A special sound check will happen during this year's Canada Day fireworks at The Forks.

It comes after a family pushed for change at a Winnipeg hospital following a tragic loss.

The test was prompted by parents Tim and Joelle Brown who raised concerns about the noise levels of the fireworks following the birth of their premature twin babies, Aelyn and Declan Brown, who died last July.

Babies born prematurely are extra sensitive to sound and the noise reading will help determine if better soundproofing is needed in the Neo Natal Intensive Care Unit.

"If we can do something to honour the memory of our children then that's what we want to do,” said Joelle Brown.

Aelyn and Declan were born prematurely at 24 weeks. The twins were taken to the Neo Natal Intensive Care Unit at St. Boniface Hospital—a unit where loud sounds are not allowed.

Last July, the Browns said Canada Day fireworks across the river at the Forks could be heard inside the unit.

"If a cannon's going off just outside the window, that's kind of what it was like," said Joelle Brown.

She said the noise caused added stress to the couple’s already fragile babies.

"Elevated heart rate, elevated blood pressure, turning red—those kind of things."

Aelyn and Declan died the next day on July 2.

The family said their deaths were caused by a bleed in their brains and underdeveloped lungs.

The Browns are not blaming the fireworks but the couple would like to see more soundproofing to better protect the babies in care.

"The patients that are in the NICU are the most vulnerable, the premature infants,” said Tim Brown. “Wonderful care is being delivered but ultimately we just want to see continual improvement."

After CTV News first brought you their story in January, hospital staff met with the family and senior management decided to conduct a sound test this year on Canada Day.

"We're hoping for many things—one of them is to sort of answer this question, do fireworks at the Forks make a difference,” said Heather Nowak, the director of the Woman and Child Health program at St. Boniface Hospital.

Nowak said if the fireworks are too loud and have an impact on patients, the hospital will make improvements.

The Browns said if the evidence supports change, they're confident that will happen.

"Ultimately what we want to see out of this is improved care at the NICU," said Tim Brown.