Prototyping/2019-2020/T3: Difference between revisions

Revision as of 06:52, 9 May 2020

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

I AM SITTING IN A (CHAT) ROOM

COMMAND-LINE AUDIO WORKSTATION

the materiality of digital audio: samples, sampling rate, sample width, format, channels... See Sound and listening
Why does a 8000Hz recording sound different than 44100Hz?
playing "raw" and non-sound data ... See Sonification
the example of the phonautograph
commandline audio editing with ffmpeg...
cutting: extracting chunks with a start / duration
assembling
Spatilsation of Audio: https://www.york.ac.uk/sadie-project/database.html, head-related transfer functions (HRTFs)
CLI spatialisation of audio: ffmpeg headphone, sofalizer
bash scripts with loops / variables for audio manipulation
Example: spectrumsort
Filtering for radio/streams:
compression (as in Dynamic range compression different from audio data compression
"Loudness" and "Normalisation"... What is replaygain and why can it help?
liquidsoap for sound processing

Exercise: Create an "audio probes" a combination of particular content and a filter that (metaphorically, or literally) resonate

resources:

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

VOICE

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

PLAYER

Radio webpage

Audio player (html/js)
guest book cgi??!! (socially determined captcha !)
Player: display metadata (Metadata from icecast? https://stackoverflow.com/questions/6115531/is-it-possible-to-get-icecast-metadata-from-html5-audio-element ) TRY!
Generate podcast/RSS with json + Template (template.py(python+jinja)/makefile)
Stream access (scheduling)

(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

BOTS

Cross system / bots (2 parts?)

@@ Line 18: / Line 18: @@
 * cutting: extracting chunks with a start / duration
 * assembling
-* CLI spatialisation of audio ??
+* Spatilsation of Audio: https://www.york.ac.uk/sadie-project/database.html, head-related transfer functions (HRTFs)
+* CLI spatialisation of audio: ffmpeg headphone, sofalizer
 * [[bash]] scripts with loops / variables for audio manipulation
 * Example: [http://activearchives.org/wiki/Spectrum_sort spectrumsort]