Spatial Audio Reproduction with Primary Ambient Extraction

Abstract

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Spatial Audio for Soundscape Design: Recording and Reproduction

“…The aim of the system is to reproduce the sound field in such a manner so as to give a sense of perception of spaciousness and directivity of sound objects located in 3D space [27]. The sounds generated in such a scenario are often referred to as virtual sound in contrast to real sound we commonly hear in everyday life [59].…”

“…The first category uses the technique of physical reconstruction of sound, which aims to synthesize the entire sound field in the listening area as close to the desired signal as possible. The second category is the perceptual reconstruction of sound, which employs psychoacoustic techniques to create a perception of spatial characteristics of sound [59]. The evolution of reproduction techniques is shown in Figure 7 along with their classification into physical and perceptual reproduction methods.…”

“…The aim of physical reconstruction of sound is to create the sound field in the listening area as close as possible to the desired sound field [59]. The oldest and one of the most popular methods of sound reproduction for soundscape uses two speakers in stereo configuration, i.e., placed at an angle of ±30° from the listener [60].…”

“…Reproduction through this technique has two parts: one is the synthesis and rendering portion of the signal, and the other is the playback system. Head related transfer functions (HRTFs) are used to describe the change in sound spectrum due to the interaction of sound waves with listener's body, head and pinna [59]. The synthesis and rendering of binaural audio is usually realized by convolving a dry sound source with the HRTF at a particular direction.…”