| |||
| Sprachfrequenzsignal n | |||
| |||
| Tonfrequenzsignal n | |||
|
voice-frequency : 71 phrases in 12 subjects |
| Communications | 25 |
| Electronics | 12 |
| General | 2 |
| Information technology | 14 |
| Measuring instruments | 1 |
| Medical appliances | 1 |
| Physics | 3 |
| Power lines | 1 |
| Technology | 5 |
| Telecommunications | 3 |
| Telegraphy | 2 |
| Telephony | 2 |