Scott Hawley drscotthawley
-
Belmont University, Dept of Chemistry & Physics
- Nashville, TN
- http://hedges.belmont.edu/~shawley/
drscotthawley
/ get_1cycle_schedule.py
Last active Mar 29, 2019
Implementation of 1cycle learning rate schedule, but without fast.ai
View get_1cycle_schedule.py
| import numpy as np | |
| def get_1cycle_schedule(lr_max=1e-3, n_data_points=8000, epochs=200, batch_size=40, verbose=0): | |
| """ | |
| Creates a look-up table of learning rates for 1cycle schedule with cosine annealing | |
| See @sgugger's & @jeremyhoward's code in fastai library: https://github.com/fastai/fastai/blob/master/fastai/train.py | |
| Wrote this to use with my Keras and (non-fastai-)PyTorch codes. | |
| Note that in Keras, the LearningRateScheduler callback (https://keras.io/callbacks/#learningratescheduler) only operates once per epoch, not per batch | |
| So see below for Keras callback | |
View FastAICustomModelExample.ipynb
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drscotthawley
/ text_shortener.py
Last active Jun 5, 2018
Shorten text by applying various shortening rules
View text_shortener.py
| #!/usr/bin/env python | |
| # Replaces lengthy words/phrases with shorter variants | |
| # Author: Scott Hawley | |
| import pandas as pd | |
| import re | |
| import os |
drscotthawley
/ scope_with_trigger.py
Last active May 3, 2018
Realtime waveform display with tunable trigger level
View scope_with_trigger.py
| #! /usr/bin/env python3 | |
| # -*- coding: utf-8 -*- | |
| __author__ = 'Scott H. Hawley' | |
| __copyright__ = 'Scott H. Hawley' | |
| __license__ = "MIT Licence (do what you want, don't blame me)" | |
| import numpy as np | |
| import cv2 | |
| import soundcard as sc # https://github.com/bastibe/SoundCard | |
| from scipy.ndimage.interpolation import shift |
drscotthawley
/ oscilloscope.py
Last active May 17, 2018
Realtime oscilloscope in 20 lines of Python, via soundcard & OpenCV
View oscilloscope.py
| import numpy as np | |
| import cv2 | |
| import soundcard as sc # Get it from https://github.com/bastibe/SoundCard | |
| imWidth, imHeight = 1024, 512 # screen size | |
| def draw_wave(screen, mono_audio, xs, title="oscilloscope", gain=5): | |
| screen *= 0 # clear the screen | |
| ys = imHeight/2*(1 - np.clip( gain * mono_audio[0:len(xs)], -1, 1)) # the y-values of the waveform | |
| pts = np.array(list(zip(xs,ys))).astype(np.int) # pair up xs & ys | |
| cv2.polylines(screen,[pts],False,(0,255,0)) # connect points w/ lines | |
| cv2.imshow(title, screen) # show what we've got |
drscotthawley
/ apply_sox_effect.py
Last active Apr 29, 2018
Accessing Sox Audio Effects from Python via Pysox
View apply_sox_effect.py
| import pysox | |
| import librosa | |
| import numpy as np | |
| def apply_sox_effect(signal, sr, fxstr): | |
| # This writes signal to a .wav file, processes it sox to another file, loads that and returns it. | |
| # | |
| # signal: a numpy list of numbers; the audio signal | |
| # sr: the sample rate in Hz, must be an integer | |
| # fxstr: a semicolon-separated string starting with the effect name followed by parameter values in order |
drscotthawley
/ TestRenderMan_DexedVST.ipynb
Created Apr 28, 2018
Slight modification of RenderMan demo, made for Python 3 and MacOS
View TestRenderMan_DexedVST.ipynb
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drscotthawley
/ Gamepad_Eyes_OSC.pde
Last active Mar 7, 2018
"Gamepad" Input example for Wekinator, e.g. for Xbox 360 controller
View Gamepad_Eyes_OSC.pde
| // Gamepad_Eyes_OSC: demo of using game controller for OSC input. | |
| // Uses the two thumb-sticks and either the left or right bumper buttons. | |
| // | |
| // Peter Lager maintains the Game Control Plus library (for Processing), | |
| // which provides control data for joysticks and other game controllers | |
| // ...such as my Xbox 360 controller. | |
| // | |
| // This is a quick mash-up using Lager's Gcp_gamepad animated eyes example code, | |
| // (which is in the GCP library: In Processing, go to File > Examples..., then Contributed Libraries > Game Control Plus) | |
| // and Rebecca Fiebrink's Simple_Mouse_DraggedObject_2Inputs example code for Wekinator. |
drscotthawley
/ WebAudioFreqGain.html
Last active Mar 13, 2018
WebAudio OSC Output for use with Wekinator
View WebAudioFreqGain.html
| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> | |
| <html> <head> | |
| <title>WebAudio OSC Output Example - 2 Variables</title> | |
| <!-- By Scott Hawley @drscotthawley. Modified from https://github.com/automata/osc-web/blob/master/web-side/app.html | |
| No additional license restrictions are introduced with these modifications; the automata/osc-web site gives no license info. | |
| Thus as far as this author is concerned: "unlimited license": feel free to use & modify in any way you wish! --> | |
| </head> | |
| <body> | |
| <h2>WebAudio OSC Output Example - 2 Variables</h2> |
drscotthawley
/ faves2bibtex.py
Last active Jan 19, 2018
Utility to generate BibTex from list of Tweets you (or another user) have favorited ('liked'), tweeted or RT'd
View faves2bibtex.py
| #! /usr/bin/env python3 | |
| """ | |
| faves2bibtex.py | |
| Author: Scott Hawley | |
| Scrapes URLs contained in tweets you (or another user) favorited ('liked') for DOI & other bibliographic info, | |
| and tries to generate a set of BibTex entries to stdout. | |
| Status messages go to stderr | |
| Sample usage: |
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