Preface to the Special Issue on High-reality Audio: From High-fidelity Audio to High-reality Audio

[摘要] In the mid-20th century, many youths longed for audio. There was a television program, ‘‘The Golden Ring,’’ broadcast in May 1965 by the British Broadcasting Corporation that described people who gave their all to audio, as well as the enthusiasm of revival from the devastation of World War II. The recording style described in the program became a thing of the past, while low-cost live recording is the mainstream today. In that era, one of the targets of audio was high fidelity. This word, ‘‘fidelity,’’ meant fidelity to the tone or timbre of the original sound. Audio has since evolved from the traditional two-channel stereo towards three-dimensional (3D) multi-channels by increasing the spatial dimensions. From the viewpoint of current 3D audio, ‘‘fidelity’’ may be considered to mean fidelity to the whole sound space. However, this is not easy to achieve even if state-of-the-art audio technologies are used. Therefore, we hope to propose high-reality audio aiming at reproducing the impression of the sound space.

[学科分类] 声学和超声波