| 1 | spektrogram | nominative case, singular | nominative case, singular |
| 2 | spektrograma | genitive case, singular | genitive case, singular |
| 3 | spektrogramu | dative case, singular | dative case, singular |
| 4 | spektrograma | accusative case, singular | accusative case, singular |
| 5 | spektrogram | accusative case, singular | accusative case, singular |
| 6 | spektrograme | singular, vocative case | singular, vocative case |
| 7 | spektrogramom | instrumental case, singular | instrumental case, singular |
| 8 | spektrogramu | prepositional case, singular | prepositional case, singular |
| 9 | spektrogramovi | nominative case, plural | nominative case, plural |
| 10 | spektrogramova | genitive case, plural | genitive case, plural |
| 11 | spektrogramovima | dative case, plural | dative case, plural |
| 12 | spektrogramove | accusative case, plural | accusative case, plural |
| 13 | spektrogramove | accusative case, plural | accusative case, plural |
| 14 | spektrogramovi | plural, vocative case | plural, vocative case |
| 15 | spektrogramovima | instrumental case, plural | instrumental case, plural |
| 16 | spektrogramovima | prepositional case, plural | prepositional case, plural |