Method, apparatus, and system for reducing memory requirements for echo cancellers

A method comprising:

• receiving a first array of coefficients each being represented by a first number of bits which includes a first portion representing the sign of the respective coefficient and a second portion representing the magnitude of the respective coefficient;
• and
• performing compression operations on the first array of coefficients to obtain a second array of coefficients which requires less memory storage than the first set of coefficients, wherein coefficients in the first array which have higher values relative to other coefficients in the first array are given higher priority for being encoded in the second array.

An apparatus comprising:

• logic to generate a first set of coefficients, each coefficient being represented by a first number of bits, the first number of bits including a first portion representing the sign of the respective coefficient and a second portion representing the magnitude of the respective coefficient;
• and
• logic to compress the first set of coefficients to generate a second set of coefficients which requires less memory storage than the first set of coefficients, wherein coefficients which have higher values are encoded before coefficients which have lower values until a predetermined compression ratio is satisfied or until all coefficients in the first set have been encoded.

An echo canceller comprising:

• logic to receive a first array of coefficients each being represented by a first number of bits which includes a first portion representing the sign of the respective coefficient and a second portion representing the magnitude of the respective coefficient;
• and
• logic to perform compression operations on the first array of coefficients to obtain a second array of coefficients which requires less memory storage than the first set of coefficients, wherein coefficients in the first array which have higher values relative to other coefficients in the first array are given higher priority for being encoded in the second array.

A machine-readable medium comprising instructions which, when executed by a machine, cause the machine to perform operations including:

• generating a first set of coefficients to be used for performing echo cancellation in a voice-over-packet (VoP) system, each coefficient being represented by a first number of bits, the first number of bits including a first portion representing the sign of the respective coefficient and a second portion representing the magnitude of the respective coefficient;
• and
• compressing the first set of coefficients to generate a second set of coefficients which requires less memory storage than the first set of coefficients, wherein coefficients which have higher values are encoded before coefficients which have lower values until a predetermined compression ratio is satisfied or until all coefficients in the first set have been encoded.