发明名称 |
METHOD OF MASKING ANALOGUE SPEECH SIGNALS |
摘要 |
FIELD: radio engineering, communication.SUBSTANCE: analogue speech signal is sampled with a standard frequency of 8000 Hz. The sampled speech signal is transmitted to the input of a bandpass filter with cut-off bands of 0.3 kHz and 3.4 kHz. Discrete Fourier transform is performed over the filtered signal to obtain expansion coefficients. Further, the expansion coefficients are rearranged in reverse order. Inverse discrete Fourier transform is then performed, after which the spectrum of the speech signal becomes inverted with respect to the initial spectrum. The disclosed transformation is characterised by that the signal becomes inverted on time.EFFECT: faster transformation.6 dwg |
申请公布号 |
RU2546614(C1) |
申请公布日期 |
2015.04.10 |
申请号 |
RU20130143585 |
申请日期 |
2013.09.26 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "PENZENSKIJ GOSUDARSTVENNYJ UNIVERSITET"(FGBOU VPO "PENZENSKIJ GOSUDARSTVENNYJ UNIVERSITET") |
发明人 |
KASHAEV EVGENIJ DMITRIEVICH;IVANOV ALEKSEJ PETROVICH;TIMONIN SERGEJ OLEGOVICH;SIMAKOV MIKHAIL NIKOLAEVICH;KORSHUNOV MIKHAIL SERGEEVICH;NUZHDIN NIKOLAJ ALEKSANDROVICH |
分类号 |
G10L19/00;H04K1/04 |
主分类号 |
G10L19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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