The latest articles on DEV Community by miguelairs (@miguelairs). https://dev.to/miguelairs https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F651348%2F95dd0d96-8340-44df-89ea-e30c93500e35.png https://dev.to/miguelairs en miguelairs Thu, 17 Jun 2021 20:21:03 +0000 https://dev.to/miguelairs/how-do-i-select-one-audio-channel-from-a-multichannel-array-in-librosa-2ea7 https://dev.to/miguelairs/how-do-i-select-one-audio-channel-from-a-multichannel-array-in-librosa-2ea7 <div class="ltag__stackexchange--container"> <div class="ltag__stackexchange--title-container"> <div class="ltag__stackexchange--title"> <h1> <img src="https://res.cloudinary.com/practicaldev/image/fetch/s--7Gn-iPj_--/c_limit%2Cf_auto%2Cfl_progressive%2Cq_auto%2Cw_880/https://dev.to/assets/stackoverflow-logo-b42691ae545e4810b105ee957979a853a696085e67e43ee14c5699cf3e890fb4.svg" alt=""> <a href="https://stackoverflow.com/questions/68025673/how-do-i-select-one-audio-channel-from-a-multichannel-array-in-librosa" rel="noopener noreferrer"> How do I select one audio channel from a multichannel array in librosa? </a> </h1> <div class="ltag__stackexchange--post-metadata"> <span>Jun 17 '21</span> <span>Comments: 1</span> <span>Answers: 0</span> </div> </div> <a class="ltag__stackexchange--score-container" href="https://stackoverflow.com/questions/68025673/how-do-i-select-one-audio-channel-from-a-multichannel-array-in-librosa" rel="noopener noreferrer"> <img src="https://res.cloudinary.com/practicaldev/image/fetch/s--Y9mJpuJP--/c_limit%2Cf_auto%2Cfl_progressive%2Cq_auto%2Cw_880/https://dev.to/assets/stackexchange-arrow-up-eff2e2849e67d156181d258e38802c0b57fa011f74164a7f97675ca3b6ab756b.svg" alt=""> <div class="ltag__stackexchange--score-number"> 0 </div> <img src="https://res.cloudinary.com/practicaldev/image/fetch/s--wif5Zq3z--/c_limit%2Cf_auto%2Cfl_progressive%2Cq_auto%2Cw_880/https://dev.to/assets/stackexchange-arrow-down-4349fac0dd932d284fab7e4dd9846f19a3710558efde0d2dfd05897f3eeb9aba.svg" alt=""> </a> </div> <div class="ltag__stackexchange--body"> <p>I am new to librosa (and python in general) and I am getting started with audio analysis. My starting wav files contain multichannel arrays. I am wondering if I can use librosa to choose a single, specific channel. As of now, I convert my files to mono as shown here:</p>… </div> <div class="ltag__stackexchange--btn--container"> <a href="https://stackoverflow.com/questions/68025673/how-do-i-select-one-audio-channel-from-a-multichannel-array-in-librosa" rel="noopener noreferrer">Open Full Question</a> </div> </div> <br> Hi all!<br> I am new to librosa (and python in general) and I am getting started with audio analysis. My starting wav files contain multichannel arrays. I am wondering if I can use librosa to choose a single, specific channel. As of now, I convert my files to mono as shown here:<br> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>import librosa y, sr = librosa.load(file, sr=None, mono=True) </code></pre> </div> <p>However, I suspect that mono=True averages the channels instead of selecting individually. Please correct me if I am wrong! I know that SciPy allows individual channel selection:<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight plaintext"><code>from scipy.io import wavfile sample_rate, data = wavfile.read(file) #[:,1] slices the channel array spectrum, freqs, t, im = plt.specgram(data[:,1], Fs=sample_rate)) </code></pre> </div> <p>How can I slice and select an individual channel like that in librosa?</p> <p>Many thanks! Much help is greatly appreciated!</p> librosa python scipy