Temat: surround - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Surround 3-dimensional scanner
Autorzy:: Karbowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/406861.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: human body
surround scanning
Opis:: The paper describes original 3-dimensional structured light scanner used for medical application. Scanner kinematics is similar to the gantry mechanism of computed tomography apparatus. The unique feature of the presented scanner is a glass table for capturing image of a human body part. The scanner can acquire an object through the table. It gives the chance for surround scanning of the human body, using only one scanning head, without changing the body position. It is more cost effective scanner solution than multihead scanner configuration.
Źródło:: Management and Production Engineering Review; 2017, 8, 2; 99-104
2080-8208
2082-1344
Pojawia się w:: Management and Production Engineering Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: HRTF Adjustments with Audio Quality Assessments
Autorzy:: Yao, S. N.
Chen, L. J.
Powiązania:: https://bibliotekanauki.pl/articles/950215.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: HRTF
PEAQ
cone of confusion
headphones
surround
Opis:: There are an increasing number of binaural systems embedded with head-related transfer functions (HRTFs), so listeners can experience virtual environments via conventional stereo loudspeakers or head- phones. As HRTFs vary from person to person, it is difficult to select appropriated HRTFs from already existing databases for users. Once the HRTFs in a binaural audio device hardly match the real ones of the users, poor localization happens especially on the cone of confusion. The most accurate way to obtain personalized HRTFs might be doing practical measurements. It is, however, expensive and time consuming. Modifying non-individualized HRTFs may be an effort-saving way, though the modifications are always accompanied by undesired audio distortion. This paper proposes a flexible HRTF adjustment system for users to define their own HRTFs. Also, the system can keep sounds from suffering intolerable distortion based on an objective measurement tool for evaluating the quality of processed audio.
Źródło:: Archives of Acoustics; 2013, 38, 1; 55-62
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Providing Surround Sound with Loudspeakers: A Synopsis of Current Methods
Autorzy:: Blauert, J.
Rabenstein, R.
Powiązania:: https://bibliotekanauki.pl/articles/177153.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: surround sound
holography
wavefield synthesis
ambisonics
amplitude panning
summing localization
Opis:: Available methods for room-related sound presentation are introduced and evaluated. A focus is put on the synthesis side rather than on complete transmission systems. Different methods are compared using common, though quite general criteria. The methods selected for comparison are: INTENSITY STEREOPHONY after Blumlein, vector-base amplitude panning (VBAP), 5.1-SURROUND and its discrete-channel derivatives, synthesis with spherical harmonics (AMBISONICS, HOA), synthesis based on the boundary method, namely, wave-field synthesis (WFS), and binaural-cue selection methods (e.g., DIRAC). While VBAP, 5.1-SURROUND and other discrete-channel-based methods show a number of practical advantages, they do, in the end, not aim at authentic sound-field reproduction. The so-called holophonic methods that do so, particularly, HOA and WFS, have specific advantages and disadvantages which will be discussed. Yet, both methods are under continuous development, and a decision in favor of one of them should be taken from a strictly application-oriented point of view by considering relevant application-specific advantages and disadvantages in detail.
Źródło:: Archives of Acoustics; 2012, 37, 1; 5-18
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Study of Preference for Surround Microphone Techniques Used in the Recording of Choir and Instrumental Ensemble
Autorzy:: Sitek, A.
Kostek, B.
Powiązania:: https://bibliotekanauki.pl/articles/177404.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: surround microphone techniques
musical recording
direct/ambient
direct-sound all-around
Opis:: The aim of this paper is to describe the process of choosing the best surround microphone technique for recording of choir with an instrumental ensemble. First, examples of multichannel microphone techniques including those used in the recording are described. Then, the assumptions and details of music recording in Radio Gdansk Studio are provided as well as the process of mixing of the multichannel recording. The extensive subjective tests were performed employing a group of sound engineers and students in order to find the most preferable recording techniques. Because the final recording is based on the mix of "direct/ambient" and "direct-sound all-around" approaches, a subjective quality evaluation was conducted and on this basis the best rated multichannel techniques were chosen. The results show that listeners might consider different factors when choosing the best rated multichannel techniques in separate tasks, as different systems were chosen in the two tests.
Źródło:: Archives of Acoustics; 2011, 36, 2; 365-378
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The influence of environment on condition of location damage in screen of the coaxial cable
Autorzy:: Tarczyński, W.
Powiązania:: https://bibliotekanauki.pl/articles/97499.pdf
Data publikacji:: 2013
Wydawca:: Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:: damage of cable shield
surround of cable
fault localization
pulse methods
Opis:: This paper presents the results of laboratory tests of influence of the environment on pulses propagation conditions in the screen of coaxial cable. The reference level for the screen is the environment, which in real maintenance conditions, is the soil or it could be the inner work conductor. The objective of this work is to determine the possibility of using the pulse method for fault location of screen isolation of electric power cable line or telecommunication line. The special measurement system is described, which allows taking measurements of the influence of different substances types, which surround the location of damage, on the propagation of testing pulses. The results of measurements are shown in oscillograms obtained for typical substances which surround the cable in real exploitation conditions.
Źródło:: Computer Applications in Electrical Engineering; 2013, 11; 199-208
1508-4248
Pojawia się w:: Computer Applications in Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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