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264 条记录 (耗时 0.014 秒)

    AUDIO PROCESSING DEVICE AND AUDIO PROCESSING METHOD
    55.
    发明公开
    AUDIO PROCESSING DEVICE AND AUDIO PROCESSING METHOD 有权
    声音处理装置和声音处理方法

    公开(公告)号：EP2299368A4

    公开(公告)日：2012-12-12

    申请号：EP09738885

    申请日：2009-05-01

    申请人： JAPAN SCIENCE & TECH AGENCY

    发明人： TORAICHI KAZUO ,  HIGUCHI MASAKAZU ,  MOROOKA YASUO ,  NAKAMURA MITSUAKI

    IPC分类号： G06F17/17 ,  G10L19/00 ,  G10L19/04 ,  G10L21/04 ,  H03H17/00 ,  H03H17/02 ,  H04R3/04

    CPC分类号： G10L19/04 ,  B60D1/58 ,  G06F17/17 ,  H03H17/0294 ,  H04S3/002

    摘要： There is provided a sound processing apparatus and a sound processing method which are capable of reproducing discrete data with a high-quality sound matching users' preferences. In a sound processing means 2, since an interpolation value reflecting a value of a variable parameter ± by which the value of a control sampling function c 0 (t) is multiplied can be calculated, an analog signal obtained through the interpolation performed in a sampling function S N (t) can be regulated in accordance with the variable parameter ± by changing the value of the variable parameter ±. In this way, by allowing the user to appropriately change the variable parameter ± in accordance with various conditions including music reproduction environments, sound sources, musical tones and so on, it becomes possible to reproduce high-quality-sound music in which its frequency characteristics of the analog signal have changed and a high quality desired by the user is obtained.

    DATA CONVERSION DEVICE, PROGRAM AND METHOD
    57.
    发明公开
    DATA CONVERSION DEVICE, PROGRAM AND METHOD 审中-公开
    DATENUMWANDLUNGSVORRICHTUNG，-PROGRAMM UNDERVERHREN

    公开(公告)号：EP2244260A1

    公开(公告)日：2010-10-27

    申请号：EP09712740.1

    申请日：2009-02-20

    申请人： Kabushiki Kaisha Kenwood

    发明人： NAKAMURA, Masami

    IPC分类号： G11B20/10 ,  G10L19/00 ,  H03H17/00

    CPC分类号： G11B20/10 ,  G11B20/10037 ,  G11B2020/00057 ,  G11B2020/10546 ,  G11B2220/2545 ,  H03M1/207

    摘要： A data conversion device is provided with a data converting means that sequentially converts first data into second data of the number of second bits, wherein an analog signal is quantized into the first data by the number of first bits, and the first and second data can be first and second maximum values, respectively. The data converting means is comprised of a first conversion means (steps 21 and 23) that, when a value of the fast data is not the first maximum value, converts the first data to the second data by adding 0 to a lower bit side of the first data and a second conversion means (steps 21 and 24-26) that converts the first data to the second data so that, when a value of the first data is the fast maximum value, a value can be made larger, in accordance with a value be-fore or after the first data, than the data of the number of second bits obtained by adding 0 to the lower bit side of the first data. With the structure, when the data obtained by quantizing an analog signal is converted to data with the number of more bits, a rounding error by quantizing is improved as much as possible.

    摘要翻译： 数据转换装置具有数据转换装置，该数据转换装置将第一数据顺序地转换成第二位数的第二数据，其中模拟信号通过第一位的数量被量化为第一数据，第一和第二数据可以 分别为第一和第二最大值。 数据转换装置包括第一转换装置（步骤21和23），当快速数据的值不是第一最大值时，通过将第一数据添加到第二数据的下位 第一数据和第二转换装置（步骤21和24-26），其将第一数据转换为第二数据，使得当第一数据的值是快速最大值时，可以根据 比第一数据之前或之后的值比通过将0加到第一数据的低位侧获得的第二位数的数据。 利用该结构，当通过量化模拟信号获得的数据被转换成具有更多位数的数据时，尽可能地改进通过量化的舍入误差。

    A RECONFIGURABLE FIR FILTER USING CSD COEFFICIENT REPRESENTATION
    58.
    发明授权
    A RECONFIGURABLE FIR FILTER USING CSD COEFFICIENT REPRESENTATION 有权
    与系数呈现CSD可重构FIR滤波器

    公开(公告)号：EP1186099B1

    公开(公告)日：2009-06-10

    申请号：EP00993360.7

    申请日：2000-11-30

    申请人： Koninklijke Philips Electronics N.V.

    发明人： WITTIG, Karl

    IPC分类号： H03H17/00

    CPC分类号： H03H17/0294 ,  H03H17/0225 ,  H03H17/06

    摘要： The present invention is directed to a reconfigurable finite impulse response (FIR) filter that processes data tap values with canonical sign digit (CSD) coefficients. The FIR filter according to the present invention includes a shift group associated with at least one of the data tap values and at least one of the CSD coefficients. Each shift group includes a plurality of parallel paths. Each parallel path shifts the data tap value according to a bit pair of the coefficient to produce a weighted product. An adder is also included that combines the weighted products from each of the shift groups.

    A WIRELESS RECEIVER CIRCUIT WITH MERGED ADC AND FILTER
    59.
    发明公开
    A WIRELESS RECEIVER CIRCUIT WITH MERGED ADC AND FILTER 有权
    与凝聚的ADC和过滤无线接收器电路

    公开(公告)号：EP1994640A4

    公开(公告)日：2009-03-04

    申请号：EP06840438

    申请日：2006-12-11

    申请人： SIRIFIC WIRELESS CORP

    发明人： HOLDEN ALAN R

    IPC分类号： H03M1/12 ,  H03H17/00 ,  H03M1/18 ,  H03M3/02 ,  H04B1/16

    CPC分类号： H04B1/30 ,  H04B1/0028 ,  H04B1/0032

    摘要： A CMOS hybrid analog-digital receiver core where filtering and gain functions are implemented in the digital domain. The analog portion of the receiver core includes standard circuits such as a low noise amplifier for receiving an RF input signal, and a mixer circuit for down-converting the RF input signal to a base band frequency signal. The analog to digital conversion function is provided by a merged ADC filter circuit having a low order filter stage and an ADC stage. The low order filter stage performs low order filtering of the base band signal to reduce dynamic range and clock requirements for subsequent analog to digital conversion the ADC stage. The two circuit stages are considered to be merged since they both consist of an interconnection of identical transconductance cells, where each transconductance cell includes a series of interconnected CMOS inverters.

    LOW COMPLEXITY SUBBAND-DOMAIN FILTERING IN THE CASE OF CASCADED FILTER BANKS
    60.
    发明公开
    LOW COMPLEXITY SUBBAND-DOMAIN FILTERING IN THE CASE OF CASCADED FILTER BANKS 审中-公开
    SUBBANDDOMÄNENFILTERUNG低复杂CASE级联滤波器组

    公开(公告)号：EP2005422A2

    公开(公告)日：2008-12-24

    申请号：EP07734099.0

    申请日：2007-03-27

    申请人： Nokia Corporation

    发明人： TAMMI, Mikko

    IPC分类号： G10L19/02 ,  G10L19/14 ,  H03H17/00

    CPC分类号： G10L19/0204

    摘要： A filtering method and system for a subband-domain is provided. A first analysis filter bank is configured to divide an input signal into a plurality of subbands. A second analysis filter bank divides one or more of the subbands into a second set of subbands. A modification unit accepts the plurality of subbands, the second set of subbands and modification data and outputs a plurality of modified frequency subbands. A first synthesis filter bank synthesizes the plurality of modified subbands. A filter then filters the plurality of modified subbands and the one or more synthesized modified subbands to obtain a plurality of filtered subbands. A second synthesis filter bank synthesizes the plurality of filtered subbands to obtain an output signal.