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    • 3. 发明申请
    • GENERATION OF A SOUND SIGNAL
    • 声音信号的产生
    • WO2004028204A3
    • 2004-07-15
    • PCT/IB0304002
    • 2003-09-16
    • KONINKL PHILIPS ELECTRONICS NVAARTS RONALDUS MIRWAN ROYSCHOBBEN DANIEL W E
    • AARTS RONALDUS MIRWAN ROYSCHOBBEN DANIEL W E
    • H04S1/00H04S5/00
    • H04S1/005H04S1/007H04S5/00H04S2400/01H04S2420/01
    • The present invention relates to a method and a media system of/for generation of at least one output signal (HPL, HPR) from at least one input signal from a second set of sound signals (M) having a related second set of Head Related Transfer Functions. The media system can be a TV, a CD player, a DVD player, a Radio, a display, an amplifier, a headphone or a VCR. Said method includes the steps of determining, for each signal in the second set of sound signals, a weighted relation (14) comprising at least one signal from a third set of intermediate sound signals (CHI1, CHI2) and at least one weight value (Weights); determining a first set of Head Related Transfer Functions (HRTFs) based on the second set of sound signals, the second set of Head Related Transfer Functions and the weighted relation; and transferring at least one signal from the third set of intermediate sound signals by means of at least one HRTF from said first set of Head Related Transfer Functions in order to generate at least one output signal belonging to said first set of sound signals. Hereby, in the end, fewer HRTFs are determined for a subsequent transfer of input signal(s) to output signal(s). Accordingly few convolutions are required.
    • 本发明涉及一种用于从来自第二组声音信号(M)的至少一个输入信号产生至少一个输出信号(HPL,HPR)的方法和媒体系统,该第二组声音信号(M)具有相关的第二组头部相关 传递函数。 媒体系统可以是电视,CD播放器,DVD播放器,收音机,显示器,放大器,耳机或录像机。 所述方法包括以下步骤:对于第二组声音信号中的每个信号,确定加权关系(14),其包括来自第三组中间声音信号(CHI1,CHI2)和至少一个权重值( 权重); 基于第二组声音信号确定第一组头相关传送函数(HRTF),第二组头相关传递函数和加权关系; 以及通过来自所述第一组头相关传递函数的至少一个HRTF从所述第三组中间声音信号传送至少一个信号,以便产生属于所述第一组声音信号的至少一个输出信号。 因此,最终确定用于随后将输入信号传送到输出信号的HRTF较少。 因此,需要很少的卷积。