Merge branch 'master' of https://github.com/dylewsky/Data_Driven_Science_Python_Demos
Merge to local branchmaster
commit
1310f879b4
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@ -51,7 +51,7 @@
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"# x = regress(b,A)\n",
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"\n",
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"# Alternative 2:\n",
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"x = np.linalg.pinv(A)*b"
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"x = np.linalg.pinv(A)@b"
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]
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},
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{
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@ -0,0 +1,108 @@
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{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "5d998359",
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"metadata": {},
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"outputs": [],
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"source": [
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"import scipy\n",
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"import scipy.io\n",
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"import IPython.display\n",
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"import numpy as np\n",
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"import librosa\n",
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"\n",
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"import matplotlib.pyplot as plt"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "1f7443a8",
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"metadata": {},
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"outputs": [],
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"source": [
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"#Example to load mat file (first 40 seconds)\n",
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"#file = scipy.io.loadmat('../DATA/beethoven_40sec.mat')\n",
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"#sound = file[\"y\"][0] # data\n",
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"#T = int(file[\"T\"][0][0]) # length in seconds\n",
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"#FS = int(file[\"FS\"][0][0]) #sample frequency\n",
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"#samples = T*FS\n",
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"#t = np.arange(samples)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "db4ff4da",
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"metadata": {},
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"outputs": [],
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"source": [
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"#original mp3 file\n",
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"FS = 24000\n",
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"y, sr = librosa.load('../DATA/beethoven.mp3', sr=FS)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "510e4bd3",
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"metadata": {},
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"outputs": [],
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"source": [
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"plt.figure(figsize=(20,5))\n",
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"plt.plot(y)\n",
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"\n",
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"#for \"mat\" file use command\n",
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"#plt.plot(t, sound)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "697e8139",
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"metadata": {},
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"outputs": [],
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"source": [
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"IPython.display.Audio(y, rate=FS)\n",
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"\n",
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"#For mat file use command \n",
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"#IPython.display.Audio(sound, rate=FS)"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"id": "72d27077",
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"metadata": {},
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"outputs": [],
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"source": [
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"plt.rcParams[\"figure.figsize\"] = (20,5)\n",
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"plt.specgram(y, NFFT=8192, Fs=FS, noverlap=2048)\n",
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"plt.colorbar()"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3 (ipykernel)",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.12"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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}
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