发明名称 |
SCALABLE VOICE ENCODING APPARATUS, SCALABLE VOICE DECODING APPARATUS, SCALABLE VOICE ENCODING METHOD, SCALABLE VOICE DECODING METHOD, COMMUNICATION TERMINAL APPARATUS, AND BASE STATION APPARATUS |
摘要 |
<p>A scalable encoding apparatus, a scalable decoding apparatus and the like are disclosed which can achieve a band scalable LSP encoding that exhibits both a high quantization efficiency and a high performance. In these apparatuses, a narrow band-to-wide band converting part (200) receives and converts a quantized narrow band LSP to a wide band, and then outputs the quantized narrow band LSP as converted (i.e., a converted wide band LSP parameter) to an LSP-to-LPC converting part (800). The LSP-to-LPC converting part (800) converts the quantized narrow band LSP as converted to a linear prediction coefficient and then outputs it to a pre-emphasizing part (801). The pre-emphasizing part (801) calculates and outputs the pre-emphasized linear prediction coefficient to an LPC-to-LSP converting part (802). The LPC-to-LSP converting part (802) converts the pre-emphasized linear prediction coefficient to a pre-emphasized quantized narrow band LSP as wide band converted, and then outputs it to a prediction quantizing part (803).</p> |
申请公布号 |
EP1791116(A1) |
申请公布日期 |
2007.05.30 |
申请号 |
EP20050783539 |
申请日期 |
2005.09.15 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
EHARA, HIROYUKI |
分类号 |
G10L19/12;G10L21/04 |
主分类号 |
G10L19/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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