Patent Name:BLIND SIGNAL SEPARATION
US Patent No:6,625,587
This patent emphasizes on the implementation of Blind Signal Separation on DSP(Digital Signal Processor) hardware.The inventor uses control system block diagram approach to define operations involved in separating audio signals from various sources.Here, blind signal indicates that signal characteristics are unknown. Multiple mixtures are sampled using the multi-channel ADC(Analog-to-Digital Converter) and passed to the DSP. For faster data transfers, on-chip DMA(Direct Memory Access) is used.The DSP uses its multiplier block for forming matrices and solving them to finally obtain separated signals. The output is obtained using DAC(Digital-to-Analog Converter).
US Patent No:6,625,587
This patent emphasizes on the implementation of Blind Signal Separation on DSP(Digital Signal Processor) hardware.The inventor uses control system block diagram approach to define operations involved in separating audio signals from various sources.Here, blind signal indicates that signal characteristics are unknown. Multiple mixtures are sampled using the multi-channel ADC(Analog-to-Digital Converter) and passed to the DSP. For faster data transfers, on-chip DMA(Direct Memory Access) is used.The DSP uses its multiplier block for forming matrices and solving them to finally obtain separated signals. The output is obtained using DAC(Digital-to-Analog Converter).
Its Interesting !!!
ReplyDeleteOn chip mathematical computations for separation of audio signals that too using Multi-channel ADC, DAC and on-chip DMA indicates the complexity of the DSP Hardware as well its abiliies.And this is what DSP is meant for, if compared with other Processors.
DeleteThere are applications in multiple fields.
DeleteNice application
ReplyDeleteCheck more US patents
DeleteCan you explain the algorithms used for audio signal separation?
ReplyDeleteThe algorithm involves neural network algorithm. The usual filtering methods are used but their implementation is inspired from Neural algorithms.
Deleteinformative
ReplyDeleteCheck for IEEE papers for more
DeleteLinks are useful, thanks!
ReplyDeleteCheck IEEE papers for more.
Deleteinteresting application
ReplyDeleteCheck more US patents
DeleteWhy is it called blind signal?
ReplyDeleteHere, the input signal parameters such as its frequency is not known. The system can adapt to a considerable frequency band for audio separation. Hence , the name 'Blind Signal'.
DeleteDoes the multiplier block mean that we convolve the signals?
ReplyDeleteFor single channel separation convolution is done
DeleteFor multi channel correlation is used for matrix operations.
Deletevery helpful fornoise reduction
ReplyDeleteIt's used in communication applications.
DeleteFrequently used in audio applications.
ReplyDeleteTrue.
Delete