Voice activated app which is always on in passive mode?

Hi all,

I’m new to this forum and was wondering if anyone out there could give me some information on voice-activated apps.

I am looking to develop an app with a feature similar to a standard voice-activated dictophone, i.e. it is always technically “on” but in passive mode, but only records specific words when it hears them.

I have already sourced the technology to pick up the sounds but was wondering about the voice-activated part and minimum volume/range to pick up and activate/record certain words.

Additionally, does anyone know if the passivity of the app would drain battery power? [import]uid: 144769 topic_id: 25466 reply_id: 325466[/import]