A NOVEL APPROACH TO RECORD SOUND

Aaswad Anil Satpute, Sheetal Mangesh Pandrekar, Imdad A. Rizvi

Abstract: Analog sound recording is done with the help of a microphone when the diaphragm vibrates due to the changes in atmospheric pressure which are recorded as a graphic representation of the sound waves on a medium such as magnetic tape. Digital recording converts the analog sound signal picked up by the microphone to a digital form by a process of digitization. Both Analog and Digital Sound recording techniques have their pros and cons. However, the common disadvantage that both these techniques suffer from is the loss in the clarity of the signal due to distortion and attenuation of signal during propagation from the source of sound to the diaphragm of the microphone. This paper presents a novel approach that will get rid of the problems like signal attenuation and distortion while recording audio signals The approach is based on mapping the vibrations of the source with a High Speed camera by using Computer Vision techniques like Object Tracking. We prove that the approach is noise-resistant and can record a signal by maintaining a high quality, which is much better than the quality of the signal recorded by a microphone. Moreover, the approach can take sound recording and reproduction to a new level by making it possible to select a source when there are multiple sources producing audio signals simultaneously. A technology based on the proposed approach will particularly benefit researchers interested in recording the minute details of the audio signal of any frequency, without being restrained by the limitations of the recording system or the distance of the source of sound.

Keywords: Acoustic Waves, Audio Recording, Computer Vision, Signal Reconstruction, Vibration Measurement

DOI: https://doi.org/10.15623/ijret.2014.0307088