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This paper describes a new very low bit rate speech coder at 600 bits/s based on the MELPe algorithm (A.V. McCree and T.P. Barnwell III, 1995). This coder associated with the other bit rates at 2400 bits/s and 1200 bits/s constitute the new NATO standard STANAG 4591. The STANAG 4591 noise pre-processor is also part of the 600 bits/s coder. At 600 bits/s,(More)
This paper describes a prospective study of the contribution of a single-sensor noise pre-processing method, prior to coding, to the performance of a parametric low bit rate speech coder in adverse conditions. The 2.4kbits/s vocoder we use estimates four parameters: fundamental frequency, voicing, linear prediction coefficients and energy. Firstly, we study(More)
A concept and architecture of a personal communication system (PCS) is introduced that integrates audio communication and hearing support for the elderly and hearing-impaired through a personal hearing system (PHS). The concept envisions a central processor connected to audio headsets via a wireless body area network (WBAN). To demonstrate the concept, a(More)
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