diff --git a/docs/audio/signalquellen.md b/docs/audio/01-signalquellen.md similarity index 100% rename from docs/audio/signalquellen.md rename to docs/audio/01-signalquellen.md diff --git a/docs/audio/signalverarbeitung.md b/docs/audio/02-signalverarbeitung.md similarity index 100% rename from docs/audio/signalverarbeitung.md rename to docs/audio/02-signalverarbeitung.md diff --git a/docs/audio/signaluebertragung.md b/docs/audio/03-signaluebertragung.md similarity index 100% rename from docs/audio/signaluebertragung.md rename to docs/audio/03-signaluebertragung.md diff --git a/docs/audio/verstaerkung.md b/docs/audio/04-verstaerkung.md similarity index 100% rename from docs/audio/verstaerkung.md rename to docs/audio/04-verstaerkung.md diff --git a/docs/audio/wiedergabe.md b/docs/audio/05-wiedergabe.md similarity index 100% rename from docs/audio/wiedergabe.md rename to docs/audio/05-wiedergabe.md