| 发明名称 | Audio processing apparatus, sound pickup apparatus and imaging apparatus | ||
| 摘要 | A sound processing apparatus includes a sound input unit configured to input a sound signal, a signal processor having a band-limiting filter for limiting a passing band of the sound signal, and being configured to apply a predetermined signal processing on a sound signal output from the band-limiting filter, and a controller configured to control a band width of the passing band of the band-limiting filter. The controller changes the band width of the passing band according to a level of the sound signal, and makes a speed at the time of expanding the band width faster than a speed at the time of narrowing the band width. | ||
| 申请公布号 | US8897462(B2) | 申请公布日期 | 2014.11.25 |
| 申请号 | US201113300967 | 申请日期 | 2011.11.21 |
| 申请人 | Panasonic Corporation | 发明人 | Ohtsuka Yoshio |
| 分类号 | H03G5/00;H04N5/77;G10L21/0208;G11B20/10;H04N9/806;H04R3/00;G10L21/0364;H04R3/04 | 主分类号 | H03G5/00 |
| 代理机构 | Panasonic Patent Center | 代理人 | Panasonic Patent Center |
| 主权项 | 1. A sound processing apparatus, comprising: a sound input unit configured to input a sound signal; a signal processor having a band-limiting filter operable to limit a passing band of the sound signal input by the sound input unit, the signal processor being configured to apply a predetermined signal processing on a sound signal output from the band-limiting filter; and a controller configured to control a band width of the passing band of the band-limiting filter, wherein the controller changes the band width of the passing band of the band-limiting filter according to a level of the sound signal input by the sound input unit, makes a speed of changing the band width faster when expanding the band width than when narrowing the band width, and the controller sets the passing band of the band-limiting filter so that as the level of the sound signal is lower, the band width of the passing band is narrower. | ||
| 地址 | Osaka JP | ||