What the principle of speech encoding?

[awan]

speech encoding

what is the basic phenomenom of speech encoding

 

[rudane]

Re: speech encoding

I think you have to be a little more specific with this question.

If you are talking about the compression and expansion of speechm like in a telephone system, it's companding (from compression and expansion). The North American standard would be u-law and the European standard would be A-law

 

[zanov]

Re: speech encoding

what is the basic phenomenom of speech encoding

try this book to get a basic idea about coding: Speech Coding Algorithms Foundation and Evolution of Standar

 

[cesare]

Re: speech encoding

Basically voice can be sampled, transmitted and reconstructed using an 8bit codec and a sampling frequency of 8Khz. This requires a bandwith of 64 Kbit/sec.

Shortly speech encoding is a way to transmit speech using lower data rate.

Usually speech encoding makes a model of the speech process and extracts the parameters of the model.

At the receiver end the received parameteres are applied to the same model and the speech process is reconstructed

Usually parameters require much less bandwith than the speech process itself.

This is the principle of GSM speech encoding.

 

[Maya]

speech encoding

Such codecs are used to give an efficient digital representation of telephone bandwidth speech. Often the speech is bandlimited to between 200 and 3400 Hz, and is sampled at 8 kHz. An ideal speech codec will represent this speech with as few bits as possible, while producing reconstructed speech which sounds identical, or almost identical, to the uncoded speech. Of course in practice there is always a trade-off between the bit rate of the codec and the quality of its reconstructed speech.

This link may help you:
**broken link removed**