Parts of the London Underground are “strong enough to cause damage to people with hearing problems, the BBC said.
Academic, says that the Victoria Line service is on average more, while other noises in the sections of the Pipe is equivalent to “being at a rock concert”.
Parts of Northern and Jubilee lines are so strong that require hearing protection if they were places of work.
Transport for London (TfL) says the noise is “highly unlikely” to cause long-term damage to your hearing.
Using noise meters provided by the University College London (UCL), the BBC has taken a week to record the sound levels in zones one and two.
The strongest recorded in the Metro through the centre of London between Liverpool Street and Bethnal Green, which peaked at 109 decibels – louder than a helicopter taking off nearby.
Dr Joe Sollini, of UCL Ear Institute, has analysed the BBC’s data and said: “it was concerning” like all the sounds of a place of work or above an average of 85 decibels over an eight hour period, would mean for the hearing protection should be offered.
“The loss of hearing builds up during our lives,” he said.
“If someone has been on a bit of Tube line every day for long journeys, it is perfectly possible that this could increase the risk of hearing loss and, potentially, tinnitus.”
Commuters Roberta Lenart is now wearing ear plugs when you are traveling in the metro.
“It is a deafening noise,” he said.
“If you take one or two trips a day this all adds up so I decided to wear ear protection.”
Peter Rogers, from the Institute of Acoustics, has urged TfL to introduce “quiet carriages”.
“We can do it on the train, so we should do in the London Tube, the carriages, creating a more enjoyable, quieter experience,” he said.
The london Underground is Nigel Holness said monitored noise levels on the network and was investigating other ideas to “reduce the noise”.
He added: “While customers travelling on our network you can experience the noise, the volume levels tend to be for short periods of time and the Health & Safety Executive guidance on noise suggests that it is highly unlikely to cause any long term damage to the customers’ hearing.”
Watch the full movie Inside Out London on Monday 29 January at 19:30 GMT on BBC One.