JPS61176843U

JPS61176843U -

Info

Publication number: JPS61176843U
Application number: JP1985058329U
Authority: JP
Priority date: 1985-04-19
Filing date: 1985-04-19
Publication date: 1986-11-05
Also published as: JPH0438612Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す鳴音検出装置
のブロツク図、第２図は鳴音検出の一実施例を説
明するための配置図、第３図ａ，ｂ，ｃ，ｄは第
２図の音源から発生した音の様子を示すタイムチ
ヤートの一例、第４図ａ，ｂは第３図の各々の音
が音量化手段１，１′に加えられた場合の音量信
号図、第５図ａ，ｂは、第４図ａ，ｂが音量記録
手段２，２′に記録された状態を説明するための
音量値時刻図、第６図は各音源から２つの音量化
手段への時間差を説明するための時間差説明図、
第７図は従来の一例を示す鳴音検出装置のブロツ
ク図である。１，１′……音量化手段、２，２′……音量記
録手段、３……時間差計数手段、４……位置判別
手段、５……発生削滅時刻計数手段、６―１，６
―２，６―３……測定対象の音源、７……測定対
象外の音源、８……マイク、９……コンパレータ
ー、ａ……被測定音、ｂ，ｂ′……音量信号、ｃ
，ｃ′……音量値、ｄ，ｄ′……時刻、ｅ……発
生削滅信号、ｆ……時間差計数値、ｇ……音源位
置、ｈ……発生削滅時刻値、ｉ……音信号、ｊ…
…しきい値、ｋ……音の有無を示す信号。 Fig. 1 is a block diagram of a sound detection device showing one embodiment of the present invention, Fig. 2 is a layout diagram for explaining one embodiment of sound detection, and Figs. 3 a, b, c, and d are FIG. 2 is an example of a time chart showing the state of sound generated from a sound source; FIGS. 4a and 4b are volume signal diagrams when each of the sounds in FIG. Figures 5a and 5b are volume value time charts for explaining the state in which Figures 4a and b are recorded in the volume recording means 2 and 2', and Figure 6 is a volume value time diagram from each sound source to two volumeization means. A time difference explanatory diagram for explaining the time difference between
FIG. 7 is a block diagram of a conventional sound detection device. 1, 1'... Volume converting means, 2, 2'... Volume recording means, 3... Time difference counting means, 4... Position determining means, 5... Occurrence/annihilation time counting means, 6-1, 6
-2,6-3...Sound source to be measured, 7...Sound source not to be measured, 8...Microphone, 9...Comparator, a...Sound to be measured, b, b'...Volume signal, c
, c'...Volume value, d, d'...Time, e...Generation and extinction signal, f...Time difference count value, g...Sound source position, h...Generation and extinction time value, i...Sound Signal, j…
...Threshold value, k...Signal indicating the presence or absence of sound.

Claims

[Scope of utility model registration request]

first and second volume converting means for converting the sound arriving from the sound source into first and second volume signals proportional to the volume of the sound; inputting the volume signal and calculating the volume value and time at regular intervals first and second volume recording means for sequentially outputting the volume value and the time recorded in association with each other; and an increase/decrease in each of the volume values output from the first and second volume recording means. It determines the generation and extinction of the sound, outputs a generation and extinction signal, and further inputs the time associated with each of the volume values to determine the relative time difference between the times at which each occurrence and extinction occur. a time difference counting means for counting and outputting a time difference count value; a position determining means for inputting the time difference count value to determine the position of the sound source and outputting the sound source position; 1. A sound detecting device comprising: a generation/extinction time counting means for counting and outputting an erasure/extinction time.