Mobile Terminal Ring Tone Enhancement via Offline MIDI Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Low-end and mid-end mobile terminals lack sufficient processing power to generate high polyphony ring tones and message alert tones in real-time using existing MIDI technology, limiting sound quality.
Innovation Solution
Converting high-polyphony MIDI files to compressed sample files using Truetone technology, allowing a Truetone player to produce sounds with higher polyphony in real-time, while protecting copyrights through file locking, and utilizing existing Truetone components in mobile terminals to enhance sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If MIDI technology is used to generate ring tones in real-time, then processing power requirements increase with polyphony quality, but low-end and mid-end mobile terminals have insufficient processing power
Solution Approach 1:
The patent pre-generates high-polyphony MIDI files offline before deployment to mobile terminals. By performing the computationally intensive polyphony generation in advance on more powerful systems, the patent eliminates the need for low-end devices to perform real-time high-polyphony synthesis, thus resolving the contradiction between sound quality and processing power requirements.
Solution Approach 2:
The patent creates simplified versions of high-polyphony MIDI files that can be played back on low-end devices with limited processing power. These copied/derived files maintain the essential musical characteristics while reducing the computational burden, allowing quality sound reproduction without requiring high processing power in the mobile terminal.
2Manufacturing precision
If high polyphony MIDI files are used, then sound quality improves, but real-time playback on low-end devices becomes impossible
Solution Approach 1:
The patent performs offline preprocessing of high-polyphony MIDI files to create optimized versions suitable for real-time playback on resource-constrained devices. This preliminary action separates the computationally intensive generation phase from the real-time playback phase, enabling both high sound quality and real-time performance.
Solution Approach 2:
The patent transforms high-polyphony MIDI files into modified formats with adjusted parameters that reduce computational complexity while preserving audio quality. By changing parameters such as polyphony reduction, sample rate optimization, and format conversion, the patent enables real-time playback on low-end devices without sacrificing perceived sound quality.
3Quantity of substance
If Truetone technology is used for ring tones, then file sizes become small for air delivery, but Truetone is only complementary to MIDI and cannot provide high polyphony
Solution Approach 1:
The patent merges the advantages of both MIDI and Truetone technologies by converting high-polyphony MIDI files into optimized audio formats that retain polyphonic characteristics. This combination allows the system to deliver small file sizes suitable for air transmission while maintaining high polyphony capabilities that Truetone alone cannot provide.
Solution Approach 2:
The patent creates a composite audio format that integrates the structural advantages of MIDI (polyphony, scalability) with the efficiency advantages of compressed audio formats (small file size, fast delivery). This composite approach enables both high polyphony and compact file sizes, resolving the contradiction between the two technologies.
Data Source
AI summary
A method and device for producing ring tones in high polyphony in real-time in a network component such as a mobile terminal or a server of a service provider. The network component has one or more ring tones in MIDI files of high polyphony, and a MIDI player of lower polyphony for producing sounds from the scaled down version of the MIDI files in real-time. In order to produce sounds indicative of the high-polyphony ring tones in real-time, the high-polyphony MIDI files are converted to compressed files in a non real-time manner. The converted files are stored in a storage so as to allow a compressed file player (such as Truetone, MP3, wav, AAC, RealAudio, Vorbis) to produce sounds from the converted files. A file lock is provided to the converted files so that they cannot be forwarded, thereby protecting the copyrights of the ring tone composer.