All functionality in pysptk.sptk (the core API) is directly accesible from the top-level pysptk.* namespace.
For convenience, vector-to-vector functions (pysptk.mcep, pysptk.mc2b, etc) that takes an input vector as the first argment, can also accept matrix. As for matrix inputs, vector-to-vector functions are applied along with the last axis internally; e.g.
mc = pysptk.mcep(frames) # frames.shape == (num_frames, frame_len)is equivalent to:
mc = np.apply_along_axis(pysptk.mcep, -1, frames)Warning
The core APIs in pysptk.sptk package are based on the SPTK's internal APIs (e.g. code in _mgc2sp.c), so the functionalities are not exactly same as SPTK's CLI. If you find any inconsistency that should be addressed, please file an issue.
Note
Almost all of pysptk functions assume that the input array is C-contiguous and has float64 element type. For vector-to-vector functions, the input array is automatically converted to float64-typed one, the function is executed on it, and then the output array is converted to have the same type with the input you provided.
Note
pysptk.sptk