Some wav files

A few pure tones:

A.wav                      12K  
D.wav                      12K  
Dsharp.wav                 12K  
Fsharp.wav                 12K  
440.wav
442.wav
440-442beats.wav

Some different waveforms, all 440 Hz A:

Asine.wav

Atri.wav

Asaw.wav

Asqr.wav

Some chords. I forget what the first chord is.

Chord.wav                  12K  
DAfifth.wav                12K  
cegc.wav                   31K  
tritone.wav                12K

Douglas Rain, the voice of HAL in 2001: A Space Odyssey
cantdo.wav                103K  

Now we apply a "highpass filter" to this, cutting out all frequencies below the given values (400 Hz, etc)
cantdo_hi400.wav          103K  
cantdo_hi600.wav          103K  
cantdo_hi900.wav          103K  
cantdo_hi1200.wav         103K  
cantdo_hi1875.wav         103K  

Now we apply a "lowpass filter"
cantdo_low400.wav         103K  
cantdo_low600.wav         103K  
cantdo_low900.wav         103K  
cantdo_low1200.wav        103K  
cantdo_low1875.wav        103K  

Here it is with an echo:
cantdoecho.wav