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Volume 31 Issue 4
Jul.  2022
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XIE Zhiwen, YIN Junxun, RAO Dan. The experiment study of spatial mask effect[J]. ACTA ACUSTICA, 2006, 31(4): 363-369. DOI: 10.15949/j.cnki.0371-0025.2006.04.012
Citation: XIE Zhiwen, YIN Junxun, RAO Dan. The experiment study of spatial mask effect[J]. ACTA ACUSTICA, 2006, 31(4): 363-369. DOI: 10.15949/j.cnki.0371-0025.2006.04.012
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The experiment study of spatial mask effect

  • 1 School of Physics Science & Technology, South China University of Technology Guangzhou 510640;

  • 2 School of Electronic & Information Engineering, SCUT Guangzhou 510640

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  • PACS: 
    • 43.66  (Psychological acoustics)
  • Received Date: December 30, 2004
  • Revised Date: June 26, 2005
  • Available Online: July 20, 2022
    Graphical Abstract
    • Abstract
  • The theoretical analysis and experiment of the masker & maskee's spatial separation in azimuth showed that when masker and maskee were spatially separated, thresholds tended to drop and produce the phenomenon of spatial unmasking. The results also showed that the spatial unmasking was frequency related. The higher the frequency was, the stronger the spatial unmasking was. The maximum unmasking was 15 dB. The main cue is that when a masker and a maskee sources are spatially separated in azimuth, the monaural Signal-to-Mask Ratio (SMR) will increase because of influence of Head Related Transfer Function (HRTF). At the same time, the binaural processing of audio information by higher aural system is another reason of spatial unmasking.
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