The application you will develop with CMSIS-DSP requires a few additional Python packages besides CMSIS-DSP. These need to be installed before you start writing code.
Activate the Python environment you have chosen.
The first package to install is CMSIS-DSP:
pip install cmsisdsp
It will also install NumPy, which is a dependency of the CMSIS-DSP Python package.
You’ll be working with a Jupyter notebook, so the jupyter package must also be installed:
pip install jupyter
In the Jupyter notebook, you’ll be using widgets to play sound, so you’ll need to install some additional Jupyter widgets.
pip install ipywidgets
Finally, you’ll need packages to read sound files and display plots:
pip install soundfile
pip install matplotlib
you can now launch the Jupyter notebook:
jupyter notebook
Create a new Jupyter notebook by clicking new and selecting Python 3 (ipykernel).
The new notebook will be named Untitled. Rename it to something more descriptive.
You can now import all the required packages.
Type the following Python code into your notebook and run the cell (shift-enter). All the Python code in this learning path is intended to be executed in the same Jupyter notebook.
import cmsisdsp as dsp
import cmsisdsp.fixedpoint as fix
import numpy as np
from numpy.lib.stride_tricks import sliding_window_view
# Package for plotting
import matplotlib.pyplot as plt
# Package to display audio widgets in the notebook and upload sound files
import ipywidgets
from IPython.display import display,Audio
# To convert a sound file to a NumPy array
import io
import soundfile as sf
# To load test patterns from the Arm Virtual Hardware Echo Canceller dem
from urllib.request import urlopen
You’re now ready to move on to the next steps.