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Create Soundcloud style waveform from Audio in Python
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from pydub import AudioSegment | |
from matplotlib import pyplot as plot | |
from PIL import Image, ImageDraw | |
import numpy as np | |
import os | |
src = "./test.mp3" | |
audio = AudioSegment.from_file(src) | |
data = np.fromstring(audio._data, np.int16) | |
fs = audio.frame_rate | |
BARS = 100 | |
BAR_HEIGHT = 60 | |
LINE_WIDTH = 5 | |
length = len(data) | |
RATIO = length/BARS | |
count = 0 | |
maximum_item = 0 | |
max_array = [] | |
highest_line = 0 | |
for d in data: | |
if count < RATIO: | |
count = count + 1 | |
if abs(d) > maximum_item: | |
maximum_item = abs(d) | |
else: | |
max_array.append(maximum_item) | |
if maximum_item > highest_line: | |
highest_line = maximum_item | |
maximum_item = 0 | |
count = 1 | |
line_ratio = highest_line/BAR_HEIGHT | |
im = Image.new('RGBA', (BARS * LINE_WIDTH, BAR_HEIGHT), (255, 255, 255, 1)) | |
draw = ImageDraw.Draw(im) | |
current_x = 1 | |
for item in max_array: | |
item_height = item/line_ratio | |
current_y = (BAR_HEIGHT - item_height)/2 | |
draw.line((current_x, current_y, current_x, current_y + item_height), fill=(169, 171, 172), width=4) | |
current_x = current_x + LINE_WIDTH | |
im.show() | |
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