├── .gitignore
├── requirements.txt
├── README.md
└── init.py


/.gitignore:
--------------------------------------------------------------------------------
1 | compiled
2 | mp3
3 | 


--------------------------------------------------------------------------------
/requirements.txt:
--------------------------------------------------------------------------------
1 | pydub==0.23.0
2 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Ambisonic Audio
 2 | 
 3 | This repo is just a sample.
 4 | I need to add more effects and support to convert also video source.
 5 | 
 6 | ## How it works
 7 | Thanks to PyDub, the script take an audio source (mono or stereo), split the audio in several parts (each part has a duration of 0.2 sec) then put in overlay the same audio track, but with an inverse phase (I tried to make a good mix).
 8 | 
 9 | Then we can merge the parts in a single audio tracks by panning each part of 5degree angle (this make the 360 effetcs).
10 | 
11 | 
12 | It's really simple now, but I would like to improve the script with some formula and other sources.
13 | Feel free to contribute.


--------------------------------------------------------------------------------
/init.py:
--------------------------------------------------------------------------------
 1 | #!/usr/bin/env python
 2 | 
 3 | from glob import glob
 4 | from pydub import AudioSegment
 5 | from pydub.generators import WhiteNoise
 6 | from math import *
 7 | from random import *
 8 | import argparse
 9 | import subprocess
10 | import sys
11 | 
12 | parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter)
13 | 
14 | parser.add_argument('-i', type=str,
15 |                     metavar='Source audio path', required=True,
16 |                     help='Path to source file.')
17 | parser.add_argument('-o', type=str,
18 |                     metavar='Modified audio path', required=True,
19 |                     help='Path to modified file.')
20 | 
21 | args = parser.parse_args()
22 | 
23 | if not args.i and not i:
24 |     raise Exception('Missing -i Input option')
25 | if not args.o and not o:
26 |     raise Exception('Missing -o Output option')
27 | 
28 | # if len(sys.argv) > 2:
29 | # 	AudioSegment.converter = sys.argv[1] #ffmpeg installation exe dir path
30 | # 	AudioSegment.ffmpeg = sys.argv[1] #ffmpeg installation exe dir path
31 | # 	AudioSegment.ffprobe = sys.argv[2] #ffprobe installation exe dir path
32 | 
33 | def calc_pan(index):
34 | 	return cos(radians(index))
35 | 
36 | #playlist_songs = [AudioSegment.from_mp3(mp3_file) for mp3_file in glob("mp3/*.mp3")]
37 | 
38 | #first_song = playlist_songs.pop(0)
39 | interval = 0.2 * 1000 # sec
40 | song = AudioSegment.from_mp3(args.i)
41 | song_inverted = song.invert_phase()
42 | song.overlay(song_inverted)
43 | 
44 | splitted_song = splitted_song_inverted = []
45 | song_start_point = 0
46 | 
47 | print("Splitting track " + args.i + " in parts......")
48 | while song_start_point+interval < len(song):
49 |     splitted_song.append(song[song_start_point:song_start_point+interval])
50 |     song_start_point += interval
51 | 
52 | if song_start_point < len(song):
53 |     splitted_song.append(song[song_start_point:])
54 | 
55 | print("End of splitting......")
56 | print("total pieces: " + str(len(splitted_song)))
57 | 
58 | ambisonics_song = splitted_song.pop(0)
59 | pan_index = 0
60 | for piece in splitted_song:
61 |     pan_index += 5
62 |     piece = piece.pan(calc_pan(pan_index))
63 |     ambisonics_song = ambisonics_song.append(piece, crossfade=interval/50)
64 | 
65 | # lets save it!
66 | out_f = open("8d.mp3", 'wb')
67 | 
68 | ambisonics_song.export(out_f, format='mp3')
69 | 
70 | subprocess.call("ffmpeg -i 8d.mp3 -codec:a libmp3lame -b:a 320k " + args.o, shell=True)
71 | 


--------------------------------------------------------------------------------