摘要:
A sound source detection system for detecting a sound source (e.g., running sound of a vehicle) based on sound collected by microphones extracts characteristic amounts from the sound collected by the microphones, sets a plurality of classes according to the position of the sound source by a multi-class pattern recognition method (e.g., multi-class SVM) using the characteristic amounts, extracts characteristic amounts from sound collected by the microphones for detection of a sound source, determines a class to which the extracted characteristic amounts belong, from the preset plurality of classes, and estimates the sound source based on the class.
摘要:
An approaching vehicle detecting system that detects an approaching vehicle on the basis of sounds collected by a plurality of sound collectors mounted on a host vehicle determines whether a transverse moving direction of a sound source detected by the plurality of sound collectors is a direction approaching the host vehicle, determines whether a vertical position of the sound source detected using the plurality of sound collectors is in the same plane as that of the host vehicle, and detects that sound source as the approaching vehicle when it is determined that the transverse moving direction of the sound source is the direction approaching the host vehicle and the vertical position of the sound source is in the same plane as that of the host vehicle.
摘要:
A method, device, system, program and recording medium for impulse response measurement which can improve a measurement accuracy without lowering the S/N ratio over the whole range, from lower frequencies to higher frequencies, of a measuring signal are provided. A signal generation unit (21) of a device for impulse response measurement (10-1) generates a W-TSP signal (x(t)) having characteristics of a TSP signal and a Log-TSP signal. A D/A conversion unit (22) converts the digital signal (x(t)) into an analog signal (x(t)) and outputs the converted signal to a headphone (2) or a speaker (5). An A/D conversion unit (23) inputs an analog signal (y(t)) received by a microphone (3) or a microphone (6) and converts the inputted signal into a digital signal (y(t)). An inverse signal generation unit (24) generates an inverse W-TSP signal (x(t)). A convolution unit (25) convolutes the signal (y(t)) and the inverse W-TSP signal (x−1(t)) thereby to calculate an impulse response (g(t)).
摘要翻译:提供了用于脉冲响应测量的方法,装置,系统,程序和记录介质,其可以在不降低测量信号的低频到更高频率的整个范围上的S / N比的情况下提高测量精度。 用于脉冲响应测量(10-1)的装置的信号产生单元(21)产生具有TSP信号和Log-TSP信号特性的W-TSP信号(x(t))。 D / A转换单元(22)将数字信号(x(t))转换为模拟信号(x(t)),并将转换的信号输出到耳机(2)或扬声器(5)。 A / D转换单元(23)输入由麦克风(3)或麦克风(6)接收的模拟信号(y(t)),并将输入的信号转换为数字信号(y(t))。 逆信号生成单元(24)生成逆W-TSP信号(x(t))。 卷积单元(25)对信号(y(t))和逆W-TSP信号(x -1(t))进行卷积,从而计算脉冲响应(g(t))。
摘要:
A sound source detecting system that detects a predetermined sound source on the basis of sounds collected by sound collectors includes: a noise extracting unit that extracts a noise from signals of the collected sounds; and a noise suppressing unit that suppresses a signal component of the noise extracted by the noise extracting unit from the signals of the collected sounds. The sound source detecting unit detects a location of the predetermined sound source, such as an approaching vehicle, using information about the sounds having the signals of which the noise is suppressed.
摘要:
An approaching vehicle detecting system that detects an approaching vehicle on the basis of sounds collected by a plurality of sound collectors mounted on a host vehicle determines whether a transverse moving direction of a sound source detected by the plurality of sound collectors is a direction approaching the host vehicle, determines whether a vertical position of the sound source detected using the plurality of sound collectors is in the same plane as that of the host vehicle, and detects that sound source as the approaching vehicle when it is determined that the transverse moving direction of the sound source is the direction approaching the host vehicle and the vertical position of the sound source is in the same plane as that of the host vehicle.
摘要:
Provided is a device for detecting sound outside vehicle capable of detecting sounds outside the vehicle with high accuracy in various surrounding environments.A sound source direction detecting ECU 1 acquires sound collection information about sounds outside a vehicle which are collected by microphones 2A to 2G. The sound source direction detecting ECU 1 acquires traveling road information about the vicinity of a host vehicle on the basis of the acquired sound collection information. When the traveling road information is acquired, the sound source direction detecting ECU 1 adjusts the sound collection characteristics of the microphones 2A to 2G on the basis of the traveling road information.