Prototyping/2019-2020/T3

From XPUB & Lens-Based wiki

Prototyping session Spring 2020, in the context of Special Issue #12: Radio Implicancies

Construction.gif This page is currently being worked on.

In the work for the Special Issue, we will employ a strategy of working between systems

01

  • the colors of noise (using sox to generate white, brown, and pink noise)
  • liquidsoap fallbacks
  • mixing diverse sources of material...
  • working with silence
  • dynamics compression and loudness
  • microphones

I AM SITTING IN A (CHAT) ROOM

COMMAND-LINE AUDIO WORKSTATION

  • Why does a 8000Hz recording sound different than 44100Hz?
  • loops to test different sampling rates.... (data)compression loop ?


EDITING

  • commandline audio editing with ffmpeg...
  • cutting: extracting chunks with a start / duration
  • assembling

RIPPING

  • youtube-dl
  • ffmpeg to extract audio
  • bash scripts with loops / variables for audio manipulation
  • Example: spectrumsort

RADIO

HRTF

resources:

Question relevant to the special issue: Are we streaming in stereo / mono? At what bitrate... Does it matter?

Exercise

Create an "audio probe": a combination of particular content and a filter that (metaphorically, or literally) resonates

02

VOICE

  • text to speech / speech synthesis

Specifically the case of [MBROLA](https://github.com/numediart/MBROLA) and the "free" but not "libre" voices. https://github.com/numediart/MBROLA-voices

Espeak + MBrola https://github.com/espeak-ng/espeak-ng/blob/master/docs/mbrola.md

Projects spɛl ænd spik. hellocatfood (antonio roberts) https://www.hellocatfood.com/spell-and-speak/

"real" VOICES http://librivox.org

03

PLAYER

Radio webpage

(meta/way of working Publishing via git/githook TRY! )

  • random access media ?? (can an mp3 do a range request jump? or only ogg ??) depends on server, example of non-random access mp3
  • ubu audio player as anti-pattern ?!
  • html5 media fragments, and javascript

04

BOTS

Cross system / bots (2 parts?)

  • infobot
  • eliza
  • mud/moo
  • Bot / chatroom
  • Radio stream / schedule
  • mediawiki API (pull + push) .. example of epicpedia?
  • etherpad API (pull + push?) .. example of etherlamp (make js version?)

See: https://vnsmatrix.net/projects/corpusfantastica-moo-and-lambda-projects

05

PLEASE Leave a message

06

  • gitea webhooks
  • CGI to receive a JSON post
  • php to receive JSON post (example on gitea webhooks page)
  • CGI (making a "helloworld" / printenv with python) See CGI checklist
  • Don't forget "sudo a2enmod cgi" and "sudo systemctl restart apache2" to enable the cgi module in Apache...