richard
/
python-cheatsheet
mirror of https://github.com/gto76/python-cheatsheet.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

Audio

pull/170/head
Jure Šorn 1 year ago
parent
4b89853360
commit
263c3e569a
2 changed files with 29 additions and 31 deletions
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 31
      README.md
  2. 29
      index.html

31
README.md
View File

@ -2853,22 +2853,21 @@ import wave
```
```python
<Wave_read> = wave.open('<path>', 'rb') # Opens the WAV file.
framerate = <Wave_read>.getframerate() # Number of frames per second.
nchannels = <Wave_read>.getnchannels() # Number of samples per frame.
sampwidth = <Wave_read>.getsampwidth() # Sample size in bytes.
nframes = <Wave_read>.getnframes() # Number of frames.
<params> = <Wave_read>.getparams() # Immutable collection of above.
<bytes> = <Wave_read>.readframes(nframes) # Returns next 'nframes' frames.
```
```python
<Wave_write> = wave.open('<path>', 'wb') # Truncates existing file.
<Wave_write>.setframerate(<int>) # 44100 for CD, 48000 for video.
<Wave_write>.setnchannels(<int>) # 1 for mono, 2 for stereo.
<Wave_write>.setsampwidth(<int>) # 2 for CD quality sound.
<Wave_write>.setparams(<params>) # Sets all parameters.
<Wave_write>.writeframes(<bytes>) # Appends frames to the file.
<Wave> = wave.open('<path>', 'rb') # Opens the WAV file.
<int> = <Wave>.getframerate() # Returns number of frames per second.
<int> = <Wave>.getnchannels() # Returns number of samples per frame.
<int> = <Wave>.getsampwidth() # Returns number of bytes per sample.
<params> = <Wave>.getparams() # Returns collection of listed params.
<bytes> = <Wave>.readframes(nframes) # Returns next n frames. All if -1.
```
```python
<Wave> = wave.open('<path>', 'wb') # Opens WAV file for writing.
<Wave>.setframerate(<int>) # Pass 44100 for CD, 48000 for video.
<Wave>.setnchannels(<int>) # Pass 1 for mono, 2 for stereo.
<Wave>.setsampwidth(<int>) # Pass 1 for 8-bit sound, 2 for CD.
<Wave>.setparams(<params>) # Sets all parameters.
<Wave>.writeframes(<bytes>) # Appends frames to the file.
```
* **Bytes object contains a sequence of frames, each consisting of one or more samples.**
* **In a stereo signal, the first sample of a frame belongs to the left channel.**

29
index.html
View File

@ -54,7 +54,7 @@
<body>
<header>
<aside>January 11, 2024</aside>
<aside>January 13, 2024</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</header>
@ -2340,20 +2340,19 @@ imageio.mimsave(<span class="hljs-string">'test.gif'</span>, frames, duration=<s
<div><h2 id="audio"><a href="#audio" name="audio">#</a>Audio</h2><pre><code class="python language-python hljs"><span class="hljs-keyword">import</span> wave
</code></pre></div>
<pre><code class="python language-python hljs">&lt;Wave_read&gt; = wave.open(<span class="hljs-string">'&lt;path&gt;'</span>, <span class="hljs-string">'rb'</span>) <span class="hljs-comment"># Opens the WAV file.</span>
framerate = &lt;Wave_read&gt;.getframerate() <span class="hljs-comment"># Number of frames per second.</span>
nchannels = &lt;Wave_read&gt;.getnchannels() <span class="hljs-comment"># Number of samples per frame.</span>
sampwidth = &lt;Wave_read&gt;.getsampwidth() <span class="hljs-comment"># Sample size in bytes.</span>
nframes = &lt;Wave_read&gt;.getnframes() <span class="hljs-comment"># Number of frames.</span>
&lt;params&gt; = &lt;Wave_read&gt;.getparams() <span class="hljs-comment"># Immutable collection of above.</span>
&lt;bytes&gt; = &lt;Wave_read&gt;.readframes(nframes) <span class="hljs-comment"># Returns next 'nframes' frames.</span>
<pre><code class="python language-python hljs">&lt;Wave&gt; = wave.open(<span class="hljs-string">'&lt;path&gt;'</span>, <span class="hljs-string">'rb'</span>) <span class="hljs-comment"># Opens the WAV file.</span>
&lt;int&gt; = &lt;Wave&gt;.getframerate() <span class="hljs-comment"># Returns number of frames per second.</span>
&lt;int&gt; = &lt;Wave&gt;.getnchannels() <span class="hljs-comment"># Returns number of samples per frame.</span>
&lt;int&gt; = &lt;Wave&gt;.getsampwidth() <span class="hljs-comment"># Returns number of bytes per sample.</span>
&lt;params&gt; = &lt;Wave&gt;.getparams() <span class="hljs-comment"># Returns collection of listed params.</span>
&lt;bytes&gt; = &lt;Wave&gt;.readframes(nframes) <span class="hljs-comment"># Returns next n frames. All if -1.</span>
</code></pre>
<pre><code class="python language-python hljs">&lt;Wave_write&gt; = wave.open(<span class="hljs-string">'&lt;path&gt;'</span>, <span class="hljs-string">'wb'</span>) <span class="hljs-comment"># Truncates existing file.</span>
&lt;Wave_write&gt;.setframerate(&lt;int&gt;) <span class="hljs-comment"># 44100 for CD, 48000 for video.</span>
&lt;Wave_write&gt;.setnchannels(&lt;int&gt;) <span class="hljs-comment"># 1 for mono, 2 for stereo.</span>
&lt;Wave_write&gt;.setsampwidth(&lt;int&gt;) <span class="hljs-comment"># 2 for CD quality sound.</span>
&lt;Wave_write&gt;.setparams(&lt;params&gt;) <span class="hljs-comment"># Sets all parameters.</span>
&lt;Wave_write&gt;.writeframes(&lt;bytes&gt;) <span class="hljs-comment"># Appends frames to the file.</span>
<pre><code class="python language-python hljs">&lt;Wave&gt; = wave.open(<span class="hljs-string">'&lt;path&gt;'</span>, <span class="hljs-string">'wb'</span>) <span class="hljs-comment"># Opens WAV file for writing.</span>
&lt;Wave&gt;.setframerate(&lt;int&gt;) <span class="hljs-comment"># Pass 44100 for CD, 48000 for video.</span>
&lt;Wave&gt;.setnchannels(&lt;int&gt;) <span class="hljs-comment"># Pass 1 for mono, 2 for stereo.</span>
&lt;Wave&gt;.setsampwidth(&lt;int&gt;) <span class="hljs-comment"># Pass 1 for 8-bit sound, 2 for CD.</span>
&lt;Wave&gt;.setparams(&lt;params&gt;) <span class="hljs-comment"># Sets all parameters.</span>
&lt;Wave&gt;.writeframes(&lt;bytes&gt;) <span class="hljs-comment"># Appends frames to the file.</span>
</code></pre>
<ul>
<li><strong>Bytes object contains a sequence of frames, each consisting of one or more samples.</strong></li>
@ -2933,7 +2932,7 @@ $ deactivate <span class="hljs-comment"># Deactivates the activ
<footer>
<aside>January 11, 2024</aside>
<aside>January 13, 2024</aside>
<a href="https://gto76.github.io" rel="author">Jure Šorn</a>
</footer>

Write Preview
Loading…
Cancel
Save