Difference between revisions of "Mass project"

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This experiment will be then testing the masking efficency and annoyance bance on the realtion of the modulation frequencies of the bands.<br/>
 
This experiment will be then testing the masking efficency and annoyance bance on the realtion of the modulation frequencies of the bands.<br/>
 
--[[User:Jcaceres|Jcaceres]] 14:10, 20 July 2006 (PDT)
 
--[[User:Jcaceres|Jcaceres]] 14:10, 20 July 2006 (PDT)
== Technical Documentation ==
 
 
The technical documentation and examples will be updated continuously in this link: [http://ccrma.stanford.edu/~jcaceres/yamaha/documentation/ MASS Technical documentation]
 
 
We are generating this documentation from the Matlab scripts. All the functions created are also documented.
 
 
--[[User:Jcaceres|Jcaceres]] 17:33, 17 July 2006 (PDT)
 
 
 
  
 
== Conference Call Meetings ==
 
== Conference Call Meetings ==
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Monday 5:30PM Stanford <br/>
 
Monday 5:30PM Stanford <br/>
 
Tuesday 9:30AM Japan
 
Tuesday 9:30AM Japan
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== Links ==
 +
 +
*[http://ccrma.stanford.edu/~jcaceres/yamaha/documentation/ MASS Technical documentation], we are generating this documentation from the Matlab scripts. All the functions created are also documented.
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 +
--[[User:Jcaceres|Jcaceres]] 17:33, 17 July 2006 (PDT)

Revision as of 16:34, 20 July 2006

Welcome to the Masking Ambient Speech Sounds project Wiki. The project is on-track to begin listening trials on the 21st of July.

Experiments

Experiment 1

The first listening tests will involve project staff members to check if things make sense. If it looks good we'll start working with non-project volunteers. Experiment 1, in the the CCRMA "Pit," will take about 30 mins. and involve 30 trials. There will be 6 conditions of masking sound crossed with 5 conditions of speech sounds. The masker (FM noise) and the speech sounds will be presented as if the sources are outside the room. We'll use the measured room model from Tokyo and the exterior sound source position (hallway). The "as if" impression will be created by convolving with the measured impulse responses.

Necessary ingredients: (x = done)

x   1) ambient room sound recording from Tokyo                              
    2) 15 sec. recordings of FM noise masker with parameter variation
x   3) 4 min. recordings of 4 conversations (animated / not-animated, crowd / pair, always 50% gender balance)
    4) 15 sec. clips cut from conversations
    5) convolved versions of 15 sec. files putting them "as if" in the hallway
    6) GUI for running randomized listening, A/B forced choice, logging results

--Cc 15:10, 17 July 2006 (PDT)

Strategies to define conditions of FM masing noise

In this first experiment, the conditions of the masking FM noise will be defined by the following criteria:

1. 3 bands of FM noise will be used.
2. The amplitude (volume) of each band will be fixed.
3. The center frequency will be also fixed (TODO: Define exact frequencies)
4. The amplitude of the modulation will be inversely proporstional to the modulation frequency.
5. The relation between of modulation frequency of the 3 bands is then the main factor to define the conditions.

This experiment will be then testing the masking efficency and annoyance bance on the realtion of the modulation frequencies of the bands.
--Jcaceres 14:10, 20 July 2006 (PDT)

Conference Call Meetings

July 18, 2006

- FM Modulation discussion (Yasushi's Comments, with Juan-Pablo's comment in parenthesis):

1) Do you have any idea how to specify frequency modulation for each frequency band? 
(based on speech freq, ~2-8 Hz) 2) The period in time for each frequency should be the same?
(no, different) 3) Modulation speed will be getting faster according to higher frequency, or,
(I don't know yet) 4) The frequency modulation considering the voice sound 5) We have to analyze how the voice sound is modulated in different frequency bands?
(I thiks this is the best way, and we have to consider that the wall is filtering almost all the high frequencies)

- Discussion of the experiment setup.

- Look at the documentation, the new example of impulse responses, and delay of arrival.

--Jcaceres 17:44, 18 July 2006 (PDT)

July 24, 2006

Monday 5:30PM Stanford
Tuesday 9:30AM Japan


Links

--Jcaceres 17:33, 17 July 2006 (PDT)