Check patentability & draft patents in minutes with Patsnap Eureka AI!

Signal processor

A signal processing device and signal technology, applied in the directions of speaker distribution signal, electrical components, frequency response correction, etc., to achieve the effect of reducing inappropriate phenomena

Active Publication Date: 2018-12-21
SOCIONEXT INC
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the crosstalk canceling process described in Patent Document 1 has a problem in an asymmetrical acoustic space, that is, it is inappropriate to hear a sound louder than the original intended sound.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Signal processor
  • Signal processor
  • Signal processor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0065] figure 1 A configuration example of the signal processing device 1 in this embodiment, a speaker, and a listener 100 are shown. In this figure, the signal processing device 1 includes a control unit 103 , a crosstalk canceller 110 , an input unit 120 , an output unit 121 , and an output unit 122 . The signal processing device 1 processes the audio signal input from the input unit 120 by using the crosstalk canceller 110 or the like under the control of the control unit 103 , and outputs the output sound for output from the left speaker 111 from the output unit 121 . The signal is an output audio signal for output from the right speaker 112 from the output unit 122 , and both the speaker 111 and the speaker 112 are located outside the signal processing device 1 .

[0066] Here, the control unit 103 controls the crosstalk canceller 110, the output unit 121, and the output unit 122 so that the sound signal A to be reproduced is input, and only the sound reaches the left e...

Embodiment approach 2

[0086] As in Embodiment 1 Figure 2C As shown, in the acoustic characteristics actually measured, not only |GRR||GLR| are included.

[0087] In this case, if figure 1 It can be seen that the gain |XC| of the crosstalk canceller 110 becomes greater than 1 at frequencies satisfying |GRR|>|GLR| by (Equation 5).

[0088] XC=-GRR / GLR...(Formula 5)

[0089] exist Figure 2C In the frequency band above 5 kHz, although there are many frequencies where |XC|>1 is included, this is because the corresponding frequency is |GRR|>|GLR|.

[0090] Therefore, by Figure 3A The composition shown, to achieve the most appropriate control. Figure 3A A configuration example of the signal processing device 3 in Embodiment 2, speakers 111 and 112 and a listener 100 are shown. exist Figure 3A Among them, the respective input signals of speakers 111 and 112 are processed by crosstalk cancellers 201 and 202 . Let the transfer functions of the crosstalk cancellers 201 and 202 be XCL and XCR, res...

Embodiment approach 3

[0109] The control device described so far is used to process the input signal with the designed crosstalk canceller, and reproduce and control it through the speaker. It is also effective to use the device and reproduce the processed signal according to the reproduction needs.

[0110] Figure 7 Its block diagram is shown. Figure 7 A configuration example of the signal processing device 7 in Embodiment 3, speakers 111 and 112 , and a listener 100 are shown. The audio signal A is signal-processed by the crosstalk cancellers 201 (XCL) and 202 (XCR) designed by the method described above, and is recorded in the recording device 701 as an output signal. The output signal recorded on the recording device 701 is read from the recording device 701 at a predetermined timing, and reproduced by the left speaker 111 and the right speaker 112 . The playback timing can be set using, for example, an event such as a user operation or a time stamp as a trigger.

[0111] Here, the genera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A signal processor (1) for performing a crosstalk cancellation process on an inputted sound signal in a distorted acoustic space in which two speakers (111, 112) on X and Y sides (X being one of leftand right, Y being the other of left and right) are arranged, wherein the processor has a control unit (103) for controlling sounds emitted from the two speakers (111, 112) so that the sound signal ismostly canceled at the Y-side ear of a listener, the control unit (103) exercises control so that, where GYY denotes a transfer function between the Y-side speaker and the Y-side ear, GXY denotes a transfer function between the X-side speaker and the X-side ear, and GCY denotes a transfer function obtained by dividing GYY by GXY, the sound signal is emitted from the Y-side speaker and a signal derived by processing the sound signal with the transfer function GCY is emitted from the X-side speaker.

Description

technical field [0001] The present application relates to a signal processing device equipped with a crosstalk canceller. Background technique [0002] Multi-channel audio signals such as 5.1ch or 7.1ch are not only used in movies or music, but also in the field of games. When reproduction is performed by multi-channel speakers arranged at predetermined positions surrounding the listener, audio reproduction with a sense of presence is realized. However, it is difficult to install 5.1ch or 7.1ch multi-channel speakers in general households due to the problem of the place. Therefore, a 3D sound technology has been developed that uses conventional stereo speakers to simulate the same effect as multi-channel audio reproduction. [0003] For example, Patent Document 1 discloses a sound image localization device that localizes a sound image to an arbitrary position through stereo field processing. Furthermore, Patent Document 2 discloses an audio signal reproduction device that...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04S1/00
CPCH04S1/00H04R3/04H04R3/14
Inventor 阿部一任宫阪修二
Owner SOCIONEXT INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com