1. A method for pyramid vector quantization indexing of audio/video samples, wherein said method comprises the steps of: obtaining an integer input vector; said integer input vector representing said audio/video signal samples; said integer input vector having a number of integer-valued coefficients; extracting a leading sign from said integer input vector; said leading sign being a sign of a terminal non-zero coefficient in said integer input vector; and said terminal non-zero coefficient being one of a first non-zero coefficient and a last non-zero coefficient in said integer input vector; indexing said integer input vector with a pyramid vector quantization enumeration scheme into an output index, which output index together with said leading sign representing said audio/video signal samples; said pyramid vector quantization enumeration scheme neglecting said sign of said terminal non-zero coefficient; and outputting said leading sign as a first codeword and said output index as a second codeword into an outgoing bit stream.