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    • 31. 发明公开
    • Method and apparatus for speech coding with voiced/unvoiced determination
    • Verfahren und Vorrichtung zur Stimmhaft- / Stimmlos-Entscheidung
    • EP1111586A2
    • 2001-06-27
    • EP00310989.9
    • 2000-12-08
    • NOKIA MOBILE PHONES LTD.
    • Heikkinen, AriPietila, SamuliRuoppila, Vesa, VoiceAge Corporation
    • G10L11/06
    • G10L25/93
    • This invention presents a voicing determination algorithm for classification of a speech signal segment as voiced or unvoiced. The algorithm is based on a normalised autocorrelation where the length of the window is proportional to the pitch period. The speech segment to be classified is further divided into a number of sub-segments, and the normalised autocorrelation is calculated for each sub-segment. If a certain number of the normalised autocorrelation values is above a predetermined threshold, the speech segment is classified as voiced. To improve the performance of the voicing determination algorithm in unvoiced to voiced transients, the normalised autocorrelations of the last sub-segments are emphasised. The performance of the voicing decision algorithm can be enhanced by utilising also the possible lookahead information.
    • 本发明提出了一种用于将语音信号段分类为有声或无声的语音确定算法。 该算法基于归一化的自相关,其中窗口的长度与音调周期成比例。 要分类的语音段被进一步分为多个子段,并且针对每个子段计算归一化的自相关。 如果一定数量的归一化自相关值高于预定阈值,则语音段被分类为浊音。 为了提高无声至浊音瞬态中的发音确定算法的性能,强调了最后一个子段的归一化自相关。 可以通过利用可能的前视信息来增强发声决策算法的性能。
    • 35. 发明公开
    • Slide assembly for a communication unit
    • Schiebevorrichtungfüreine Kommunikationseinheit
    • EP1075125A2
    • 2001-02-07
    • EP00306453.2
    • 2000-07-28
    • NOKIA MOBILE PHONES LTD.
    • Koleda, EugenRonkko, AnttiHiltunen, KariKauhaniemi, Ilpo
    • H04M1/02
    • H04M1/0237
    • A communication unit has a housing part provided with means for entering information, and a slide assembly. The housing part is provided with a set of tracks along which the slide assembly is moveable relative to the housing part. The slide assembly or the housing part includes means for moving the slide assembly along the tracks on the housing part. It could be a wire spring, a motor or a gear provided spring box that moves the slide assembly. The communication unit also has means for decreasing the friction on the sliding surfaces in a communication unit having a slide. These means could be linear bearings positioned between the moving parts or internally lubricated materials used on the sliding surfaces.
    • 通信单元具有设置有用于输入信息的装置的壳体部分和滑动组件。 壳体部分设置有一组轨道,滑动组件可沿该轨迹相对于壳体部分移动。 滑动组件或壳体部分包括用于沿着壳体部分上的轨道移动滑动组件的装置。 它可以是一个线弹簧,一个电动机或一个齿轮提供的弹簧箱,使弹簧组件移动。 通信单元还具有用于降低具有滑块的通信单元中的滑动表面上的摩擦力的装置。 这些装置可以是定位在滑动表面上使用的运动部件或内部润滑材料之间的直线轴承。
    • 36. 发明公开
    • A transmitter and a modulator therefor
    • 发件人Verwendung eines调制器
    • EP1063770A2
    • 2000-12-27
    • EP00305141.4
    • 2000-06-16
    • NOKIA MOBILE PHONES LTD.
    • Furmidge, Simon
    • H03G1/00H03C1/36
    • H03C1/36H03G1/0023
    • A transmitter for a portable radio communication apparatus comprising a modulator having first port for inputting a baseband signal and a second port for inputting a local oscillator signal, and including means for rectifying the input local oscillator signal to provide a conductance waveform at a multiple of the local oscillator signal, and means for mixing the baseband signal with the conductance waveform at said multiple of the local oscillator signal frequency for up-converting the baseband signal to a radio frequency modulated carrier, the transmitter including means for controlling the gain of the modulator thereby to control the output level of the modulator.
    • 一种用于便携式无线电通信装置的发射机,包括具有用于输入基带信号的第一端口和用于输入本地振荡器信号的第二端口的调制器,并且包括用于整流输入本地振荡器信号以提供电导波形的装置, 本地振荡器信号,以及用于将基带信号与所述多个本地振荡器信号频率的电导波形混合以将基带信号上变频到无线电频率调制载波的装置,所述发射机包括用于控制调制器的增益的装置 以控制调制器的输出电平。