Noise and the SST: A review of the problem of aircraft noise in relation to SST operation

IT is generally conceded that the noise level of our acoustical environment has increased with our social and industrial growth. The increase has been gradual and has generally gone unnoticed or has been accepted. In the main, it can be attributed to the greater use of power, a percentage of which escapes in the form of sound energy. Not only is the number of noise-producing mechanisms multiplying daily, but the surrounding and supporting structures are becoming lighter in construction and less able to absorb the sound vibrations.