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1. (WO2018198788) SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM

Pub. No.:    WO/2018/198788    International Application No.:    PCT/JP2018/015351
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 13 01:59:59 CEST 2018
IPC: H04B 14/02
G10L 19/00
H03M 7/32
H04B 14/06
Applicants: SONY CORPORATION
ソニー株式会社
Inventors: FUKUI Takao
福井 隆郎
Title: SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING METHOD AND PROGRAM
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.