Distortions on air: Difference between revisions

Revision as of 17:06, 24 May 2021

The Distortions on Air will be an attempt to navigate through our current (past or future) thoughts, research threads and vocal memories via distorted voices and different languages. To do that we will explore the concepts of 'code-switching' and 'audio mask'.

'Code-switching' occurs when a speaker alternates between two or more languages in the context of a single conversation or situation. There are several reason that somebody uses this technique. The 'audio mask' is a term borrowed from Laurie Anderson and refers to the electronic alteration of the voice. Similar to the theatrical mask, this audio mask served Laurie to transform her present voice into the recorded and polyphonic speech of a machine. She used it to transform to a man on stage.

We will visit different scripts of vocal distortions and reflect together on ideas, that expand to the digital/online realm and datasets, through our collective or individual alter egos. We could alternate from codes we use daily to coding languages, mother tongues, from less formal to more formal settings. The voice you choose may represent you, may not, may be unknown to others, or represent something you are against to. A voice that may be rejected or misinterpreted but helps you speak to the public. You may also use a confusing and ambiguous language, and an accent that sounds annoying to others.

This vocal online dialogue will happen through the exchange of small voice samples that we will produce. Our voice data will be processed and reconsidered. What happens when voice samples separate from us and in what contexts do they travel? Are they accumulated together with others? Do they scatter or disappear?

https://radioactive.w-i-t-m.net/

Lawrence Abu Hamdan, Code Switching, 2014

::::::..... ....... ....... ..D i s t o r t i o n s O n A i r. ... ..... .::::::::::::...... . >>>

<<<.. .. ::::::....... ....Radio Implicancies - Special Issue #15. .... ... ... . ...... ..... ..::::......

Distortions as 'audio masks'

Lowpass filter: gendered voice on air
Lowpitch filter: from female to male
Echo filter
Human microphone

online scripts (web-audio)

Lowpass

<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title></title>
</head>
<body>
  <p><button id="btnStart">START RECORDING</button>
    <button id="btnStop">STOP RECORDING</button>
  </p>
  <h2>Lowpass</h2>
  <audio id="player" controls>
  </audio><br>
  <script>
    let constraintObj = {
      audio: true,
      video: false
    };
    //handle older browsers that might implement getUserMedia in some way
    if (navigator.mediaDevices === undefined) {
      navigator.mediaDevices = {};
      navigator.mediaDevices.getUserMedia = function(constraintObj) {
        let getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
        if (!getUserMedia) {
          return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
        }
        return new Promise(function(resolve, reject) {
          getUserMedia.call(navigator, constraintObj, resolve, reject);
        });
      }
    } else {
      navigator.mediaDevices.enumerateDevices()
        .then(devices => {
          devices.forEach(device => {
            console.log(device.kind.toUpperCase(), device.label);
            //, device.deviceId
          })
        })
        .catch(err => {
          console.log(err.name, err.message);
        })
    }

    navigator.mediaDevices.getUserMedia(constraintObj)
      .then(function(mediaStreamObj) {
        let audio = document.querySelector('audio');
        audio.onloadedmetadata = function(ev) {
          audio.play();
        };

        //add listeners for saving audio
        let start = document.getElementById('btnStart');
        let stop = document.getElementById('btnStop');
        let audSave = document.getElementById('player');
        let mediaRecorder = new MediaRecorder(mediaStreamObj);
        let chunks = [];

        start.addEventListener('click', (ev) => {
          mediaRecorder.start();
          console.log(mediaRecorder.state);
        })
        stop.addEventListener('click', (ev) => {
          mediaRecorder.stop();
          console.log(mediaRecorder.state);
        });
        mediaRecorder.ondataavailable = function(ev) {
          chunks.push(ev.data);
        }
        mediaRecorder.onstop = (ev) => {
          let blob = new Blob(chunks, {
            'type': 'audio/mp3;'
          });
          chunks = [];
          var context = new AudioContext();
          let audioURL = window.URL.createObjectURL(blob);
          // lowpass
          source = context.createMediaElementSource(player);
          var biquadFilter = context.createBiquadFilter();
          biquadFilter.type = "lowpass";
          biquadFilter.frequency.value = 400;
          biquadFilter.gain.value = 25;
          source.connect(biquadFilter);
          biquadFilter.connect(context.destination);
          audSave.src = audioURL;
          console.log(audSave.src);
        }
      })
      .catch(function(err) {
        console.log(err.name, err.message);
      });
  </script>
</body>

</html>

Lowpitch

'damaged' voices | clips

Error in widget Audio: unable to write file /data/www/wdka.nl/pzwiki.wdka.nl/mw-mediadesign/extensions/Widgets/compiled_templates/wrt673ff89f84fd26_25150845	podcast Ballout, D. (2019) ‘Good Morning, Kafranbel’, This American Life: Wartime Radio
Error in widget Audio: unable to write file /data/www/wdka.nl/pzwiki.wdka.nl/mw-mediadesign/extensions/Widgets/compiled_templates/wrt673ff89f869c27_10150900	podcast Gladstone, B. and Garfield, B. (2019) ‘How Radio Makes Female Voices Sound “Shrill”’, The Disagreement Is The Point. On the Media
Error in widget Audio: unable to write file /data/www/wdka.nl/pzwiki.wdka.nl/mw-mediadesign/extensions/Widgets/compiled_templates/wrt673ff89f87e660_23061241	article Singh, A. (2018) ‘Jason Cundy: women’s voices are too high for football commentary’, The Telegraph, 25 June
Error in widget Audio: unable to write file /data/www/wdka.nl/pzwiki.wdka.nl/mw-mediadesign/extensions/Widgets/compiled_templates/wrt673ff89f890564_19279618	article Moraine, S. (2011) '“Mic check!”: #occupy, technology & the amplified voice', The Society Pages, 6 October and video Angela Davis Occupy Wall St @ Washington Sq Park Oct 30 2011 General Strike November 2

Code-switching

Alternate between languages
When using speech recognition tools the the accent may not be recognised.

Exchange voice messages, pre-recorded samples

Use the audio output as mic input

Download and install JACK:

https://jackaudio.org/downloads/

Connect the sources:

https://puredata.info/docs/JackRoutingMultichannelAndBrowserAudio/

links of experiments | projects | research

https://gitlab.com/nglk/radioactive
https://pzwiki.wdka.nl/mediadesign/Angeliki/Grad_Scripts#podcast
https://gitlab.com/nglk/radioactive_monstrosities
https://gitlab.com/nglk/speaking_with_the_machine
https://gitlab.com/nglk/gossip-gaps
https://eaiaiaiaoi.w-i-t-m.net/player.php (player / sound samples)
https://radioactive.w-i-t-m.net/ (Vocal distortions / voice samples)
https://radioslumber.net/ (Gossip Booth)

@@ Line 18: / Line 18: @@
 * <span style="color:#FEDF2E">Lowpass</span> filter: gendered voice on air
 * <span style="color:#FF00FF">Lowpitch</span> filter: from female to male
-* Repetitions/loops: cultures in loop
+* <span style="color:#FF00FF">Echo</span> filter
 * <span style="color:#ffd6e0">Human microphone</span>
@@ Line 125: / Line 125: @@
 </syntaxhighlight>
-====<span style="color:#FEDF2E">Lowpitch</span>====
+====<span style="color:#FF00FF">Lowpitch</span>====
 <syntaxhighlight lang="javascript" line='line'>