In this paper, we present soundwalk of Miyajima and Itsukushima Shrine which was captured with a smartphone’s built-in microphone calibrated against a typical type 1 sound level meter using NoiseExplorer our in-house developed Android app. Itsukushima Shrine (Itsukushima-jinja) is a Shinto shrine on the island of Itsukushima (popularly known as Miyajima), best known for its “floating” or “half-submerged” torii gate. It is in the southern part of Hatsukaichi in Hiroshima Prefecture in Japan. The shrine complex was listed as a UNESCO World Heritage Site in 1996. NoiseExplorer app records the audio from microphone as WAV files and the current location of the smartphone to log files. The WAV files were used to analyze sound pressure level and generate frequency spectrums and spectrograms, whereas log files were used to generate noise maps. These two capabilities of smartphones make them cheap and versatile means of recording and describing soundwalk or soundscape of any site in the world. We discuss the unique soundscape of the cross-channel ferry, the shrine itself, the footpath going up to the nearby mountain and the soundwalk captured using a smartphone. The overall noise level of 64.1 dBA is well below the typical noise level of other Japanese tourist attractions.

中文翻译：

---

使用智能手机录制宫岛和严岛神社的声步的案例研究

在本文中，我们介绍了宫岛和严岛神社的声音走道，这些声音走道是使用我们内部开发的Android应用NoiseExplorer通过针对典型1型声级计校准的智能手机内置麦克风捕获的。严岛神社（Itsukushima-jinja）是严岛神社（俗称宫岛）上的神道圣地，以“浮式”或“半淹式”鸟居而闻名。它位于日本广岛县廿日市市的南部。该神社建筑群于1996年被联合国教科文组织列为世界遗产。NoiseExplorer应用程序将来自麦克风的音频记录为WAV文件，并记录智能手机的当前位置以记录文件。WAV文件用于分析声压级并生成频谱和频谱图，而日志文件用于生成噪声图。智能手机的这两种功能使其成为一种便宜而通用的录制和描述世界上任何站点的声音步道或音景的方式。我们讨论了跨通道渡轮的独特音景，神社本身，通向附近山区的人行道以及使用智能手机捕获的音带。64.1 dBA的总体噪声水平远低于其他日本旅游景点的典型噪声水平。