TILE SOUNDNESS DETERMINATION DEVICE AND METHOD

To provide a tile soundness determination device capable of making a reliable determination even if a vibration force such as a striking force changes.SOLUTION: A tile soundness determination device 10 comprises: a frequency characteristic acquisition unit 2 for acquiring a frequency characteristic consisting of the sound pressure level of each frequency band, based on a tapping sound of a tile including an ambient sound detected by a microphone 20; a storage unit 5 for storing reference frequency characteristics of sound tiles; a specific sound pressure relative level difference calculation unit 3a with a reference frequency characteristic for each frequency band; an average sound pressure relative level difference calculation unit 3b; and a soundness determination unit 4 for determining that the vibrated tile is unhealthy when a total value or maximum value of an absolute value of a difference between a specific sound pressure relative level difference and an average sound pressure relative level difference exceeds a predetermined threshold, or when the maximum absolute value of the difference between the sound pressure relative level in each frequency band of the frequency characteristic and the sound pressure relative level in the relevant frequency band of the reference frequency characteristic exceeds the predetermined threshold.SELECTED DRAWING: Figure 1 【課題】打撃力などの加振力が変化しても確実な判定を図ることが可能なタイル健全性判定装置を提供する。【解決手段】タイル健全性判定装置１０は、マイクロホン２０により検出された周囲音を含むタイルの打音に基いて、各周波数帯域の音圧レベルからなる周波数特性を取得する周波数特性取得部２と、健全なタイルの基準周波数特性が記憶されている記憶部５と、各周波数帯域ごとに基準周波数特性との特定音圧相対レベル差算出部３ａと、平均音圧相対レベル差算出部３ｂと、特定音圧相対レベル差と平均音圧相対レベル差との差の絶対値の合計値又は最大値が所定の閾値を超える場合、又は、周波数特性の各周波数帯域における音圧相対レベルと基準周波数特性の当該周波数帯域における音圧相対レベルとの差の絶対値最大値が所定の閾値を超える場合、前記加振されたタイルは不健全であると判定する健全性判定部４とを備える。【選択図】図１