| Sequence | Characteristics | Source | URL |
| 400 | 400 Hz wave signal | Tektronix | ftp://ftp.tek.com/tv/test/streams/Element/MPEG-Audio/ |
| 1kz | 1 kHz wave signal | ||
| Bass | Chorus | MIT | http://sound.media.mit.edu/mpeg4/audio/sqam/ |
| Harp | Harpsichord | ||
| Horn | Horn | ||
| Quar | Chorus | ||
| Spfe | Trumpet | ||
| Vioo | Violin | ||
| Castanets | A classic "pre-echo" test case | LAME | http://lame.sourceforge.net/download/samples/ |
| youcandothat | Guitar |