The one labelled 'Audio sample A' consists of someone making ... Professor Perlman stresses that there is 'no right or wrong answer' to the R/L test – but it's interesting to see how strong ...

Boom Supersonic—the developer of a 64-to-80-passenger commercial airliner that flies faster than the speed of sound—last week set speed and altitude records with its XB-1 test aircraft.

You can also get a more detailed breakdown of how we test surround sound systems at the bottom of this page, to discover how we put these systems through their paces and why we recommend them.