asteroza + speaker   45

Why are conversations limited to about four people? A theoretical exploration of the conversation size constraint - ScienceDirect
Which might suggest freeform conversations in meetings only really work well at 4 or less people, or else you have the ritual/social equivalent of a conch token to control speakers (which effectively cuts speaker count to compensate). The take that you are effectively tracking potentially 8 "endpoints" also suggests some connection with memory limits (you generally can handle 7 things simultaneously, maybe don't count yourself?)
psychology  conversation  audio  social  studies  meeting  speaker  size  constraint  cognitive  limit 
september 2018 by asteroza
[1303.2391v1] Electrostatic Graphene Loudspeaker
Some guys were messing around with some graphene and decided to make a jury rigged earbud. Naturally, the totally unoptimized ghetto rig graphene membrane speaker earbud is better than off the shelf low end $10 Sennheiser MX-400 earbuds when it comes to frequency response but no mention of distortion...
graphene  earbud  headphone  audio  acoustic  research  technology  electrostatic  speaker  membrane  Delicious 
april 2014 by asteroza
[1312.4006] Three-dimensional Mid-air Acoustic Manipulation by Ultrasonic Phased Arrays
This has potentially manufacturing applications, if it can be used for precision placement of electronics onto PCB's without contamination if the ultrasound doesn't do any damage.
3D  midair  acoustic  object  manipulation  manipulator  touchless  contactless  ultrasound  levitation  standing  wave  node  trap  physics  research  technology  manufacturing  phased  array  speaker  audio  soundwaves  Delicious 
february 2014 by asteroza
A combo LED lightbulb and speaker (uses bluetooth)
bluetooth  lightbulb  hardware  audio  speaker  sound  devices  light  LED  electronics  Delicious 
september 2013 by asteroza
Casio Develops Pocket-Sized Transceiver for Scuba Diving Use | 共同通信PRワイヤー
Interesting retrofit device for talking underwater. Apparently does some audio processing to deal with consonants, but being a japanese product, the inevitable question of R/L differentiation support will be asked...
ultrasonic  speaker  microphone  mic  conduction  bone  devices  electronics  hardare  communication  underwater  diver  Logosease  Casio  Delicious 
november 2012 by asteroza
Meta Perception: Human Interface
I sort of like this. Embedded AR video and audio projectors sense user gesture actions to determine desired activity, then project video and sound onto existing surfaces for a person to interact with. Pick up a banana and stick it by your ear and mouth, and the system will think you are trying to make a phone call (Banana Phone!), or you open an empty pizza box you are sitting in front of, and the system interprets that you need a computer terminal so a desktop and keyboard are projected. By applying the interfaces over existing objects, you reduce the need for interactive terminals, so this is a push towards sustainability, provided such a system is ubiquitous.
invoked  computing  AR  projector  parametric  narrow  beam  speaker  ubiquitous  UI  GUI  interface  sustainability  green  future  gesture  analysis  Delicious 
november 2011 by asteroza
Vinod Khosla's Five-Second Rule - Forbes
Interesting take on presentations. Basically, copy TV news programs; simple graphic/image, few words, make it memorable. The slight difference is when presenting, shut up after presenting a new slide to give the audience time to absorb new content.
5  second  rule  presentation  advice  tips  tricks  communication  eye  focus  image  picture  photo  visual  processing  audience  attention  speaker  skill  Delicious 
november 2011 by asteroza
Apple Invents New Peer-to-Peer Sharing Technology that Utilizes Unique Magnetic Compass and Supersonic Tone Methodologies - Patently Apple
Interesting tricks here. Doing P2P PAN peer device discovery/pairing by detecting a nearby device's magnetic signature using the onboard conventional magnetic compass (3 axis magnetometer?), as well as using supersonic (ultrasonic?) modulation of it's own speaker to tweak it's own magnetic signature as an ID beacon or coded message.
apple  patent  p2p  peer  network  device  discovery  protocol  magnetic  compass  signature  supersonic  ultrasonic  audio  tone  speaker  manipulation  WiDi  wifi  bluetooth  Delicious 
april 2011 by asteroza
Stephen P. Tarzia's webpage
So most laptops have speakers and mics that can operate somewhat at ultrasonic frequencies. Utilizing that, a crude ultrasonic environment echolocation system was devised to detect the presence of user, rather than traditional computer human input timeouts.
sonar  power  manager  windows  linux  software  microphone  speaker  audio  sound  ultrasound  user  echolocation  echo  location  environment  sensing  desktop  lock  security  laptop  Delicious 
october 2009 by asteroza
Photo from Getty Images - News, photos, topics, and quotes
Apparently an alternate use is integrated public banner signs with public address system speakers. Which isn't half bad, until you have to think about how you would integrate luminescent paint for power loss situations...
japan  Kenwood  thin  film  OLED  lighting  speaker  materials  science  research  audio  music  low  power  integrated  Delicious 
april 2009 by asteroza
Warwick Audio Technologies Ltd - Welcome to Warwick Audio Technologies
Supposed technological follow-on to those expensive electrostatic speakers (aka the plastic wrap speakers)
UK  FFL  flate  flexible  laminate  speaker  materials  science  research  technology  hardware  electronics  devices  audio  sound  phased  array  perfect  resonant  piston  music  Delicious 
april 2009 by asteroza

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