Meaning in this text
That which is heard — referring to the Vedas as divinely revealed sound. The Bhagavatam presents itself as the natural culmination of all shruti, containing the complete essence of Vedic teaching in a form accessible through bhakti rather than ritual mastery.
On this site, Shruti is treated as a reading aid rather than a final doctrinal definition: use it to move from a question about a term into the chapters where the term actually appears.