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Digital signal processing appts. and processing method and digital signal reproduction/reception system

A digital signal and signal processing device technology, applied in the direction of digital recording/reproduction, recording information storage, broadcasting information characteristics, etc.

Inactive Publication Date: 2003-12-24
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is possible to hear noise when the playback signal starts and during the transition from the signal playback to the playback stop

Method used

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  • Digital signal processing appts. and processing method and digital signal reproduction/reception system
  • Digital signal processing appts. and processing method and digital signal reproduction/reception system
  • Digital signal processing appts. and processing method and digital signal reproduction/reception system

Examples

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Embodiment Construction

[0050]In the following, an audio system will be described by way of example, which receives 1-bit digital data transmitted from an audio player obtained by delta-sigma modulation through an audio receiver in which the digital signal processing apparatus and method according to the present invention Audio signal, converts 1-bit audio signal to an analog signal, and sends sound waves at the speaker.

[0051] The audio system is an embodiment of the digital signal playback / reception system according to the present invention.

[0052] like figure 1 As shown in, wherein the audio system applying the digital signal playing / receiving system according to the present invention includes: an audio player 10 playing a 1-bit audio signal obtained by delta-sigma modulation; and an audio receiver 30 on a The 1-bit audio signal played by the audio player 10 is received on the transmission line 20 conforming to the IEEE1394 format.

[0053] The audio player 10 starts from a super audio syste...

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Abstract

A digital signal processor receives 1-bit audio signals acquired by sigma modulation and sent over a predetermined transmission line and makes a changeover between the audio signal and a mute pattern includes an IEEE 1394 interface. The IEEE 1394 interface receives an isochronous packet sent over an IEEE 1394-formatted transmission line, extracts music data from the packet, supplies the music data to a DRAM, monitors the amount of data stored in the DRAM, reads a 1-bit digital signal or generates a mute pattern such as a 9-6 pattern, and makes a changeover between the 1-bit digital signal read from the DRAM and mute pattern while fading them. The digital signal processor further includes a D-A converter to convert the 1-bit digital signal supplied from the IEEE 1394 interface into an analog signal.

Description

technical field [0001] The present invention generally relates to a digital signal processing apparatus and method, and more particularly, to a method for receiving a 1-bit audio signal obtained by delta-sigma modulation and transmitted on a predetermined transmission line and performing a 1-bit audio signal to silence A digital signal processing device for conversion of a mute pattern, and a digital signal processing method thereof, and also relates to a digital signal player comprising a digital signal player and a digital signal receiver connected to each other on a predetermined transmission line / receiving system. Background technique [0002] Conventionally, there is widely used a compact disc (CD) in which the sampling frequency fs is about 44.1 kHz, and the PCM method is used to record one sample as 16-bit digital audio data for each channel. There has been proposed a so-called Super Audio Compact Disc (SACD) in which 1-bit audio stream data. [0003] By delta-sig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/00G10L19/02G11B20/10H04H1/00H04H5/00H04H20/88
CPCH04H20/88G11B2020/00065G11B20/10
Inventor 长泽裕史芝健治青木彻也
Owner SONY CORP