Ekphonetic notation consists of symbols added to certain sacred texts, especially lectionary readings of Biblical texts, as a mnemonic device to assist in their cantillation. Ekphonetic notation can take a number of forms, and has been used in several Jewish and Christian plainchant traditions, but is most commonly associated with Byzantine chant.
Ekphonetic notation is a method used to enhance the memorization and pronunciation of sacred texts, particularly those found in liturgical readings of the Bible. It's commonly employed in various Jewish and Christian chant traditions, with Byzantine chant being its most prominent association.