New Delhi, Jan. 30 -- Apple on Thursday said it has acquired Q.ai, an Israeli startup working on artificial intelligence technology for audio.

Apple did not disclose terms of the deal for Q.ai, which was backed by venture capital firms Matter Venture Partners, Kleiner Perkins, Spark Capital, Exor and GV, formerly known as Google Ventures. The deal valued the startup at about $1.6 billion, according to a source familiar with the matter.

Apple did not say how it will use Q.ai's technology but said the startup has worked on new applications of machine learning to help devices understand whispered speech and to enhance audio in challenging environments.

Q.ai last year filed a patent application to use "facial skin micromovements" to detect...