Read-along format
Via ONIX, TitleLeaf indicates synchronized audio (aka read-along) for all product format records where format is “Read-along ePub” (Format ID = 19).
A product format record with a different format can convey synchronized audio by checking the “Readalong Audio” box in the “Packaging” section of the “Edit Product Format” form.
See ONIX codelist 175 for an explanation of synchronized audio:
A305: Synchronised audio – Audio synchronised to text within an e-publication, for example an EPUB3 with audio overlay. Synchronisation at least at paragraph level, and covering the full content
Excerpt from TitleLeaf ONIX 2 output:
<ProductForm>DG</ProductForm>
<ProductFormDetail>A305</ProductFormDetail>
..
<EpubType>029</EpubType>
<EpubTypeDescription>ePub, Synchronised Audio</EpubTypeDescription>
Excerpt from TitleLeaf ONIX 3 output:
<ProductForm>EA</ProductForm>
<ProductFormDetail>A305</ProductFormDetail>
TitleLeaf’s output follows the recommendations of the BISG ONIX standard.