Audio device for therapeutic tracks
High-resolution music play an important role in the listening therapy per Prof. Tomatis. But what is high-resolution? In this designation, two factors come into play, namely “bit rate”, or “bits per second”, and sample rate. Regular (“red book”) audio CDs are recorded at 16 bits and 44.1 kHz. The bitrate (16 bits) indicates how many bits are available to the decoder to decode exactly one second of a piece of music. The sample rate (44.1 KHz) indicates how many times per minute the signal is recorded. The higher these values the better the music will sound during playback.
At the Mozart-Brain-Lab and Atlantis institutes, you will learn that, in most cases, we work with a bitrate rate of 24 bits and a sample rate of 48 KHz. Of course, the audio equipment must have the capability to play these rates. For many years, our centers used the audio player from the US company Alesis, which provides 24bit/48 KHz signals to the therapy headsets. Very few manufacturers sell audio players with that level of sound quality. Some of the music tracks were copied to the internal hard drive and played from there. A CD holds about 30mn of music for the therapy, while the Alesis hard drive has a storage capacity for 30 hours of music. Unfortunately, Alesis has discontinued the development and production of the Alesis Masterlink ML-9600.
As they did for the Brain-Activator, the MBL team members proceeded to develop a new audio player specially designed to meet the operating needs of the therapy. The new device needed to meet several requirements: Extra-large storage capacity for large audio files – so that CDs could be eliminated; the possibility to troubleshoot technical issues remotely via internet, and the capability to upload or play music tracks via USB. The "MBL APP system 501" fulfills all these requirements and even offers the possibility to work with the higher
sample rate of 96 kHz. As a matter of fact, from a conversation with Professor Tomatis, Jozef Vervoort learned that a greater bandwidth would probably have an even better effect. In Tomatis' time, only analog players could provide such a high resolution, and no digital devices could compete with these standards. Still today, serious music lovers swear by this high resolution, 24 bit/96 KHz sound quality for their home audio equipment. Music can now be played in the same sound quality as it was produced in the studio. The format for storing these music tracks is called FLAC (Free Lossless Audio Codec). This compression format is practically lossless and can process enormous amounts of data. The next quality level would be 24 bits and 192 khz.
The MBL APP System 501 player has room for more than 700 music tracks, which can respond to the needs of any and all centers. And there is still plenty of storage space for mother voice recordings. New tracks can be uploaded via the USB ports. If needed, the device can be troubleshot remotely via internet connection.
Picture above: Jacob Hertigers works Mozart Music and Gregorian chants for use in the therapy.