A partial answer to the first part only.
It seems that ululation is practised by Sephardic women.
In this article, it is connected to the Torah reading:
“Sephardic women, primarily those from Syria, Iran, and Iraq, make an
ululating sound after the Torah honoree (especially a bar mitzvah or
bridegroom) has concluded the final blessing or has left the bimah to
take his seat. This practice is thought to avert the evil designs of
malevolent spirits determined to cast a pall on all joyous events,
similar to the original rationale for breaking a glass at the end of
the wedding ceremony.”
In this Chabad article it is related to the Circumcision ceremony.
"In many Sephardic communities, the infant is accompanied by musical
instruments when brought to the synagogue where his circumcision will
take place. The women ululate in high staccato sounds that sound like
"Lelelelelelelele," a chant of joy in many Middle Eastern countries. 9"
Wikipedia remarks that:
"Sephardic music adapted to each of these locales, assimilating North
African high-pitched, extended ululations; Balkan rhythms, for
instance in 9/8 time; and the Turkish maqam mode."