meinardmueller/libtsm

libtsm's Issues

Apple Silicon (M1) support

Hello,

libtsm fails to install (via pip) on a Mac with an Apple Silicon ARM CPU.

Not sure if there will be other issues as well, but for now it seems to be the dependency onto llvmlite/numba, which don't support Apple Silicon yet, see: numba/llvmlite#799.

Here's the error I'm seeing:

Building wheels for collected packages: numba, llvmlite
  Building wheel for numba (setup.py) ... done
  Created wheel for numba: filename=numba-0.55.1-cp39-cp39-macosx_12_0_arm64.whl size=2307917 sha256=[hash]
  Stored in directory: /Users/[user]/Library/Caches/pip/wheels/60/f4/43/[hash]
  Building wheel for llvmlite (setup.py) ... error
  error: subprocess-exited-with-error

I opened this issue here to track Apple Silicon support, but as it doesn't seem to be an issue with libtsm itself, feel free to close it.

Thanks!

division by zero

I had a division by zero problem while using the wsola_tsm() function:
.../lib/python3.8/site-packages/libtsm/tsm.py:111: RuntimeWarning: invalid value encountered in true_divide
ipa_sample = omega + hpi / ana_hop[i] # instantaneous phase advances per sample
.../lib/python3.8/site-packages/libtsm/tsm.py:209: RuntimeWarning: divide by zero encountered in true_divide
min_fac = np.min(syn_hop / ana_hop[1:]) # the minimal local stretching factor

You could add an exception for the case where an index of the "ana_hop" variable is 0.