| Summary: | 碩士 === 國立中正大學 === 電機工程所 === 98 === This thesis proposes a technique of acoustic field enhancement under a listening condition using a stereo headphone. This technique is to explore stereo widening and stereo deepening of a sound field. In this work, the critical bands of psychoacoustics are adopted to decrease inter-correlation of stereo channels for stereo widening. Thereby, directions of sound sources are enhanced. Additionally, an immersive sound field is built for good sound image under fair transparency of sound quality. In stereo deepening, the field depth is improved according to phenomena of reverberation and shadowing in an acoustic environment. To reach this goal, the full search of two delay impulses in a time domain is conducted at difference critical bands. The experimental results exhibit that the proposed acoustic field enhancement technique not only effectively decreases inter-correlation of stereo channels, but also present excellent sound-field spaciousness and surrounding sense.
|
|---|
