
if _libc_name is None:
raise RuntimeError("Cannot find libc")
libc_py = ctypes.PyDLL(_libc_name)
...
libc_py.usleep(...)
@jonashaag
jonashaag / canplaytype_fp.html
Created October 12, 2018 21:13
<!doctype html>
<script type="application/javascript">
const s = `
application/mp4
application/mp4; codecs=bogus
application/octet-stream
application/octet-stream; codecs='avc1.42E01E, mp4a.40.2'
application/octet-stream; codecs='mp4a.40.2'
application/octet-stream; codecs='theora, vorbis'
application/octet-stream; codecs='vorbis'
@jonashaag
jonashaag / django_change_translation_fallback_language.py
Created September 24, 2018 11:18
Django change translation fallback language
# This is a hack so that French translation falls back to English translation,
# not German translation (which is the default locale and the original
# strings).
from django.utils.translation import trans_real
class MyDjangoTranslation(trans_real.DjangoTranslation):
def _add_fallback(self, localedirs=None):
if self._DjangoTranslation__language[:2] in {'de', 'en'}:
return super()._add_fallback(localedirs)
@jonashaag
jonashaag / celery_model_serializer.py
Last active March 28, 2022 23:14
Celery Django model serializer – pass Django model instances as arguments to Celery tasks
"""Our convenience Celery Task wrapper that allows us to conveniently pass
model instances as Task arguments.
It "serializes" model instances to IDs and "deserializes" these IDs to model
instances upon task execution.
Serialized representation of a model instance is (sentinel, app_name, model_name, pk).
"""
import celery
from django.apps import apps