comparison doc/examples.rst @ 385:edcc102fb33f

Update documentation and configuration
author Amine Sehili <amine.sehili@gmail.com>
date Tue, 02 Mar 2021 20:10:50 +0100
parents df2a320e10d5
children 81bc2375354f
comparison
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383:c030134b7870 385:edcc102fb33f
1 Loading audio data 1 Load audio data
2 ------------------ 2 ---------------
3 3
4 Audio data is loaded with the :func:`load` function which can read from audio 4 Audio data is loaded with the :func:`load` function which can read from audio
5 files, the microphone or use raw audio data. 5 files, the microphone or use raw audio data.
6 6
7 From a file 7 From a file
8 =========== 8 ===========
9 9
10 If the first argument of :func:`load` is a string, it should be a path to an audio 10 If the first argument of :func:`load` is a string, it should be a path to an
11 file. 11 audio file.
12 12
13 .. code:: python 13 .. code:: python
14 14
15 import auditok 15 import auditok
16 region = auditok.load("audio.ogg") 16 region = auditok.load("audio.ogg")
17 17
18 If input file contains a raw (headerless) audio data, passing `audio_format="raw"` 18 If input file contains raw (headerless) audio data, passing `audio_format="raw"`
19 and other audio parameters (`sampling_rate`, `sample_width` and `channels`) is 19 and other audio parameters (`sampling_rate`, `sample_width` and `channels`) is
20 mandatory. In the following example we pass audio parameters with their short 20 mandatory. In the following example we pass audio parameters with their short
21 names: 21 names:
22 22
23 .. code:: python 23 .. code:: python
40 sw = 2 40 sw = 2
41 ch = 1 41 ch = 1
42 data = b"\0" * sr * sw * ch 42 data = b"\0" * sr * sw * ch
43 region = auditok.load(data, sr=sr, sw=sw, ch=ch) 43 region = auditok.load(data, sr=sr, sw=sw, ch=ch)
44 print(region) 44 print(region)
45 # alternatively you can use
46 #region = auditok.AudioRegion(data, sr, sw, ch)
45 47
46 output: 48 output:
47 49
48 .. code:: bash 50 .. code:: bash
49 51
72 74
73 75
74 Skip part of audio data 76 Skip part of audio data
75 ======================= 77 =======================
76 78
77 If the `skip` parameter is > 0, :func:`load` will skip that leading amount of audio 79 If the `skip` parameter is > 0, :func:`load` will skip that amount in seconds
78 data: 80 of leading audio data:
79 81
80 .. code:: python 82 .. code:: python
81 83
82 import auditok 84 import auditok
83 region = auditok.load("audio.ogg", skip=2) # skip the first 2 seconds 85 region = auditok.load("audio.ogg", skip=2) # skip the first 2 seconds
84 86
85 This argument must be 0 when reading from the microphone. 87 This argument must be 0 when reading data from the microphone.
88
89
90 Limit the amount of read audio
91 ==============================
92
93 If the `max_read` parameter is > 0, :func:`load` will read at most that amount
94 in seconds of audio data:
95
96 .. code:: python
97
98 import auditok
99 region = auditok.load("audio.ogg", max_read=5)
100 assert region.duration <= 5
101
102 This argument is mandatory when reading data from the microphone.
86 103
87 104
88 Basic split example 105 Basic split example
89 ------------------- 106 -------------------
90 107
186 :func:`split` will continue reading audio data until you press ``Ctrl-C``. If 203 :func:`split` will continue reading audio data until you press ``Ctrl-C``. If
187 you want to read a specific amount of audio data, pass the desired number of 204 you want to read a specific amount of audio data, pass the desired number of
188 seconds with the `max_read` argument. 205 seconds with the `max_read` argument.
189 206
190 207
191 Accessing recorded data after split 208 Access recorded data after split
192 ----------------------------------- 209 --------------------------------
193 210
194 Using a :class:`Recorder` object you can get hold of acquired audio data: 211 Using a :class:`Recorder` object you can get hold of acquired audio data:
195 212
196 213
197 .. code:: python 214 .. code:: python
360 region = auditok.load("audio.wav") 377 region = auditok.load("audio.wav")
361 samples = region.samples 378 samples = region.samples
362 assert len(samples) == region.channels 379 assert len(samples) == region.channels
363 380
364 381
365 If `numpy` is not installed you can use: 382 If `numpy` is installed you can use:
366 383
367 .. code:: python 384 .. code:: python
368 385
369 import numpy as np 386 import numpy as np
370 region = auditok.load("audio.wav") 387 region = auditok.load("audio.wav")