Digital signal processor (DSP) implementation system for two-channel convolution mixed voice signal blind source separation algorithm

A technology of mixed speech and blind separation, applied in the field of DSP implementation system, can solve the problems of poor specificity, non-compliance, and poor portability of PC body size, so as to achieve the effect of estimation and enhancement

Inactive Publication Date: 2012-07-25
SHANDONG UNIV
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At the same time, due to the complexity of the convolutional mixture model itself, the computational complexity of blind separation is much greater than that of the instantaneous mixture model. Most of the current algorithms are simulated and tested in the MATLAB environment of a PC with

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
  • Digital signal processor (DSP) implementation system for two-channel convolution mixed voice signal blind source separation algorithm
  • Digital signal processor (DSP) implementation system for two-channel convolution mixed voice signal blind source separation algorithm
  • Digital signal processor (DSP) implementation system for two-channel convolution mixed voice signal blind source separation algorithm

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0085] When the system is running, there are different operation steps for blind speech separation in offline and online situations. In the offline situation, the specific implementation method is as follows:

[0086] 1) Power on the system;

[0087] 2) Complete the initialization of the target board BSL (Board Support Library), LED indicator light initialization, and DIP switch initialization;

[0088] 3) Complete the global heap initialization and complete the AIC23B chip control channel parameter setting;

[0089] 4) The main function returns, and the CPU control is handed over to the DSP / BIOS real-time system kernel for real-time scheduling;

[0090] 5) Start the PRD thread, periodically detect the DIP1 pin, if the switch is turned on, then complete the receiving channel EDNA initialization, MCBSP initialization and interrupt initialization;

[0091] 6) After the EDNA transmission of the receiving channel is completed, the HWI thread is triggered. The HWI thread has the...

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

The invention provides a digital signal processor (DSP) implementation system for a two-channel convolution mixed voice signal blind source separation algorithm. The system comprises an embedded processor platform, a microphone access circuit, a power circuit and a signal pre-amplification circuit, wherein the embedded processor platform is used for finishing analogue/digital (A/D) conversion, D/A conversion and analogue signal output; the microphone access circuit comprises two single-channel microphones for acquiring voice signals and a two-channel microphone acquisition circuit; two-channel voice signals acquired by the two single-channel microphones are taken as the left and right channel signal input of a line in audio interface; the signal pre-amplification circuit effectively amplifies the signals of the microphones until gain required by the line in audio interface is achieved. A plurality of functions of microphone acquisition, pre-amplification, voice blind source separation, voice play and storage and the like of the two-channel voice signals of two speakers are realized, and the actually acquired mixed voices of the two speakers can be effectively separated under both an offline condition and an online condition.

Description

technical field [0001] The invention relates to a DSP implementation system for a blind separation algorithm of two-channel convolution mixed voice signals, belonging to the technical field of voice signal processing. Background technique [0002] Blind signal separation technology is a technology that can effectively estimate the source signal through signal processing algorithms only based on the observation signal obtained by the sensor when the source signal and transmission channel are unknown or have little prior knowledge. Due to the characteristics of the speech signal itself, speech blind separation has become a difficult and hot spot in the field of blind speech separation. It is usually used as the front-end processing of speech signal processing such as speaker positioning, speech enhancement and speech recognition, so it has great potential in practical applications. and broad prospects. [0003] Since the problem of blind separation of speech signals was propo...

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): G10L21/02G10L21/0272
Inventor 刘琚刘朝晨王倩吴强
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap