发明名称 |
Encoder, decoder and methods for encoding and decoding data segments representing a time-domain data stream |
摘要 |
An apparatus for decoding data segments representing a time-domain data stream, a data segment being encoded in the time domain or in the frequency domain, a data segment being encoded in the frequency domain having successive blocks of data representing successive and overlapping blocks of time-domain data samples. The apparatus includes a time-domain decoder for decoding a data segment being encoded in the time domain and a processor for processing the data segment being encoded in the frequency domain and output data of the time-domain decoder to obtain overlapping time-domain data blocks. The apparatus further includes an overlap/add-combiner for combining the overlapping time-domain data blocks to obtain a decoded data segment of the time-domain data stream. |
申请公布号 |
US8812305(B2) |
申请公布日期 |
2014.08.19 |
申请号 |
US201313924441 |
申请日期 |
2013.06.21 |
申请人 |
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V. |
发明人 |
Geiger Ralf;Neuendorf Max;Yokotani Yoshikazu;Rettelbach Nikolaus;Herre Juergen;Geyersberger Stefan |
分类号 |
G10L21/00;G10L19/00 |
主分类号 |
G10L21/00 |
代理机构 |
Perkins Coie LLP |
代理人 |
Glenn Michael A.;Perkins Coie LLP |
主权项 |
1. An apparatus adapted for generating an encoded data stream based on a time-domain data stream, the time-domain data stream comprising samples of a signal, the apparatus comprising
a segment processor adapted for providing data segments from the data stream, two consecutive data segments comprising a first or a second overlapping region, the second overlapping region being smaller than the first overlapping region; a time-domain encoder adapted for encoding a windowed data segment in the time domain; a frequency-domain encoder adapted for applying weights to samples of the time-domain data stream according to a first or second windowing function to acquire a windowed data segment, the first and second windowing functions being adapted to the first and second overlapping regions, the frequency-domain encoder being adapted for encoding a windowed data segment in the frequency domain; a time-domain data analyzer adapted for determining a transition indication associated with a data segment; and a controller adapted for controlling the apparatus such that for data segments to which a first transition indication is associated, output data of the time-domain encoder is comprised by the encoded data stream and for data segments to which a second transition indication is associated, output data of the frequency-domain encoder is comprised by the encoded data stream. |
地址 |
Munich DE |