If audiogrep would be used together with movies / series which have subtitle-files (.srt), there would be a really big source for word matches. As it is specified where to look for a certain word would make it less processing intensive than scanning the whole audio file.
Example from Better Call Saul Subs:
…
14
00:00:57,369 --> 00:00:58,651
It hurts so bad.
15
00:01:00,166 --> 00:01:02,218
Look at that. Yeah, it's this one.
…
Scanning the file for bad and then using audiogrep on the range [00:00:57, 00:00:58] should identify the vocal, right?!