Dr Tomatis, a Paris based ear, nose and throat specialist, was one of the first to investigate the auditory environment of the foetus. His theory was that the auditory relationship between baby and mother lays the foundation for all our other relationships and is therefore the crucial point of intervention to bring about change in the person's psychological response to sound and language.

In the 1940s Tomatis devised a system of taking the listener back through the auditory experience of being in the womb and first learning to identify sound. He called this process 'sonic birth'. He began this path of discovery when he learned that if baby birds are hatched under silent foster mothers, the hatchlings will be unable to learn to sing.

The Tomatis Effect

As his initial concern was with hearing loss, Tomatis' first experiments dealt with altering the auditory curve.

When there is loss of hearing in a particular frequency it is generally not a total loss - it just means that those frequencies where there is a scotoma are heard at a lower level. Tomatis designed an apparatus called the Electronic Ear, which could manipulate the frequencies of sounds, so it could match a sound to the person's auditory curve, or it could do the opposite. It could boost the deficient frequencies to make the person hear as a normal ear would hear.

Initially Tomatis worked with singers who had lost certain frequencies from their voices. He found that the dead spots in the voice exactly matched the dead spots on the audiogram, and by correcting the hearing with the Electronic Ear he could restore the missing frequencies to the voice.

Thus he framed his first law: The voice contains only those sounds that the ear can hear.

The Joudry Method

Patricia Joudry, a Canadian author underwent the Tomatis treatment in the late 1970s and experienced total relief of her chronic insomnia, exhaustion, writers block and the listening disorder for which she was first referred to the treatment, "The Cocktail Effect", which is the inability to discriminate between different sounds in a noisy environment.

Joudry then linked up with some Benedictine monks in Saskatchewan who had trained with Tomatis specialists and were using his method in their special school. The monks offered their full support and facilities to Joudry to put out the Tomatis method on cassette for use with the Sony Walkman or another personal cassette player with a similar frequency response.

The Joudry method overcame the three major obstacles to widespread success for the Tomatis method, access, affordability and long term use. Patricia and Rafaele Joudry's book Sound Therapy Music to Recharge your Brain tells the full story of the development of the self help method and serves as an instruction manual for those undertaking the therapy.

Once the Joudry Sound Therapy cassettes were on the market, reports started coming in of unexpected results. People reporting recovery from depression, insomnia, chronic fatigue, tinnitus and hearing loss.