Title:
SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2018/198788
Kind Code:
A1
Abstract:
The technology of the present invention relates to a signal processing device, signal processing method and program which enable reproduction by smoothly switching between a DSD signal and a PCM signal. A communication unit acquires a PCM signal and a DSD signal. A PCM up-sampling unit up-samples the PCM signal at a DSD signal sampling frequency. An LPF eliminates the high-frequency component of the DSD signal. A correlation analysis unit analyzes the correlation of the PCM signal after up-sampling to the DSD signal from which the high-frequency component has been removed, and detects a delay amount. A cross-fade unit uses the detected delay amount to adjust the timing of the DSD signal and the PCM signal after up-sampling, and cross-fades the DSD signal and the PCM signal after up-sampling. This technology is applicable to systems that acquire and reproduce audio data, for example.
Inventors:
FUKUI TAKAO (JP)
Application Number:
PCT/JP2018/015351
Publication Date:
November 01, 2018
Filing Date:
April 12, 2018
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04B14/02; G10L19/00; H03M7/32; H04B14/06
Domestic Patent References:
| WO2016199596A1 | 2016-12-15 | |||
| WO2016140071A1 | 2016-09-09 | |||
| WO2016199596A1 | 2016-12-15 |
Foreign References:
| JP2015079218A | 2015-04-23 | |||
| JPH09282800A | 1997-10-31 |
Other References:
See also references of EP 3618312A4
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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