TORONTO - DHX Television has joined Canadian publishers Post Media, Yellow Pages and The Chronicle Herald as the newest members of Canada's Premium Audience Exchange (CPAX).CPAX bills itself as the premier access point to top tier real time English and French digital inventory in Canada. Established by CBC/Radio-Canada, Rogers and Shaw in 2011, its automated platform delivers scalable reach and granular targeting from one convenient touch-point and now boasts more than 100 premium sites on the exchange. CPAX is powered by Index Exchange, a neutral and transparent exchange layer that enables publishers to sell their ad impressions in real-time."Since the beginning,...