Total views : 270

Automatic Real Time Observer based Calibration of Surround System


  • Madanapalle Institute of Technology and Science, Madanapalle - 517325, Andhra Pradesh, India
  • Vels Institute of Science, Technology and Advanced Studies (VISTAS), Chennai – 600117, Tamil Nadu, India


Objective: Pleasure of enjoying the surround sound is fully based on the calibration made on the surround system. Hence, in this paper, the observer's position based volume that will react consequently and change in light of the constant position of the observer is proposed. Methods/Analysis: Many calibrations techniques based on microphone calibration are available in the existing systems. But none of them are capable of adjusting the volume of the speakers in real time. If the observer is moved from the calibrated position, the audibility of each speaker will be varied. So the observer couldn't experience a real surround. Instead, sound from nearer speaker will be high and observer losses his/her audibility of the distant speaker. Only special effects from distant speaker are audible. The proposed method adjusts the volume of speakers regularly based on the observer location. In this paper, only one observer is considered for performance analysis and the simulation is carried out in MATLAB. Findings: The area identification depends on the assumption, the sound recognition level of the considerable number of speakers can't be set at precise comparable level at all positions of the eyewitness. The discernment level every one of the speakers is almost made equivalent by the pay in the increase component of the intensifier. In this manner the spectator can hold the perceptibility of each speaker despite the fact that eyewitness moved from the aligned position. Novelty/Improvement: The recognition level of different speakers is significantly diminished when the onlooker moves near one of the speaker. The encompass framework is considered the position based remuneration which was adjusted concerning to the particular location of the observer.


Calibration, Observer, Position based, Surround System, Volume.

Full Text:

 |  (PDF views: 157)


  • Alten SR. Audio in Media. 10th ed. Cengage Learning; 2014. p. 65–7.
  • Fisher JP. Sound Track Success: A digital story teller’s Guide to audio post-production; 2012. p. 101–3.
  • Rao CS, Rao DV, Lakshminarayana S. Design and implementation analysis of OSD based audio crosstalk cancellation with multi-channel inputs on DSP processors. Indian Journal of Science and Technology. 2015 Mar; 8(5). DOI: 10.17485/ijst/2015/v8i5/60708.
  • Lukowicz P, Kunze K, Kortuem G. Smart sensing and context. 5th European Conference, Euro SSC 2010; Passau, Germany. 2010 Nov. p. 62–4.
  • Tontechnik–Rechner. Sengpiel audio-Damping of sound level vs. distance. [online]. Available from: distance.htm
  • Tontechnik-Rechner. Sengpiel audio-dB calculator. [online]. Available from: calculator-db.htm
  • Swanson DC. Signal processing for intelligent sensor systems with MATLAB. 2nd ed. CRC Press; 2012. p. 88–91.
  • Valarmathi R, Kadhar Nawaz GM. Secure data transfer through audio signal with LSA. Indian Journal of Science and Technology. 2015 Jan; 8(1). DOI: 10.17485/ijst/2015/ v8i1/52396.
  • Atefi R, Khajeali M, Rasafchi M. Effect of multi-wall carbon nanotubes with different volume fractions on surface roughness in electro discharge machining. Indian Journal of Science and Technology. 2014 Jan; 7(5). DOI: 10.17485/ ijst/2014/v7i5/50069.


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.