Patent ID: 8352258
Filing Date: 2013-01-08
Classification: G10L

Abstract:
1. An encoding apparatus, comprising: a transformer that transforms an input signal to a frequency domain to obtain a frequency domain parameter; a selector that selects a quantization target band from among a plurality of subbands obtained by dividing the frequency domain, and generates band information indicating the quantization target band; a shape quantizer that quantizes a shape of the frequency domain parameter in the quantization target band; a gain quantizer that encodes a gain of a frequency domain parameter in the quantization target band to obtain gain encoded information; and a determiner that determines whether predictive encoding is to be performed based on a number of subbands common to the quantization target band and a quantization target band selected in a past, wherein the gain quantizer encodes the gain of the frequency domain parameter in accordance with a determination result of the determiner.