EE 321 Project

INTAE KIM, Mouhamadou Diallo

Instruments Separation through filtering and Active

Noise Removal

Separating two instruments by filtering in MATLAB

Duet

Filtering Piano & Violin

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

Removing Voice from MP3

Example - Original

Removing Voice from MP3

Example - Removing Voice

Removing Voice from MP3

Noise Reducing Human voice: 300~3400 Hz Focus on the major voice ‘Low Cut Filter’

Voice Recording

Collect Noise Emit phase-inverted noise Cancel each other out

Noise canceling

Applications

Noise canceling

Acoustic Noise Cancellation using LMS filter

Noise Cancelation

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

Reference

Question?