Audio Apparatus Music Gap Detection in Stream Data

Solution Overview

Problem

Conventional audio apparatuses fail to accurately detect music gaps in stream-type data, leading to time lags and erroneous detection due to buffering and decoding processes, resulting in improper sound volume correction and user discomfort.

Innovation Solution

An audio apparatus with an audio signal receiving unit, music gap signal receiving unit, and determining unit that plays back audio signals and determines music gaps based on the time of received music gap signals and silent period duration, ensuring accurate detection even in stream-type data.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If buffering and decoding are performed on stream data, then continuous sound playback is achieved, but time lag occurs causing inaccurate music gap detection

Engineering Contradiction:

Improvecontinuous sound playbackVSAvoidmusic gap detection accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The patent applies preliminary action by buffering stream data in advance to ensure continuous playback, while simultaneously recording the buffering start time and music gap signal reception time. This allows the system to later calculate the actual music gap by compensating for the buffering delay, thus maintaining both continuous playback and accurate gap detection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback by using the recorded buffering start time and music gap signal reception time to calculate the actual music gap duration. The system feeds back this calculated information to correct the detection accuracy, ensuring that the music gap is identified precisely despite the buffering and decoding process.

Inventive Principle:

Principle #23Feedback

2Ease of operation

If stream data is buffered and decoded, then playback continues without pause, but time difference occurs between music gap signal reception and actual sound playback

Engineering Contradiction:

Improvecontinuous playbackVSAvoidtime difference in music gap detection

Core Design Contradiction:

Ease of operationVSLoss of time

Solution Approach 1:

The system performs preliminary buffering of stream data to maintain continuous playback, while simultaneously noting the time when the music gap signal is received. By recording this timing information in advance, the system can later compensate for the time difference caused by buffering and decoding, ensuring accurate music gap detection despite the continuous playback requirement.

Inventive Principle:

Principle #10Preliminary action

3Difficulty of detecting and measuring

If conventional audio apparatus detects music gaps in stream data, then music boundary identification is attempted, but erroneous detection occurs due to buffering and decoding time lags

Engineering Contradiction:

Improvemusic gap detectionVSAvoiddetection accuracy

Core Design Contradiction:

Difficulty of detecting and measuringVSReliability

Solution Approach 1:

The patent applies preliminary action by buffering stream data in advance to ensure continuous playback, while simultaneously recording the buffering start time and music gap signal reception time. This allows the system to later calculate the actual music gap by compensating for the buffering delay, thus maintaining both continuous playback and accurate gap detection.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback by using the recorded buffering start time and music gap signal reception time to calculate the actual music gap duration. The system feeds back this calculated information to correct the detection accuracy, ensuring that the music gap is identified precisely despite the buffering and decoding process.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS8892229B2Audio apparatus

Publication Date: 2014.11.18 FUJITSU TEN LTD

AI summary

An audio apparatus according to an embodiment includes an audio signal receiving unit, a music gap signal receiving unit, a playback unit, and a determining unit. The audio signal receiving unit receives an audio signal in which successive multiple music data are contained in a single block of data. The determining unit determines a boundary of the music data on the basis of the time at which the music gap signal that indicates the boundary of the music data by the music gap signal receiving unit and the duration of a silent period in the audio signal that is played back by the playback unit.