Lecture Notes
09PC602 DIGITAL SIGNAL PROCESSING
VI Sem B.E (I.T)
Dr. J. SASIKALA Associate Professor
Department of Information Technology
Filter into two bands: 50 Hz‐3.5 KHz: sample at 8 kHz, encode at 48 KB/s 3.5 KHz‐ 7 KHz: sample at 16 kHz, encode at 16 KB/s
4 KHz‐7 KHz
Musical Sound Processing The audio effects are artificially generated using various signal processing circuits and devices, and increasingly by digital signal processing techniques, often referred as Musical Sound processing. All musical programs are produced in basically two stages:
Time Domain Operation Commonly used time-domain operations are:
Sound from each individual instrument is recorded in an acoustically inert studio on a single track of a multi-track
tape recorder
The signals from each track are manipulated by the sound engineer to add special audio effects and are combined in a mix-down system to
finally generate the stereo recording on a two-track tape
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Examples Original Image Image with Salt & Pepper Noise
Filtered Image Histogram Equalization
Contrast Stretched Image Thresholded Image