... computations that it must perform to convert the sound file. If the machine that the converting does not have a math co processor it would take a very long time to complete a conversion, or in most cases be impossible to complete in real time. LPC is very sensitive to high frequencies and clipping caused by a microphone with an input level set to high, this is even more apparent when a person with a high frequency voice uses the compression as LPC removes a lot of the high frequency data, making their message (in the case of voice mail) unintelligible. LPC-10 This is another version of 'Linear Predictive Coding' but is designed for compressing voice data specifically. The compression ratio that the method achieves is as high as 26 to 1, or around 346 bytes per second. The fidelity of the sound output is not as good as other methods ...

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