Earlier this year, Google announced it was dropping a similar program to help newspapers sell print advertising.
Susan Wojcicki, Google's VP-product management, said in a blog discussing the shutdown of Google Audio Ads: “... we have decided to exit the broadcast radio business and focus our efforts in online streaming audio. We will phase out the existing Google Audio Ads and AdSense for Audio products and plan to sell the Google Radio Automation business, the software that automates broadcast radio programming. Advertisers will continue to be able to use Google Audio Ads until May 31, and broadcasters will be able to publish inventory to Google until that date as well.”
Wojcicki also said Google will continue to invest in its TV advertising business.