公开(公告)号：EP3761672A1

公开(公告)日：2021-01-06

申请号：EP20183399.3

申请日：2020-07-01

申请人： Dolby International AB

发明人： STAHLMANN, Alexander ,  BOEHM, Reinhold ,  LEDDY, Mark ,  LINZMEIER, Karsten ,  MATHEW, Vinay ,  PLAIN, Simon ,  PURNHAGEN, Heiko ,  SEHLSTROM, Leif ,  THESING, Robin

IPC分类号： H04S20060101

摘要： A method comprising: receiving and decoding a coded bitstream encoded with audio content including first audio objects corresponding to a first media content type of two consecutive media content types and second audio objects corresponding to a second media content type of the two consecutive media content types, and audio metadata corresponding to the audio content, the audio metadata including first and second audio object gains, respectively for the first and second audio objects, generated at least in part based on a first fading curve of the first media content type and a second fading curve of the second media content type, respectively; applying the first and second audio object gains to the first and second audio objects, respectively; rendering a sound field represented by the first audio object with the applied first audio object gain and the second audio object with the applied second audio object gain.

公开(公告)号：EP1120013A4

公开(公告)日：2005-03-02

申请号：EP99948311

申请日：1999-09-17

申请人： ATMEL CORP

发明人： AZEREDO LEME CARLOS ,  DUPUY CHRISTIAN ,  DA FRANCA JOSE EPIFANIO

IPC分类号： G11B31/00 ,  H03M20060101 ,  H03M3/00 ,  H03M3/02 ,  H04S20060101 ,  H04S1/00 ,  H04S3/00 ,  H04S7/00

CPC分类号： H04H60/04

摘要： An integrated, multi-input audio mixer (80) receiving a plurality of analog input signals (Ain-1AinN), internally digitizing the analog input signals, digitally processing and mixing the digitized input signals and producing both digital and analog representations of the mixed inputs. All analog inputs (Ain1-AinN) are applied to half of a full delta-sigma analog-to-digital converter. That is, each input is applied to a respective delta-sigma modulator, but all the delta-sigma modulators share a single decimation filter (89). The output of each delta-sigma modulator controls a respective multiplexer (Mx_1-Mx_N) having a separate input channel for each quantization level of its respective delta-sigma modulator. The output of the multiplexers is selectively applied to a summing circuit (85). The output from the summing circuit (85) is applied to a D/A converter (87) to provide an analog output, and is also applied to the single sigma-decimation filter (89), which recovers the mixed data from the delta-sigma modulators.