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System, apparatus, method and program for signal analysis control, signal analysis and signal control

A signal control and signal analysis technology, applied in speech analysis, instruments, etc., can solve problems such as low convenience, low sound quality, and inapplicability to general signal separation

Inactive Publication Date: 2010-12-08
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the increase in the amount of computation in the receiving unit (or reproducing unit) will result in poor sound quality or poor convenience due to limitations in receiver functions.
Moreover, the structures of the first related art and the second related art are all aimed at separating sound from background noise, and there is a problem that it is not suitable for general signal separation

Method used

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  • System, apparatus, method and program for signal analysis control, signal analysis and signal control
  • System, apparatus, method and program for signal analysis control, signal analysis and signal control
  • System, apparatus, method and program for signal analysis control, signal analysis and signal control

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Embodiment approach

[0169] As described above, according to the first embodiment of the present invention, based on the analysis information of the input signal output from the transmitting unit, the receiving unit can control the input signal composed of a plurality of sound sources for each component corresponding to each sound source. Signal. In addition, since the signal analysis is performed by the transmitting unit, the receiving unit can reduce the amount of computation involved in the signal analysis.

[0170] Next, a second embodiment of the present invention will be described in detail. In the second embodiment of the present invention, an input signal composed of a target sound and a background sound will be described as an example of an input signal composed of a plurality of sound sources. use figure 1 The configuration of the second embodiment is shown. The difference from the first embodiment lies in the configurations of the signal analysis unit 101 and the signal control unit...

no. 6 approach

[0556] The sixth embodiment, its embodiment corresponds to the second embodiment and the fourth embodiment. As already explained, in addition to using the coefficient to correct the lower limit value, the upper limit value of the background sound and the signal-to-background sound value can also be used. Ratio lower limit, background sound upper limit.

[0557] As described above, according to the seventh embodiment of the present invention, in the receiving unit, each component corresponding to each sound source of the input signal can be independently controlled based on the analysis information. In addition, based on the component element drawing information, the positioning of each component element can be controlled.

[0558] In addition, since the calculation of the analysis information is performed by the transmission unit, the reception unit can reduce the amount of computation related to the calculation of the analysis information.

[0559] The eighth embodiment of t...

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Abstract

A signal analysis control system is provided with a signal analyzing section for analyzing signals inputted to a transmission section and generating analysis information, and a signal control section for controlling signals inputted to a receiving section by using the analysis information.

Description

technical field [0001] The present invention relates to a signal analysis and signal control method, device and computer program for controlling an input signal composed of a plurality of sound sources according to each component contained in a control signal. Background technique [0002] A noise suppression system (hereinafter, referred to as a noise suppressor) is known as a system for suppressing background noise in input signals from a plurality of sound sources composed of desired sound and background noise. A noise suppressor is a system that suppresses noise superimposed on a desired sound signal. In general, a noise suppressor estimates the power spectrum of the noise component using an input signal transformed into the frequency domain, and subtracts the power spectrum of the noise component from the input signal. Thereby, noise mixed in the desired sound signal is suppressed. Also, these noise suppressors are also suitable for the suppression of non-stationary n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00G10L11/02G10L21/02G10L21/0216
CPCG10L19/00
Inventor 野村俊之岛田修杉山昭彦宝珠山治
Owner NEC CORP