You can listen to đồng thanh on this page in both Northern and Southern Vietnamese accents.
How is đồng thanh used in a sentence?
For example: Cả lớp đồng thanh nói 'Dạ!'. (The whole class said 'yes' in unison.); Mọi người đồng thanh tán thành ý kiến đó. (Everyone agreed in unison with that opinion.).
Want "đồng thanh" to stick? Learn it with pictures, audio and spelling practice.