发明名称 |
Audio encoding device and audio encoding method |
摘要 |
An audio encoding device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute: detecting a plurality of lobes based on a frequency signal constituting an audio signal; calculating a masking threshold value of the frequency signal; allocating an amount of bits per unit frequency region to be allocated for encoding of the frequency signal on a basis of the masking threshold value; selecting a main lobe on a basis of bandwidth and power of the lobes; and controlling the encoding by reducing the amount of bits in a first region including a maximum value of the power in the main lobe. |
申请公布号 |
US9620135(B2) |
申请公布日期 |
2017.04.11 |
申请号 |
US201514836355 |
申请日期 |
2015.08.26 |
申请人 |
FUJITSU LIMITED |
发明人 |
Kishi Yohei;Kamano Akira;Otani Takeshi |
分类号 |
G10L19/00;G10L19/032 |
主分类号 |
G10L19/00 |
代理机构 |
Staas & Halsey LLP |
代理人 |
Staas & Halsey LLP |
主权项 |
1. An audio encoding device comprising:
a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute:
detecting a plurality of lobes based on a frequency signal constituting an audio signal;calculating a masking threshold value of the frequency signal;allocating an amount of bits per unit frequency region to be allocated for encoding of the frequency signal on a basis of the masking threshold value;selecting a main lobe on a basis of bandwidth and power of the lobes; andcontrolling the encoding by reducing the amount of bits in a first region including a maximum value of the power in the main lobe. |
地址 |
Kawasaki JP |