发明授权
- 专利标题: Audio ramping technique for a radio
- 专利标题(中): 用于收音机的音频斜坡技术
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申请号: US522200申请日: 1995-08-31
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公开(公告)号: US5749056A公开(公告)日: 1998-05-05
- 发明人: Audley F. Patterson , Hector E. Suarez , Craig P. Wadin
- 申请人: Audley F. Patterson , Hector E. Suarez , Craig P. Wadin
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: H03G3/20
- IPC分类号: H03G3/20 ; H04M1/60 ; H04B1/16
摘要:
An audio ramping technique (200) reduces acoustic shock in radio (100) that has multiple operating modes each having a different nominal audio speaker level. The ramping technique (200) sets the audio speaker level to the same initial sound pressure level (SPL) (208) regardless of the mode of radio operation and then ramps the audio level (216) until either a user initiated control signal (212) is received or the audio level reaches a maximum threshold level (210).
公开/授权文献
- US5095895A Negative pressure erection apparatus 公开/授权日:1992-03-17
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