Talk 15 seconds in various

CD audio: 44100 samples/sec (44.1kHz) * 16 bits/sample * 2 channel (stereo) = 176 KB/sec (=10.5 MB/min) = 1411 kbps (=1.4 Mbps)

15 seconds sound clip sample rate (Hz) sample size (bits) # channels kbps .wav filesize
15 secs stereo 16-bit 1411 kbps 44100 16 2 (stereo) 1411 2585 KB
15 secs 16-bit 705 kbps 44100 16 1 (mono) 705 1293 KB
    15 secs mono 16-bit 705 kbps 44100 16 1 705 1293 KB Below 3300 Hz. As in telephone.
    15 secs mono 16-bit 705 kbps 44100 16 1 705 1293 KB Above 3300 Hz. Filtered out in telephone.
15 secs mono 16-bit 8000 samples/s 128 kbps 8000 16 1 128 235 KB
15 secs mono 8-bit 8000 samples/s 64 kbps 8000 8 1 64 118 KB Standard digital telephone: DS0.
15 secs mono 8-bit 4000 samples/s 32 kbps 4000 8 1 32 59 KB
15 secs mono 8-bit 1000 samples/s 8 kbps 1000 8 1 8 15 KB but sounds "better" in Media Player

Compression

Bach 10 secs CD-quality .wav 1729 KB
same Bach 10 secs .ogg compression 194 KB (9x)
440Hz sine wave 10 secs CD-quality .wav 1723 KB
same 440Hz sine wave 10 secs .ogg compression 30 KB (57x)

Telephone

Try over telephone: only 300-3300 Hz is passed through (landline and long-distance trunk?)
200Hz sine wave .wav
400Hz sine wave .wav
3000Hz sine wave .wav
4000Hz sine wave .wav

TelephoneRing.ogg

Emergency Alert System's attention signal.
Two tones: 853 Hz and 960 Hz sine waves.

MIDI 30KB