Jonas Haag jonashaag
jonashaag
/ Audio Resampling in Python.ipynb
Created
August 4, 2020 20:12
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jonashaag
/ gist:3352f2dac090380f5117cf22314f460a
Created
July 13, 2020 10:12
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| 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], |
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| 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
/ gist:7ca5b19abf537a447d0de1b923043f45
Last active
March 28, 2024 12:20
T60/RT60, C50/C80, D in Python
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| 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
/ gist:caf042606b2c8a2c0e3cbb7547479175
Created
May 20, 2020 14:21
Colab TPU force version
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| 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
/ dask-hang.py
Last active
April 28, 2020 13:46
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| if __name__ == '__main__': | |
| import dask.distributed | |
| client = dask.distributed.Client() | |
| queue = dask.distributed.Queue('queue1') | |
| def f(): | |
| return 42 |
jonashaag
/ gist:b3281697837cde458e11c6dbd48bdb41
Created
April 8, 2020 09:07
Pickle ctypes _FuncPtr
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| 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 |
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| # 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
/ canplaytype_fp.html
Created
October 12, 2018 21:13
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| <!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' |