-
公开(公告)号：US5896576A
公开(公告)日：1999-04-20
申请号：US568049
申请日：1995-12-06
摘要： A signal indicating the quality of the received digital data in an ADPCM cordless telephone system is monitored and a transition from good to poor quality is detected. In response to this detection, a first attenuation level is applied to the received signal, the level being selected to maintain the intelligibility of the signal to the user while lowering the volume thereof. The first attenuation level is then reduced such that reduced attenuation is maintained over a time interval selected to accommodate for the known error propagation time of the ADPCM signal. An optional clipping circuit may be employed to limit the excursion of the output audio signal.
摘要翻译： 监视指示ADPCM无绳电话系统中接收的数字数据的质量的信号，并且检测到从良好到劣质的转换。 响应于该检测，对接收信号施加第一衰减电平，该电平被选择以在降低其体积的同时维持信号的清晰度。 然后减小第一衰减水平，使得在选择以适应ADPCM信号的已知误差传播时间的时间间隔上保持减小的衰减。 可以采用可选的限幅电路来限制输出音频信号的偏移。
-
公开(公告)号：US5586284A
公开(公告)日：1996-12-17
申请号：US547050
申请日：1995-10-23
CPC分类号： G06F9/355
摘要： The STREAMER FOR RISC DIGITAL SIGNAL PROCESSOR shown herein allows a CPU 46 to interface with a memory 60 via data registers 50. Pre-fetch and post-store of the correct address is determined by an address generator 58 according to a rule determined by a context register 52. An index indicative of this address is stored in an index register 54. The data, context, and index registers together form a streamer 56, streaming data between the CPU 46 and data memory 60. The rule of the context register 52 also drives a converter 62 for converting data between memory format and register format. The speed and flexibility of a RISC device is combined with the intensive memory access of a digital signal processor.
摘要翻译： 本文所示的用于RISC数字信号处理器的流程允许CPU 46经由数据寄存器50与存储器60接口。正确地址的预取和后存储由地址生成器58根据由上下文确定的规则来确定 指示该地址的索引被存储在索引寄存器54中。数据，上下文和索引寄存器一起形成流分送器56，在CPU 46和数据存储器60之间流传输数据。上下文寄存器52的规则也 驱动用于在存储器格式和寄存器格式之间转换数据的转换器62。 RISC设备的速度和灵活性与数字信号处理器的密集存储器访问相结合。
-
公开(公告)号：US4430644A
公开(公告)日：1984-02-07
申请号：US317038
申请日：1981-11-02
CPC分类号： B41J5/08
摘要： A simplified, symmetrical encoding apparatus of the acoustic rod type with polarized output signals, e.g., where key-actuated strikers impact an acoustic bar having a number of differently-shaped tabs on the bar, the impact giving rise to divergent acoustic waves sensed by a transducer at each end of the bar. Providing paired sets of a non-polarizing tab and oppositely-oriented raked (polarizing) tabs in mirror image form at desired locations on right and left halves of the bar, preferably with a first tab located at the bar's midpoint, facilitates distinguishing between impacts on the different tabs.
摘要翻译： 具有偏振输出信号的声杆型的简化对称编码装置，例如，其中键致动的撞击杆撞击在杆上具有多个不同形状的突片的声杆，该冲击产生由一个 换能器在酒吧的每一端。 提供成对的一组非偏振片和反射镜（棱镜）的镜片形式的倾斜（偏光）片，形成在条的右半部和左半部分的所需位置，优选地具有位于条的中点处的第一突片，有助于区分对 不同的标签。
-
-
搜索结果
13 条记录 (耗时 0.014 秒)
