Does defendant have to be specific in their objection to a search?

^15. The Attorney General contends defendant forfeited arguments challenging the vehicle search insofar as it was based on the anonymous tip because defendant failed to challenge the reasonableness of the search on that basis in the trial court. We conclude defendant's assertions in the trial court were sufficiently specific "to give the prosecution and [trial] court reasonable notice" of his objection. (People v. Williams (1999) 20 Cal.4th 119, 130-131 [level of specificity required depends on "the legal issue the defendant is raising and the surrounding circumstances"].)