Nettmusikk

CoIP : Labtests 2012-04-27

Setup
- Lab (Caruso)
  - Back projection screen
  - Projector design's projector
  - 2 mic
  - Toshiba camera
- Leif Arne's Office
  - Same as Caruso
  - Single mic
- Link beetween
  - analog audio two ways
  - DVI-opticat-DVI one way
  - DVI-TP-DVI one way
Tests
- Conduct and clap - Test 1
  - Over link
    - 1 to 1: Good experience
      - Vivianne: Need to speak slower/clearer than when in same room
      - Torleif: On scale for 1-10: 9 ish. Camera infront of screen is disturbing (somewhat)
    - Sound sync test (clap + visual): no noticable delay
    - 1 to 3: …
  - Same room
    - 1 to 3 - conduct clap
      - Leif arne: Better on link due to reference line at bottom of screen
      - Torleif: Focused more on hands on link, most on face when in same room
      - Leif arne: Small movements easiers in same room
      - Vivianne: More aware of choir's behaviour when in same room
    - 1 to 3 - clap-clap:
      - Vivianne: linear speedup easier then linear slowdown, more aware
      - Leif arne:
- Conduct and clap - Test 2
  - Over link
    - 1 -3 - conduct-clap
      - Vivianne: Feels more distant
    - 1 - 3 - clap-clap
    - 1 - 3 - conduct-clap no sound
    - 1 - 3 - clap-clap no sound
      - Vivianne: Feels closer then with sound
        
        Conduct differently when no sound (says other conductors too)
  - same rom
    - 1 - 3 - clap-clap eyes closed
      - choir synced but lagging (Leif arne: no prediction possible)
- Vivianne: stereo sound and video enables differentiating behavior of choir members

Hypoteses: Disscrapancies adds up, i.e. video link + audio link is worse than just video or just audio

Conduct and sing (ta-ta of Father Jakob)
- same room 1 - 3
- over link
- Difference is close to non-noticable, group is getting used to both settings
- Vivianne: More difficult than clapping (due to less percurrsivness)
- Seem to be a fast learning curve for all
  - Vivianne is used to adapting (professional) ..?
- same room 1-3 Leif Arne conduction
  - Some imprecission
- over link
- Leif Arne did equally well (non-professional) i.e. same room/over link does not effect performance

Choppy/jumpy effects (i.e. due to low frame-rate) are probably difficult to compansate by conductor

Need new test-workshop when delay can be introduced (with only Torleif from choir)
- Video and audio delayed differently is of interest
- Test different screen-sizes
- Reduce video quality if possible

Conclusion: On link quality seems good enough
- Faster frame rate could still make a difference

watching recorded conductor (woman):
- Leif Arne saw/was disturbed by low frame rate
- Vivianne and Torlaif didn't notice
watching recorded conductor (man):
- He was moving his eyes (imagening looking at choir members)
  - Has that significance for choir?