CHAPTER 1 AUDIO DEMONSTRATIONS: INTRODUCTION

These audio demonstrations illustrate some of the 
application areas that are introduced in Chapter 1.
Additional examples can be found in the directories 
of other chapters.

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Audio Demo 1.1: Time-scale modification of speech and quasi-periodic audio
                  - Sinewave-based modification with
		    voicing-dependent rate factor (Section 9.5.2)

Male Speaker
------------
tfq.tea.org.10k        	   	Original 
tfq.tea.tsmtv0p8.10k  	   	Fast
tfq.tea.tsmtv0p5.10k  		Faster
tfq.tea.tsmtv1p2.10k  		Slow
tfq.tea.tsmtv1p5.10k  		Slower

Female Speaker 
--------------
ln.swm.org.10k        		Original 
ln.swm.tsmtv0p8.10k  		Fast
ln.swm.tsmtv0p5.10k  		Faster
ln.swm.tsmtv1p2.10k  		Slow
ln.swm.tsmtv1p5.10k  		Slower

Trumpet
-------
trumpet.org.10k      		Original
trumpet.tsm0p75.10k  		Fast
trumpet.tsm1p25.10k  		Slow


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Audio Demo 1.2: Time-scale modification of complex non-speech signals
		  - Phase vocoder-based modifcation 
		    with event-dependent phase coherence (Section 8.4.1)

Falling Can
-----------
falling_can1.org.10k    	Original
falling_can1.tsm2p0.10k 	Slow

Bongo Drums
-----------
bongo_drums.org.10k     	Original   
bongo_drums.tsm2p0.10k  	Slow

Loon
----
loon.org.10k     		Original
loon.tsm2p0.10k  		Slow



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Audio Demo 1.3: Pitch and vocal tract length change
                  - Sinewave-based modification 
		    (Section 9.5.2/Exercise 9.11)

Male Speaker
------------
cp.seg.org.8k            	Original
cp.seg.PitSpec_low.8k		Low pitch/Long vocal tract
cp.seg.PitSpec_high.8k     	High pitch/Short vocal tract

Female Speaker
--------------
glo.org.8k           		Original
glo.PitSpec_low.8k		Low pitch/Long vocal tract
glo.PitSpec_high.8k  		High pitch/short vocal tract

Male Speaker
------------
mono_pitch.16k          	File contains (three utterance pairs):
                		  a: Original
				  b: Monotone pitch


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Audio Demo 1.4: Speech coding 
		  - Examples of sinewave-based (Section 12.5.2)
		    and CELP-based (Section 12.7.3) coding

Male Speaker           
------------
tfq.tea.org.8k  	 	Original
tfq.tea.8000.8k          	CELP-based (g729) coding at 8000 bps
tfq.tea.4800.8k        	 	Sinewave-based coding at 4800 bps
tfq.tea.2400.8k          	Sinewave-based coding at 2400 bps


Female Speaker           
------------
mlm.tea.org.8k  	 	Original
mlm.tea.8000.8k          	CELP-based (g729) coding at 8000 bps
mlm.tea.4800.8k        	 	Sinewave-based coding at 4800 bps
mlm.tea.2400.8k          	Sinewave-based coding at 2400 bps


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Audio Demo 1.5: Post-processing enhancement
		  - Noise reduction adaptive Wiener filter 
		    with adaptivity based on 
		    spectral change (Section 13.3.3)


Cellular Telephone Noise
------------------------
s4141t03.org.10k		Original
s4141t03.enh.10k  		Enhanced


Cocktail Party Noise
--------------------
party.org_modsnr.10k		Original
party.enh_modsnr.10k  		Enhanced


Automobile Noise
----------------
auto.org_lowsnr.10k		Original
auto.enh_lowsnr.10k  		Enhanced


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Audio Demo 1.6: Pre-processing enhancement 
		  - Reduction of peak-to-rms based on 
                    sinewave analysis/synthesis (Section 9.5.2)
		  - Re-digitized from analog tape so original
		    peak-to-rms is somewhat altered
		  - Each file contains
		      a: Original
		      b: Mild reduction in peak-to-rms (~1.5 dB)
		      c: Large reduction in peak-to-rms (~3.0 dB)

post_NoNoise.16k   		Low-noise case
post_WithNoise.16k		High-noise case


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