The leaking of the draft recommendations into music festival deaths followed by sustained attacks on the coroner "significantly undermine" and are disrespectful of the process, the state's barristers have warned.

It comes as legal sources say the NSW Coroners Court has received several violent threats, including against Deputy State Coroner Harriet Grahame, after her proposed measures to stop drug-related deaths were publicised weeks before she was due to deliver her inquest findings.

Tim Game, SC, president of the NSW Bar Association, urged commentators to withhold pre-emptive criticism of Ms Grahame, saying it could be seen as trying to "influence independent proceedings".

"Media commentary regarding a leaked draft report of the Deputy State Coroner in relation to the current inquest in relation to festival deaths is premature and fails to respect the coronial process," Mr Game said on Wednesday afternoon.