Playlist Preparation Sampling Mechanism for Audio Players
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Users face difficulties in preparing playlists for sound source data players with large song collections, as existing methods are time-consuming and inefficient, especially when dealing with hundreds of songs, and proposed solutions like voice recognition or humming require additional devices or complex signal processing.
Innovation Solution
A sound source data player with a key input unit, memory unit, timer, and control unit that allows users to set a sampling position and time within a sound source data file, enabling easy playlist creation by playing back selected segments and adding their information to the playlist.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the storage capacity of the player is increased to store several hundred songs, then the user can store more music, but it becomes impossible for the user to prepare a playlist by memorizing melodies and requires checking each song through playback, consuming significant time
Solution Approach 1:
The system automatically detects and extracts the melody of each stored song in advance, creating a digital melody fingerprint before the user needs to create a playlist. This preliminary action eliminates the need for users to manually check each song by playback, allowing rapid playlist creation even with hundreds of songs stored.
2Ease of operation
If voice recognition devices are used to enable users to search sound source data by voice command, then playlist preparation may be facilitated, but additional expense is required and precise detection of desired sound source data is not guaranteed
Solution Approach 1:
The system replaces complex voice recognition technology with a simpler melody-based search mechanism. Users only need to hum or whistle a simple melody, which is converted to digital signal and compared against stored song melodies. This substitution achieves reliable song identification without requiring expensive voice recognition hardware or complex signal processing.
3Ease of operation
If humming-based melody search is implemented, then users can search by humming, but additional devices like A/D converter are required and complex signal processing is needed to compare with stored songs
Solution Approach 1:
The system extracts only the essential melodic contour from user humming, ignoring timbre, pitch accuracy, and other complex acoustic features. By focusing solely on the sequence of relative pitch intervals, the system dramatically simplifies the signal processing requirements while maintaining accurate song identification capability.
Data Source
AI summary
An apparatus and method for preparing a playlist in a sound source data player are provided. For the preparation of the playlist, the position of a sampling of the sound source data is set by user's arbitrary selection or by searching out the thematic part of the sound source data. Then, if the sampling time taken for playing back the sampling has been set, the player plays back the sound source data file selected by moving a cursor from the position of the sampling. Finally, the user adds the individual information of the presently selected sound source data to the playlist. Thus, the user may quickly and readily sample a large number of songs stored in the player and thus more easily prepare the playlist.