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A mathematical model that gives you better sound.

Streaming music over the mobile phone net has become more and more usual. Many of the FM radio stations are today transmitting their programs both through the air and over the Internet. It is desirable to find a mathematical model for the perceived quality of streaming music, to be based on measurements of the transmission quality when the transmission is subjected to noise and interference.

 

ReadMathSound

 

Perceived Quality of Service in audio streaming

Streaming music over the mobile phone net has become more and more usual. Many of the FM radio stations are today transmitting their programs both through the air and over the Internet. On-demand streaming is increasing as is the number of new international and highly specialized stations.

The stream of music to the mobile phone is typically subjected to a lot of interference, mostly due to the lack of capacity and the number of base stations. It is of great importance to understand how the user-perceived quality is dependant of this interference. This will help us develop functions that ensure a high perceived quality of listening.

The subject of the final paper is to find a mathematical model based on measuring the quality of transmission to the mobile phone in order to grade the perceived quality of real-time streaming music when it is subjected to noise and interference. Things that have to be considered are for example the volume of interference, and their distribution in time.

In order to verify the mathematical model, listening tests have be done where ordinary people listened to a number of sequences and then had to score them according to one of five grades (MOS measurement).

 

Jonas Lundqvist's master thesis in this subject:
http://epubl.ltu.se/1402-1617/2010/156/index.html