CN1306435C - A MIDI music file - Google Patents
A MIDI music file Download PDFInfo
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- CN1306435C CN1306435C CNB2003101168209A CN200310116820A CN1306435C CN 1306435 C CN1306435 C CN 1306435C CN B2003101168209 A CNB2003101168209 A CN B2003101168209A CN 200310116820 A CN200310116820 A CN 200310116820A CN 1306435 C CN1306435 C CN 1306435C
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- music file
- midi music
- file
- wave table
- wavetable
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- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims description 8
- 241001269238 Data Species 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 abstract description 11
- 238000003786 synthesis reaction Methods 0.000 abstract description 11
- 239000003086 colorant Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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Abstract
The present invention relates to an MIDI music file, particularly to disclose the MIDI music file. The MIDI music file of the present invention comprises a file header part, a music book data area part and a wave table data area, wherein the file header part comprises description parameters for the file; the music book data area part records real music information, and one music file comprises a plurality of music book data areas; sampling data information is stored in the wave table data area. When a synthetic musical notation required by a user is not in a main wave table base of a wave table synthesis system, wave table data is not firstly loaded in an expansion wave table base externally, and the data adopted by the wave table is sent when the MIDI music file is sent. A process of inputting wave table sampling data externally is simplified by referring to the MIDI music file of the present invention, which is convenient and quick.
Description
Technical field
The present invention relates to a kind of disposal route of music file, specifically, relate to a kind of using method of MIDI music file.
Background technology
Mobile phone is nowadays to develop a very fast field, people can not satisfy mobile phone as just a common communicator, wish that mobile phone can be a hand-hold multimedia platform completely, such as aspect the tinkle of bells, finished of the transition of single the tinkle of bells to many chord rings, now just progressively from the FM synthesis mode to the transition of wave table synthesis mode.Because the processing speed of present mobile phone CPU is also very slow, can't realize the algorithm that wave table is synthetic with software, so can the intension wave table synthetic, number is touched conversion and just become desirable selection with the chip of amplification module.Owing to be applied on the mobile phone, so this type of chip cost and volume have been subjected to strict restriction, this has just caused the wavetable base of chip internal can not do very greatly, can only amplify the sampling of several emphasis tone colors of standard MIDI defined, if put into all 128 kinds of tone colors and 47 kinds of percussion music of standard MIDI regulation, the sampling of each tone color will be very little so, can have a strong impact on synthetic effect like this.
And because the restriction of wavetable base size, chip can only selectively be supported in the tone color of standard MIDI defined, just can not support for the national musical instruments as urheen, Zheng.The so outstanding allusion quotation music score song of our country just can't represent like this, and this can't but be a kind of sorry.
In fact, same problem also is present in other the synthetic field of wave table, and it is particularly outstanding only to seem on handheld devices such as mobile phone.
Like this, a kind of wave table synthesis system of expanding tone color has just appearred, the expanding wavetable base unit has been Duoed than traditional wave table synthesis system in this system, the expanding wavetable base unit is effective replenishing to main wavetable base unit, the wave table of tone color relatively more commonly used just can be put in the main wavetable base unit of system like this, and can be written into other wavetable data from the external world according to the concrete condition of want synthesizing MIDI file in the expanding wavetable base unit, so just make system very flexible.Just can easy to doly show as national musical instruments such as urheen, Zheng.
If but the note that the user will synthesize will be written into these wavetable datas earlier from the external world to expanding wavetable base or not main wavetable base, like this, it is somewhat loaded down with trivial details just to seem.People wish to have a kind of can the transmission simultaneously and synthesize the sampled data that needs when sending MIDI message.
Summary of the invention
The present invention is for a kind of using method of MIDI file is provided, to solve the deficiency that prior art exists.For achieving the above object, the present invention proposes a plan as follows:
A kind of using method of MIDI music file, it is characterized in that, this MIDI music file comprises the file header part that is used for file is described, the wavetable data district that is used for the music data district part of recording musical information and is used to deposit sampled data information, and the using method of described MIDI music file comprises:
Step a: described MIDI music file is analyzed, the sampled data information in the wave table data field in the described MIDI music file is sent to the expanding wavetable base unit;
Step b: according to the analysis of described MIDI music file is judged it is to obtain sampled data from the expanding wavetable base unit or obtain sampled data from main wavetable base unit;
Step c: it is synthetic that the sampled data that obtains is used for music.
MIDI music file of the present invention can be expanded a byte as address mark information, the byte high position of expansion is non-vanishing, represent that this tone color will synthesize with the sampled data of main wavetable base unit, the byte high position of expansion is zero, represent this tone color will with file with the wave table sampled data synthesize.
The wavetable data district of MIDI music file of the present invention can only preserve some representative sampled datas, and other sampling is then by obtaining these representative sampled data frequency modulation.
Compared with prior art, the invention has the advantages that:
When note that the user will synthesize is not in the main wavetable base in the wave table synthesis system, can to expanding wavetable base, not be written into earlier these wavetable datas from the external world, adopt data but when sending these MIDI music files, just send these, simplified like this from the process of external world's input wave table sampled data, seemed convenient and swift.
Purpose, characteristics and the advantage of the invention of this reality will be in conjunction with the embodiments, are further described with reference to accompanying drawing.
Description of drawings
Fig. 1 is the structural drawing of common MIDI music file.
Fig. 2 is the structural drawing of MIDI music file of the present invention.
Fig. 3 is the structural drawing of a wave table synthesis system.
Fig. 4 is the sampling of five sections wave tables of urheen.
Embodiment
With reference to accompanying drawing 1,2, Fig. 1 is the structural drawing of common MIDI music file, and Fig. 2 is the structural drawing of the MIDI music file that uses among the present invention.
A kind of MIDI music file comprises: file header part, music data district part;
The top of file branch comprises some statement parameters to file;
Music data district part has been noted down real music information, and a music file can contain a plurality of music datas district;
MIDI music file of the present invention also comprises the wavetable data district, deposits sampled data information in the wavetable data district.
Described MIDI music file when being sent out, is the MIDI message that sends the wave table sampled data that comprises in the wavetable data district simultaneously.
Described MIDI music file can be expanded a byte as address mark information, the byte high position of expansion is non-vanishing, represent that this tone color will synthesize with the sampled data of main wavetable base unit, the byte high position of expansion is zero, represent this tone color will with file with the wave table sampled data synthesize.
The wavetable data district of described MIDI music file can only preserve some representative sampled datas, and other sampling is then by obtaining these representative sampled data frequency modulation.
With reference to Fig. 3, in the wave table synthesis system, synthesize example with a MIDI music file, illustrate how this music file synthesizes.
Here said wave table synthesis system comprises: message-analysis module, wavetable base module, wave table synthesis module.Wherein, the wavetable base module comprises main wavetable base unit and expanding wavetable base unit.
A MIDI music file is arranged, and this document has file header part, music data part and wavetable data part, and we can also add an extended byte in this MIDI music file.At first, receive a MIDI music file by message-analysis module, such as, 0,0C0 00 this MIDI message, what represent this section MIDI data recording is the melody that a Shoudu Iron and Steel Co qin is played, the 3rd byte 00 is exactly the code of piano in standard MIDI, we can give byte of this extension of message now again, obtain 00 C0 00 80, at this moment, this byte high position that increases is 1, with regard to representing that No. 0 this tone color will synthesize with the sampling in the main wavetable base unit, also keeps this tone color of piano so here; If this byte of expansion is 0, that is, obtain message 00 C0 00 02, represent No. 2 these tone colors will to be mapped to file with wavetable base in No. 2 tone colors on go.If what No. 2 tone colors were represented is urheen, so such MIDI file just can synthesize the melody of urheen.After message-analysis module is analyzed the MIDI music file, with this MIDI music file with the content in wavetable data district send to expansion wave table unit.We are according to obtaining sampled data from main wavetable base unit or expanding wavetable base, and in conjunction with other parameter informations that message-analysis module obtains, are synthesized by the wave table synthesis module at last.
With reference to Fig. 4, the sampling of five sections wave tables of expression urheen.
Among the present invention, wavetable data will be formed a file with the melody file and send, so will reduce the size of wavetable data district wave table sampled data as far as possible.
For example: the wavetable base of a urheen has been preserved five sections wave table samplings, is respectively that urheen is playing 40,66,82,96, the sampled data during 110 notes.Stipulate that in the parameter of wavetable base the tone color between the 0-60 is synthetic with sampling 1, the tone color between the 61-60 is synthetic with sampling 2, and the tone color between the 71-90 is synthetic with sampling 3, and the tone color between the 91-100 is synthetic with sampling 4, and the tone color between the 101-127 is synthetic with sampling 5.If synthetic note 73, will 3 carry out frequency modulation to sampling so, frequency is transferred to 73 from note 82.Just can represent whole 128 notes of urheen like this with five samplings.But,, so both can delete the size that other sampled datas reduce the wavetable data district if all notes of urheen melody of issue all between 70-90, only store a sampling 3 so in the wavetable data district just passable.
A kind of MIDI music file of the present invention, be not restricted to listed utilization in instructions and the embodiment, it can be applied to various suitable the present invention's field fully, for those skilled in the art, can easily realize additional advantage and make amendment, therefore under the situation of the spirit and scope of the universal that does not deviate from claim and equivalency range and limited, the examples shown that the present invention is not limited to specific details, representational equipment and illustrates here and describe.
Claims (3)
1, a kind of using method of MIDI music file, it is characterized in that, this MIDI music file comprises the file header part that is used for file is described, the wavetable data district that is used for the music data district part of recording musical information and is used to deposit sampled data information, and the using method of described MIDI music file comprises:
Step a: described MIDI music file is analyzed, the sampled data information in the wave table data field in the described MIDI music file is sent to the expanding wavetable base unit;
Step b: according to the analysis of described MIDI music file is judged it is to obtain sampled data from the expanding wavetable base unit or obtain sampled data from main wavetable base unit;
Step c: it is synthetic that the sampled data that obtains is used for music.
2, the using method of MIDI music file according to claim 1, it is characterized in that: byte of described MIDI music file expansion is as address mark information, if in step a by the analysis of MIDI music file is learnt that an extended byte high position is non-vanishing, then in step b, obtain sampled data from main wavetable base unit, if in step a by the analysis of MIDI music file being learnt an extended byte high position is zero, then obtains sampled data from the expanding wavetable base unit in step b.
3, according to the using method of the described MIDI music file of claim 1, it is characterized in that: the wavetable data district of described MIDI music file only preserves some representative sampled datas, and other sampling is then by obtaining these representative sampled data frequency modulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101168209A CN1306435C (en) | 2003-11-28 | 2003-11-28 | A MIDI music file |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101168209A CN1306435C (en) | 2003-11-28 | 2003-11-28 | A MIDI music file |
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| Publication Number | Publication Date |
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| CN1547130A CN1547130A (en) | 2004-11-17 |
| CN1306435C true CN1306435C (en) | 2007-03-21 |
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| CNB2003101168209A Expired - Fee Related CN1306435C (en) | 2003-11-28 | 2003-11-28 | A MIDI music file |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101770426B (en) * | 2008-12-31 | 2013-01-23 | 深圳市朗科科技股份有限公司 | Storage method and storage equipment |
| CN101571869B (en) * | 2009-05-31 | 2011-04-20 | 北京握奇数据系统有限公司 | File memory and read method of smart card and device thereof |
| CN102169684B (en) * | 2011-04-13 | 2013-01-02 | 杭州师范大学 | A MIDI file structure and a generating apparatus for Gongche notation |
| CN103956156B (en) * | 2014-03-17 | 2015-09-23 | 熊世林 | MIDI data processing method in Intelligent electronic musical instrumens |
| CN105205047A (en) * | 2015-09-30 | 2015-12-30 | 北京金山安全软件有限公司 | Playing method, converting method and device of musical instrument music score file and electronic equipment |
| CN105279284A (en) * | 2015-11-23 | 2016-01-27 | 吟飞科技(江苏)有限公司 | Electronic organ music file and application method thereof |
| CN105847573A (en) * | 2016-04-19 | 2016-08-10 | 乐视控股（北京）有限公司 | Mobile phone and method for adjusting volume of ringtone intelligently |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640590A (en) * | 1992-11-18 | 1997-06-17 | Canon Information Systems, Inc. | Method and apparatus for scripting a text-to-speech-based multimedia presentation |
| US20010044663A1 (en) * | 1996-12-26 | 2001-11-22 | Sang Weon Lee | Sound controller |
| US6355869B1 (en) * | 1999-08-19 | 2002-03-12 | Duane Mitton | Method and system for creating musical scores from musical recordings |
-
2003
- 2003-11-28 CN CNB2003101168209A patent/CN1306435C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5640590A (en) * | 1992-11-18 | 1997-06-17 | Canon Information Systems, Inc. | Method and apparatus for scripting a text-to-speech-based multimedia presentation |
| US20010044663A1 (en) * | 1996-12-26 | 2001-11-22 | Sang Weon Lee | Sound controller |
| US6355869B1 (en) * | 1999-08-19 | 2002-03-12 | Duane Mitton | Method and system for creating musical scores from musical recordings |
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| CN1547130A (en) | 2004-11-17 |
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Granted publication date: 20070321 Termination date: 20121128 |