Video Surveillance Signs Is It Legal In CA To Record A Conversation Without A Person's Knowledge (i.e., In A Store Along With Video)?

Is it legal in CA to record a conversation without a person's knowledge (i.e., in a store along with video)? - video surveillance signs

I know a store in California, where owners have video cameras in the store. The registry is also solid and we know that the system can expand, "" low-level talks. The owner has indicated a signal to customers that the audio recording in progress? Moreover, what is the recourse to legal action? Anyone can notify only the local police? Or is there another place to complain?