Speech compression or encoding is an application of data compression of digital audio signals containing speech. Speech coding uses speech specific parameter estimation using audio signal processing techniques to model the speech signal, combined with generic data compression algorithms to represent the resulting modelled parameters in a compact bitstream. The two most important application of speech compression are mobile telephony and voice over IP.
Sustainable competitive advantage may be realised by adoption of e-commerce strategies and business models. Rather than simply exchanging procurement transactions as with e-commerce practices, leading enterprises are executing e- commerce to share intellectual capital with their trading partners working as a value chain that provides a competitive advantage for the development and distribution of their products. The idea of giving the customer access to tracking information via the internet was a new one that had considerable appeal to the customer. For example , the use of new system also had considerable advantage to FedEx who no longer had to deal with a vast number of calls checking up on progress of consignment; because the customer could now access the system themselves. But e-commerce development and implementation could not be entirely private- customer had to become involved at some stage. The competitor was quick to catch on to the idea and UPS (United Parsal Services) was so...

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