FEDERALNOE GOSUDARSTVENNOE OBRAZOVATELNOE BJUDZHETNOE UCHREZHDENIE VYSSHEGO PROFESSIONALNOGO OBRAZOVANIJA "SANKT-PETERBURGSKIJ GOSUDARSTVENNYJ UNIVERSITET TELEKOMMUNIKATSIJ IM. PROF. M.A. BONCH-BRUEVI
发明人:
DOTSENKO SERGEJ MIKHAJLOVICH,Доценко Сергей Михайлович,DOTSENKO JULIJA SERGEEVNA,Доценко Юлия Сергеевна,JAKOVLEV ALEKSEJ IVANOVICH,Яковлев Алексей Иванович,SAPRYKIN VJACHESLAV ALEKSEEVICH,Сапрыкин Вяч
申请号：
RU2012148292/14
公开号：
RU0002523340C2
申请日:
2012.11.13
申请国别(地区):
RU
年份:
2014
代理人:
摘要：
FIELD: physics.SUBSTANCE: method for acoustic representation of spatial information for users includes emitting a frequency-modulated ultrasonic pulse, binaural reception of an echo signal at two ultrasonic microphones, amplifying and converting electrical echo signals to acoustic signals, matched filtering of the echo signals, time-base expansion of the obtained responses in binaural reception channels, followed by perception of the signals by a human auditory analyser. The method includes preliminary testing for each channel of the auditory system of the user by presenting acoustic signals with different frequencies on a background of natural noise, performing statistical analysis of perception thereof by the auditory analyser of the user based on correct detection, missing and false detection of signals with respect to the total number of presented acoustic signals and obtaining adjusting gain coefficients for each channel. After matched filtering and time-base expansion the obtained responses in binaural reception channels, the method includes performing multichannel scaled-temporal filtering of responses via forward and inverse wavelet transform thereof, followed by weighted summation of output signals of each channel based on the obtained adjusting gain coefficients in each channel.EFFECT: use of the invention improves recognition of objects by improving noise-immunity of the acoustic system.6 dwgИзобретение относится к области акустики, а именно к средствам для ориентации специалистов, чья профессиональная деятельность связана с передвижением в условиях ограниченной видимости, например бойцов МЧС в очаге пожара, а также для реабилитации инвалидов по зрению. Способ акустического представления пространственной информации для пользователей заключается в излучении ультразвукового частотно-модулированного импульса, бинауральном приеме эхо-сигнала на два ультразвуковых микрофона, усилении и преобразовании электрических эхосигналов в акустические, согласованной филь
