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EE 321 Project

Instruments Separation through filtering and Active Noise Removal. EE 321 Project. INTAE KIM, Mouhamadou Diallo. Filtering Piano & Violin. Separating two instruments by filtering in MATLAB Duet. Removing Voice from MP3. Mp3 file is usually stereo. Stereo has left and right parts

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EE 321 Project

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  1. Instruments Separation through filtering and Active Noise Removal EE 321 Project INTAE KIM, Mouhamadou Diallo

  2. Filtering Piano & Violin • Separating two instruments by filtering in MATLAB Duet

  3. Removing Voice from MP3 • Mp3 file is usually stereo. • Stereo has left and right parts Voice – Same phase on left and right. Instrument – Different phase on each side • Using MATLAB removing voice - Create matrix of Mp3 file - Separate matrix to left and right - Subtract left to right

  4. Removing Voice from MP3 • Example - Original

  5. Removing Voice from MP3 • Example - Removing Voice

  6. Voice Recording • Noise Reducing • Human voice: 300~3400 Hz • Focus on the major voice • ‘Low Cut Filter’

  7. Noise canceling • Collect Noise • Emit phase-inverted noise • Cancel each other out

  8. Noise canceling • Applications

  9. Acoustic Noise Cancellation using LMS filter

  10. Noise Cancelation

  11. Reference • http://en.wikipedia.org/wiki/Voice_frequency • http://www.themotorreport.com.au/5928/toyota-to-fit-active-noise-cancelling-to-crown-hybrid • http://pro.sony.com/bbsc/ssr/cat-audio/cat-wiredmics/product-C38B/ • http://blog.naver.com/rivelliun?Redirect=Log&logNo=140069759186

  12. Question?

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