-
1.发明授权Laser vision disc with digital sound (LDD) disc player for reproducing analog audio signals mixed with digital audio signals 失效具有数字声音（LDD）光盘播放器的激光视盘，用于再现与数字音频信号混合的模拟音频信号
公开(公告)号：US5257253A
公开(公告)日：1993-10-26
申请号：US994077
申请日：1992-12-17
申请人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari , Tetsuo Shimizu
发明人： Hiroshi Otsubo , Seiji Ohmori , Tasuku Tsuruga , Eisaku Kawano , Takeshi Mawatari , Tetsuo Shimizu
摘要： A first reproduction circuit reproduces a digital stereo audio signal from a signal which is read by means of a pickup from a disc loaded at a playback position, and a second reproduction circuit reproduces an analog audio signal from the signal read by the pickup. When the disc loaded at the playback position is identified as being a Laser vision Disc with Digital sound (LDD) disc, the stereo audio signal outputted from the first reproduction circuit is mixed with the analog audio signal outputted from the second reproduction circuit, such that a vocal portion of a reproduction can be reproduced together with an accompaniment portion of the reproduction, in a stereo mode.
摘要翻译： 第一再现电路根据从重放位置装入的盘的拾取器读取的信号再现数字立体声音频信号，第二再现电路根据由拾取器读取的信号再现模拟音频信号。 当在播放位置加载的光盘被识别为具有数字声音（LDD）光盘的激光视盘时，从第一再现电路输出的立体声音频信号与从第二再现电路输出的模拟音频信号混合，使得 可以以立体声模式再现与再现的伴奏部分一起再现的声音部分。
-
2.发明授权Disc player for playing different types of discs which automatically identifies the type of a currently loaded disc 失效用于播放不同类型的磁盘的DISC播放器，其自动识别当前装载的盘的类型
公开(公告)号：US5177728A
公开(公告)日：1993-01-05
申请号：US481260
申请日：1990-02-20
CPC分类号： G11B19/12 , G11B27/105 , G11B27/36 , G11B2220/20 , G11B2220/2545 , G11B2220/2583
摘要： A disc player capable of playing discs of different types such as: discs where only a digital audio signal is contained in a first frequency band; discs where only an analog audio signal is contained in a frequency band other than the first frequency band; and, discs where digital and audio signals are contained in the first frequency band and the other frequency band. Processing arrangements are further included to determine (according to disc size and/or presence of a table of contents) whether a currently loaded disc is recorded in the same format as a previous disc which was loaded immediately prior thereto, and if the same, playing the currently loaded disc according to the same reproduction settings as those for the previous disc.
-
3.发明授权Reproducing apparatus including means for gradually varying a mixing ratio of first and second channel signal in accordance with a voice signal 失效再现装置包括根据语音信号逐渐改变第一和第二声道信号的混合比的装置
公开(公告)号：US5033036A
公开(公告)日：1991-07-16
申请号：US469653
申请日：1990-01-23
摘要： A reproducing apparatus mixes the voice information from a microphone and the information reproduced from a recording medium in which a vocal signal plus an instrumental signal is contained as a first signal in a first channel and only an instrumental signal is contained as a second signal in a second channel. A first mixing circuit mixes the first signal and the second signal. The output of the first mixing circuit is mixed by a second mixing circuit with the voice information from the microphone. A control circuit or audio detecting circuit provides a control signal in accordance with the level of the voice information from the microphone. The control signal controls a selection control circuit to gradually and smoothly vary the mixing ratio of the first signal and the second signal when mixing these two signals.
摘要翻译： 再现装置将来自麦克风的语音信息和从其中包含声音信号加上乐器信号的记录介质再现的信息混合在第一声道中作为第一信号，并且仅将仪器信号作为第二信号包含在 第二频道 第一混合电路混合第一信号和第二信号。 第一混合电路的输出由第二混频电路与麦克风的语音信息混合。 控制电路或音频检测电路根据麦克风的语音信息的电平提供控制信号。 控制信号控制选择控制电路，以便在混合这两个信号时逐渐平稳地改变第一信号和第二信号的混合比。
-
-
搜索结果
3 条记录 (耗时 0.027 秒)
