scholarly journals Tracking time differences of arrivals of multiple sound sources in the presence of clutter and missed detections

2021 ◽  
Vol 150 (5) ◽  
pp. 3399-3416
Author(s):  
Pina Gruden ◽  
Eva-Marie Nosal ◽  
Erin Oleson
Keyword(s):  
Sound Sources ◽  
Tracking Time

Role of pinnae and head movements in localizing pure tones 1The authors would like to thank Mr. Remi Humbert for implementing the experiment in Turbo Pascal and for his further assistance.

1999 ◽  
Vol 58 (3) ◽  
pp. 170-179 ◽  
Author(s):  
Barbara S. Muller ◽  
Pierre Bovet
Keyword(s):  
Sound Source ◽  
Head Movement ◽  
Movement Analysis ◽  
Head Movements ◽  
Sound Sources ◽  
Localization Accuracy ◽  
Sound Effects ◽  
Posterior Quadrant ◽  
Localization Performance ◽  
Pure Tones

Twelve blindfolded subjects localized two different pure tones, randomly played by eight sound sources in the horizontal plane. Either subjects could get information supplied by their pinnae (external ear) and their head movements or not. We found that pinnae, as well as head movements, had a marked influence on auditory localization performance with this type of sound. Effects of pinnae and head movements seemed to be additive; the absence of one or the other factor provoked the same loss of localization accuracy and even much the same error pattern. Head movement analysis showed that subjects turn their face towards the emitting sound source, except for sources exactly in the front or exactly in the rear, which are identified by turning the head to both sides. The head movement amplitude increased smoothly as the sound source moved from the anterior to the posterior quadrant.

It's about Time! Introducing Students to the Concept of Billable Hours and Improving Their Excel Skills By Creating a Spreadsheet to Track Their Time

2015 ◽  
Vol 10 (1) ◽  
pp. 37-43 ◽  
Author(s):  
Timothy C. Hinson ◽  
Lorraine S. Lee ◽  
David C. Hayes
Keyword(s):  
Public Accounting ◽  
Tracking Time ◽  
Spread Sheet ◽  
Excel Spread Sheet

ABSTRACT The concepts of billable hours and tracking time are a reality in public accounting. The purpose of this case is to educate students on the concept of billable hours and to improve the student's Excel skills through the development of a spreadsheet to track their time. Students were required to create the time-tracking Excel spread-sheet and to track all (personal and school-related) of their time for two weeks. Students were given pre/post tests and surveys and the results reflect that students significantly increased their performance in intermediate and advanced Excel skills, billable hours concepts and realize the difficulty in tracking time. Even though the students acknowledged the difficulty in tracking time, they did enjoy learning more about billable hours that they may encounter in their future professions.

THE INFLUENCE OF ROOM ACOUSTIC PARAMETERS ON THE PERCEPTION OF ROOM CHARACTERISTICS

Akustika ◽  
2020 ◽  
pp. 28
Author(s):  
Alicja Jasińska ◽  
Maurycy Kin
Keyword(s):  
Standard Deviation ◽  
Subjective Evaluation ◽  
Strength Parameter ◽  
Acoustic Parameters ◽  
Sound Sources ◽  
Different Types

The article presents the possibility of identification of rooms on the basis of binaural perception. Results of subjective evaluation were compared with the values of sound strength, G. A previously unknown sound term was introduced: the strength of spatial impression as the inverse of standard deviation of the results obtained. It turned out that the results presenting the sound strength parameter can be correlated with the subjective evaluation of the spatial impression, which is the size of the room. It can be helpful in the process of room identification, probably due to the reverberation impression in the room. Authors plan to continue the study with more rooms and different types of sound sources.

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