Laboratories, 2010

The laboratory sessions will take place in the weeks number 47-49. They are located on the basement floor (level one) in the TMH building, Lindstedtsvägen 24, except Lab D which will take place in the anechoic room at MWL, Teknikringen 8. The Lab Instructions will be handed out at the lectures on Monday 15 November and on Wednesday 17 November. A preliminary version is also available here as a PDF.

If you are unable to attend a lab, please advise the lab assistant by e-mail as soon as possible.

Labs A and B: Kahl Hellmer (kahl.hellmer@gmail.com)
Labs C and D: Alexander Häggström(alehag@yahoo.se)

Labs A-C correspond to all of chapter 12 and chapter 13.1-13.15 in the WSound book - which you do not have. These chapters are to be read in advance. Printouts will be distributed. This handout is not available online.

Lab A is about signal manipulation with the most usual tools: level faders, equaliser, dynamics processor, and reverb unit. You will make measurements and listen to what the machines do to the sound.

Lab B is a downmix session in which you will apply what you learned in Lab A. A multitrack material of moderate quality needs to be mixed down to stereo. Your task is to make it sound as good as possible.

Lab C is about illusory reproduction of monophonic speech in a room. Given a selection of microphones, loudspeakers and equalisers, try to create the illlusion that a recorded voice is actually someone talking in the room.

Lab D is a demonstration of 3-D sound reproduction with Ambisonics. You will test various loudspeaker configurations with up to eight channels, and try to assess the localisation of sounds in different directions. This lab takes place at MWL, Teknikringen 8.

Materials for preparing for Lab D: right-click on the links and Save As... to download.
Sounds of a bumblebee (3 MB), a frog (0.7 MB), and an owl (1.6 MB). Background sounds of a forest (27 MB)and a residential backyard (3 MB).
Matlab scripts for the forest and the backyard (small text files).

The lab times are shown below. The labs start on the hour.
No food or drink in the laboratories, please.