ezdtw

ezdtw is a pure Python dynamic time warping library, intended for warping acoustic spectrograms.

This implementation uses two performance tricks:

1. Distances are computed using Scipy's cdist function.
2. The cumulative minimum distance calculation uses the numba jit compiler for a 500x speedup.

Computing the warp path between two typical zebra finch song motif spectrograms takes approximately 60ms of computation time.

Requirments

• Python 3
• numpy
• scipy
• numba

You may want to use resin for creating spectrograms.

Installation

git clone https://github.com/kylerbrown/ezdtw.git
cd ezdtw
pip install .

Usage

from ezdtw import dtw

x, y = dtw(A, B)

See an example in the example/ folder.