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Speaker verifying apparatus

A speaker and microphone technology, applied in the field of speaker verification devices, can solve complex processing of voice signals, complex structural configuration, etc.

Inactive Publication Date: 2006-03-15
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, with this technique, a complex voice-band signal must be generated which includes information about the date of occurrence etc. and is encrypted to prevent illicit decoding
Furthermore, complex processing must be performed on such voiceband signals to determine whether an overheard voice signal has been mistakenly used
As a result, devices using this technology have many complex structural configurations

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0020] figure 1 is a block diagram of the configuration of the speaker verification apparatus according to the first embodiment of the present invention.

[0021] like figure 1 As shown in the present invention, the speaker verification apparatus according to the first embodiment of the present invention includes a microphone 1, an A / D converter 2, a subtractor 3, a speaker verification part 4, a sound source part 5, an adder 6, a D / A converter 7 , speaker 8 , echo canceller (EC) 9 , and control section 10 .

[0022] The microphone 1 outputs audio signals corresponding to surrounding sounds, such as those given by the speaker. The A / D converter 2 digitizes the audio signal output by the microphone 1 . The audio signal output by the A / D converter 2 is input to the subtractor 3 .

[0023] The suppressed signal output from the echo canceller 9 is also input to the subtractor 3 . The subtractor 3 subtracts the suppression signal from the audio signal output from the A / D conv...

no. 2 example

[0044] image 3 is a block diagram of the configuration of a speaker verification apparatus according to a second embodiment of the present invention. exist image 3 in, with figure 1 The same components are designated by the same reference numerals, and their detailed explanations will be omitted.

[0045] like image 3 As shown in , the speaker verification apparatus according to the second embodiment includes a microphone 1, an A / D converter 2, a subtractor 3, a speaker verification section 4, a sound source section 5, an adder 6, a D / A converter 7 , speaker 8 , echo canceller (EC) 9 , level difference measuring section 11 , and control section 12 . That is, the speaker verification apparatus of the second embodiment differs from the speaker verification apparatus of the first embodiment in that the control section 12 is used instead of the control section 10 and the level difference measurement section 11 is added.

[0046] The level difference measuring section 11 me...

no. 3 example

[0053] Figure 5 is a block diagram of the configuration of a speaker verification apparatus according to a third embodiment of the present invention. exist Figure 5 in, with figure 1 The same components are designated by the same reference numerals, and their detailed explanations will be omitted.

[0054] like Figure 5 As shown in , the speaker verification apparatus according to the third embodiment includes a microphone 1, an A / D converter 2, a subtractor 3, a speaker verification section 4, a sound source section 5, an adder 6, a D / A converter 7, speaker 8, echo canceller (EC) 9 and control section 13. That is, the speaker verification apparatus of the third embodiment is different from the speaker verification apparatus of the first embodiment in that the control section 13 is used instead of the control section 10 .

[0055] The control section 13 includes, for example, a computer, and the control section 13 controls the operations of the speaker verification sec...

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PUM

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Abstract

When the speaker is registered or verified, the supplying part (5) outputs an interference sound signal to cause the loudspeaker (8) to emit interference sound. In the sound inputted to the microphone (1), the canceling part (3, 9) cancels the component corresponding to the interference sound fed back to the microphone (1). Using the sound in which the component corresponding to the interference sound has been canceled, the collating part (4) registers or verifies the speaker.

Description

technical field [0001] The present invention relates to a speaker verification device, which verifies the speaker with the registered speaker according to the speaker's voice. Background technique [0002] The collation of a previously registered voice signal with a newly input voice signal is disclosed in Japanese Patent Application Laid-Open Publication No. 2000-59501. [0003] However, with this technique, when the verified speaker's voice has been recorded in some way, it is possible for another person to use the recorded voice for fraudulent claims. [0004] A technique of using a voice band signal having a special frequency spectrum representing an appearance date and the like to prevent an eavesdropper from conducting illegal activities has been disclosed in Japanese Patent Application Laid-Open Publication No. 10-107790. [0005] However, with this technique, a complex voice-band signal must be generated, which includes information about the date of appearance, etc....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L17/00H04K1/00G10L15/00G10L15/06G10L15/065G10L15/07G10L15/20G10L15/28G10L17/02G10L17/06G10L21/0208H04M9/08
CPCG10K11/175G10L17/02G10L21/0208H04M9/082
Inventor 井阪岳彦三关公生
Owner KK TOSHIBA
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