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Method of MIDI file reproduction and mobile terminal

A mobile terminal, file technology, applied in the direction of electroacoustic musical instruments, instruments, etc., can solve the problem of loud sound reproduction fidelity, reduction and other problems

Inactive Publication Date: 2011-04-13
SONY ERICSSON MOBILE COMM AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The result is a reduction in the fidelity of sound reproduction due to the generation of audibly loud and annoying artefacts

Method used

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  • Method of MIDI file reproduction and mobile terminal
  • Method of MIDI file reproduction and mobile terminal
  • Method of MIDI file reproduction and mobile terminal

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Embodiment Construction

[0024] MIDI files include the commands necessary to reproduce a specific piece of music or sound. The information stored in the file does not directly represent audio data, but rather the programming instructions that enable a MIDI synthesizer to generate individual sounds. The data format of MIDI files has been standardized by the MIDI Manufacturers Association (MMA), to which many of the most important manufacturers of digital musical instruments belong. This standard defines the format of the so-called MIDI protocol, in which each command consists of a so-called MIDI word. A MIDI word regularly consists of 3 bytes, the first of which is a status byte with information about what kind of message the MIDI word represents. The status byte is followed by two data bytes with information about the content of the message. In fact, the status byte carries two pieces of information. Correspondingly, the first four bits indicate the message type, and the second four bits indicate t...

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Abstract

A method for adapting a score stored in a MIDI file for being reproduced on a mobile terminal to the transfer function of an electroacoustic reproduction circuitry is provided. Hereby, a test rendering of the score for to obtain sampled data is performed prior to a reproduction of the score on the mobile terminal. From these sampled data, one or more values and or combination of values important for a desired electroacoustic reproduction on the mobile terminals are identified, and based on these identified values, one or more parameters suited for adapting the score with respect to the desired or optimised reproduction on the mobile terminal are determined.

Description

technical field [0001] The invention relates to a mobile terminal suitable for reproducing sound or music files, in particular MIDI (Musical Instrument Digital Interface) data files, respectively. Background technique [0002] MIDI is a data format that does not contain sampled audio data like a ".wav" file, for example, but a specification on how sound is rendered. A MIDI file can be thought of as a musical score in Electronic Readable format. It contains information about the track and the equipment used as well as the acoustic parameters that must be taken into account when reproducing the score represented by the data stored in the respective MIDI file. The collective term acoustic parameter denotes a statement defining eg pitch, note or rest value, loudness level, tempus, timbre, or special effects like tremolo or reverb, respectively. [0003] In order to convert a MIDI file to sound, it is necessary to translate the information present in the MIDI file and form data...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10H1/00G10H1/46
CPCG10H2240/251G10H2250/645G10H1/0066G10H2230/021G10H7/00G10H1/46G10H1/00
Inventor T·勒希纳
Owner SONY ERICSSON MOBILE COMM AB
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