CN1547185A - Wavetable synthesized system capable of expanding tone quality - Google Patents
Wavetable synthesized system capable of expanding tone quality Download PDFInfo
- Publication number
- CN1547185A CN1547185A CNA2003101168196A CN200310116819A CN1547185A CN 1547185 A CN1547185 A CN 1547185A CN A2003101168196 A CNA2003101168196 A CN A2003101168196A CN 200310116819 A CN200310116819 A CN 200310116819A CN 1547185 A CN1547185 A CN 1547185A
- Authority
- CN
- China
- Prior art keywords
- wave table
- wavetable base
- wavetable
- base unit
- expanding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 50
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 50
- 239000000284 extract Substances 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 33
- 238000004458 analytical method Methods 0.000 claims description 22
- 239000003086 colorant Substances 0.000 claims description 7
- 241001269238 Data Species 0.000 claims description 4
- 238000013507 mapping Methods 0.000 claims description 4
- 238000009527 percussion Methods 0.000 claims description 4
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000875 corresponding effect 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
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Electrophonic Musical Instruments (AREA)
- Auxiliary Devices For Music (AREA)
Abstract
The invention is a kind of wave table synthesizing system which includes: a message analyzing model, a wave table bank model, a wave table synthesizing model; the wave table bank synthesizing model includes a primary wave table bank unit and an extended wave table bank unit. The message analyzing model analyzes and judges the MIDI message and confirms if the correspondent wave table sample is in the primary wave table bank unit or in the extended wave table bank unit, the message analyzing model acquires the attributes information of the sampled data from the wave table bank unit or the extended wave table bank unit according to the judgment result, and carries on calculation to the parameter related to the sample, acquires the relative parameter information including the address information, then transmits the wave table synthesizing model, the synthesizing model extract the wave table sample information from the primary table bank unit or the extended wave table bank unit according to the received correlative information, and carries on the synthesis.
Description
Technical field
The present invention relates to be used in the synthetic field of MIDI wave table on the mobile platform, specifically, relate to a kind of wave table synthesis system of expanding tone color.
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 classic melody 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.
Summary of the invention
The objective of the invention is for a kind of wave table synthesis system of expanding tone color is provided, this system can make wavetable base be expanded, and can synthesize note according to user's needs, reaches synthetic flexibly purpose.
For achieving the above object, it is as follows to the invention provides scheme:
A kind of wave table synthesis system of expanding tone color comprises: receive MIDI message message-analysis module, wavetable base module, wave table synthesis module;
Wavetable base synthesis module of the present invention comprises main wavetable base unit and expanding wavetable base unit;
Message-analysis module of the present invention is carried out analysis and judgement to the tone color information of MIDI message and is determined that the pairing wave table sampling of this tone color is in main wavetable base unit or in the expanding wavetable base unit, message-analysis module is obtained the attribute information of sampled data from main wavetable base unit or expanding wavetable base unit according to judged result, and a parameter relevant with this sampling is carried out computing, obtain comprising the correlation parameter information of address information, issue the wave table synthesis module then, the wave table synthesis module extracts the wave table sample information according to the correlation parameter information that receives and synthesizes from main wavetable base unit or expanding wavetable base unit.
Comprise tone color mapping algorithm unit in the message-analysis module of the present invention.
Comprise the enveloping curve generation unit in the wave table synthesis module of the present invention, the waveform generation unit, after receiving the correlation parameter information that comprises address information that transmits from the wavetable base module when the wave table synthesis module, enveloping curve generation unit in the wave table synthesis module generates enveloping curve according to the correlation parameter information that obtains, waveform generation unit in the wave table synthesis module extracts needed wave table sample information according to the correlation parameter information that obtains from the wavetable base module, be aided with other parameters again frequency modulation generation waveform is carried out in sampling, the waveform that the waveform generation unit is produced with enveloping curve carries out the amplitude modulation operation, finishes the synthetic work of this note.
In the wave table synthesis system of the present invention, the address information that the wave table that main wavetable base unit and expanding wavetable base unit unified addressing, wave table synthesis module are sent according to the information analysis module is fully sampled is extracted the wave table sample information and is synthesized from main wavetable base unit or expanding wavetable base unit.
In the wave table synthesis system of the present invention, main wavetable base unit separates addressing with the expanding wavetable base unit, increase the wavetable base selected cell in the wave table synthesis unit, the attribute information of the sampled data that message-analysis module will be obtained from the wavetable base module carries out the correlation parameter computing, issue the wavetable base selected cell, the wavetable base selected cell is issued the waveform generation unit with wavetable base selection information, and the waveform generation unit is selected Information Selection master wavetable base unit according to wavetable base, and (perhaps the expanding wavetable base unit reads the correlated sampling data message.
Main wavetable base of the present invention unit is a read-only wavetable base unit, can deposit all 128 kinds of tone colors and 47 kinds of percussion music of standard MIDI regulation.
Expanding wavetable base of the present invention unit is a read-write wavetable base unit, according to the concrete condition of the MIDI file that will synthesize, can be written into other wavetable data from the external world.
The wave table sampling that expanding wavetable base of the present invention unit is written into from the external world can be 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:
Expanding wavetable base of the present invention 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 according to the concrete condition of want synthesizing MIDI file in the expanding wavetable base unit, be written into other wavetable data from the external world, so just make system very flexible.Just can easy to doly show as national musical instruments such as urheen, Zheng.
Purpose of the present invention, characteristics and advantage will be in conjunction with the embodiments, are further described with reference to accompanying drawing.
Description of drawings
Accompanying drawing 1 is the primary structure block diagram of system of the present invention;
Embodiment
With reference to accompanying drawing, Fig. 1 is the primary structure block diagram of system of the present invention.
A kind of wave table synthesis system of expanding tone color comprises: receive MIDI message message-analysis module 1, wavetable base module 2, wave table synthesis module 3;
Wavetable base synthesis module 2 of the present invention comprises main wavetable base unit 4 and expanding wavetable base unit 5; The tone color information of 1 pair of MIDI message of message-analysis module of the present invention is carried out analysis and judgement and is determined that the pairing wave table sampling of this tone color is in main wavetable base unit 4 or in expanding wavetable base unit 5, message-analysis module 1 is obtained the attribute information of sampled data from main wavetable base unit 4 or expanding wavetable base unit 5 according to judged result, and a parameter relevant with this sampling is carried out computing, obtain comprising the correlation parameter information of address information, issue wave table synthesis module 3 then, wave table synthesis module 3 extracts the wave table sample information according to the correlation parameter information that receives and synthesizes from main wavetable base unit 4 or expanding wavetable base unit 5.
Comprise tone color mapping algorithm unit in the message-analysis module 1 of the present invention.
Comprise enveloping curve generation unit 6 in the wave table synthesis module 3 of the present invention, waveform generation unit 7, after receiving the correlation parameter information that comprises address information that transmits from wavetable base module 2 when wave table synthesis module 3, enveloping curve generation unit 6 in the wave table synthesis module 3 generates enveloping curve according to the correlation parameter information that obtains, waveform generation unit 7 in the wave table synthesis module 3 extracts needed wave table sample information according to the correlation parameter information that obtains from wavetable base module 2, be aided with other parameters again frequency modulation generation waveform is carried out in sampling, the waveform that waveform generation unit 7 is produced with enveloping curve carries out the amplitude modulation operation, finishes the synthetic work of this note.
In the wave table synthesis system of the present invention, main wavetable base unit 4 and expanding wavetable base unit 5 unified addressing, the address information that the wave table that wave table synthesis module 3 sends according to information analysis module 1 is fully sampled is extracted the wave table sample information and is synthesized from main wavetable base unit 4 or expanding wavetable base unit 5.
Main wavetable base of the present invention unit 4 separates addressing with expanding wavetable base unit 5, increase wavetable base selected cell 8 in the wave table synthesis unit 3, the attribute information of the sampled data that message-analysis module 1 will be obtained from wavetable base module 2 carries out the correlation parameter computing, issue wavetable base selected cell 8, wavetable base selected cell 8 is issued waveform generation unit 7 with wavetable base selection information, and waveform generation unit 7 selects Information Selection master wavetable base unit 4 or expanding wavetable base unit 5 to read the correlated sampling data message according to wavetable base.
Main wavetable base of the present invention unit 4 is read-only wavetable base unit, can deposit all 128 kinds of tone colors and 47 kinds of percussion music of standard MIDI regulation.
Expanding wavetable base of the present invention unit 5 is read-write wavetable base unit, according to the concrete condition of the MIDI file that will synthesize, can be written into other wavetable data from the external world.
The wave table sampling that expanding wavetable base of the present invention unit 5 is written into from the external world can be some representative sampled datas, and other sampling is then by obtaining these representative sampled data frequency modulation.
Here the message-analysis module of mentioning has increased the support to the tone color mapping message.We are example with MIDI message, and one section such hexadecimal code is arranged in the MIDI file: 00 C0 00 00 90 64 70 55 80 6470, what 00 C0 00 of first represented 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.The second portion 00 90 64 70 expression pianos this moment note that will strike up No. 64.Be similar in the piano performance of reality, the player begins to press corresponding key at this moment.When third part 55 80 64 70 was illustrated in for 00 90 64 70 the 55th unit interval after taking place, begin to finish the performance of No. 64 note.Be similar to the player and unclamp key at this moment.
Here we can be byte of the tone color message part of MIDI band expansion, if this byte high position that increases is 1, for example: 00 C0 00 80, so just represent that No. 0 tone color will synthesize with the sampling in the main wavetable base unit.If this byte high position that increases is 0, for example: 00 C0 00 02, represent that No. 0 this tone color wants No. 2 tone colors in the expanding wavetable base unit to get on.So ensuing message 00 90 64 70 5,580 64 70 has not just been represented a note of No. 0, tone color, and performance is No. 2 tone colors of expanding wavetable base unit.
With reference to Fig. 2, the sampling of five sections wave tables of expression urheen.
Because will forming a file with the melody file, wavetable base sends, so will reduce the size of wavetable base as far as possible.One of them method is exactly to take out unnecessary wave table sampled data from wavetable base.128 notes that standard MIDI stipulates each tone color, general wavetable base does not all store the true samples data of whole 128 notes get off, but has selected the wave table sampling of more representative notes.If during synthetic other notes, a certain in just sampling with these advances frequency modulation.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 wavetable base if all notes of urheen melody of issue all between 70-90, only store a sampling 3 so in the wavetable base just passable.
The method that another kind reduces wavetable base is that the wave table sampled data is compressed, then the compressed wavetable base of reduction before putting into the expanding wavetable base of system.
The size that also has other method can reduce wavetable base has not in addition just been given unnecessary details here.
A kind of wave table synthesis system of expanding tone color 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 (8)
1, a kind of wave table synthesis system of expanding tone color comprises: receive MIDI message message-analysis module
(1), wavetable base module (2), wave table synthesis module (3);
It is characterized in that: described wavetable base synthesis module (2) comprises main wavetable base unit (4) and expanding wavetable base unit (5);
Message-analysis module (1) is carried out analysis and judgement to the tone color information of MIDI message and is determined that the pairing wave table sampling of this tone color is in main wavetable base unit (4) or in expanding wavetable base unit (5), message-analysis module (1) is obtained the attribute information of sampled data from main wavetable base unit (4) or expanding wavetable base unit (5) according to judged result, and a parameter relevant with this sampling is carried out computing, obtain comprising the correlation parameter information of address information, issue wave table synthesis module (3) then, wave table synthesis module (3) extracts the wave table sample information according to the correlation parameter information that receives and synthesizes from main wavetable base unit (4) or expanding wavetable base unit (5).
2, wave table synthesis system according to claim 1 is characterized in that: comprise tone color mapping algorithm unit in the message-analysis module (1).
3, wave table synthesis system according to claim 1, it is characterized in that: comprise enveloping curve generation unit (6) in the wave table synthesis module (3), waveform generation unit (7), after receiving the correlation parameter information that comprises address information that transmits from wavetable base module (2) when wave table synthesis module (3), enveloping curve generation unit (6) in the wave table synthesis module (3) generates enveloping curve according to the correlation parameter information that obtains, waveform generation unit (7) in the wave table synthesis module (3) extracts needed wave table sample information according to the correlation parameter information that obtains from wavetable base module (2), be aided with other parameters again frequency modulation generation waveform is carried out in sampling, the waveform that waveform generation unit (7) is produced with enveloping curve carries out the amplitude modulation operation, finishes the synthetic work of this note.
4, wave table synthesis system according to claim 1, it is characterized in that: the address information that the wave table that main wavetable base unit (4) and expanding wavetable base unit (5) unified addressing, wave table synthesis module (3) send according to information analysis module (1) is fully sampled is extracted the wave table sample information and is synthesized from main wavetable base unit (4) or expanding wavetable base unit (5).
5, wave table synthesis system according to claim 1, it is characterized in that: main wavetable base unit (4) separates addressing with expanding wavetable base unit (5), increase wavetable base selected cell (8) in the wave table synthesis unit (3), the attribute information of the sampled data that message-analysis module (1) will be obtained from wavetable base module (2) carries out the correlation parameter computing, issue wavetable base selected cell (8), wavetable base selected cell (8) is issued waveform generation unit (7) with wavetable base selection information, and waveform generation unit (7) selects Information Selection master wavetable base unit (4) or expanding wavetable base unit (5) to read the correlated sampling data message according to wavetable base.
6, wave table synthesis system according to claim 1 is characterized in that: main wavetable base unit (4) is a read-only wavetable base unit, can deposit all 128 kinds of tone colors and 47 kinds of percussion music of standard MIDI regulation.
7, wave table synthesis system according to claim 1 is characterized in that: expanding wavetable base unit (5) are read-write wavetable base unit, according to the concrete condition of the MIDI file that will synthesize, can be written into other wavetable data from the external world.
8, wave table synthesis system according to claim 6, it is characterized in that: the wave table sampling that expanding wavetable base unit (5) are written into from the external world can be 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 |
|---|---|---|---|
| CNB2003101168196A CN100361195C (en) | 2003-11-28 | 2003-11-28 | Wavetable synthesized system capable of expanding tone quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101168196A CN100361195C (en) | 2003-11-28 | 2003-11-28 | Wavetable synthesized system capable of expanding tone quality |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1547185A true CN1547185A (en) | 2004-11-17 |
| CN100361195C CN100361195C (en) | 2008-01-09 |
Family
ID=34337624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101168196A Expired - Fee Related CN100361195C (en) | 2003-11-28 | 2003-11-28 | Wavetable synthesized system capable of expanding tone quality |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100361195C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776806B (en) * | 2005-11-25 | 2010-05-05 | 北京中星微电子有限公司 | Tone bank inquiry-play system and its implementing mehtod |
| CN101162581B (en) * | 2006-10-13 | 2011-06-08 | 安凯(广州)微电子技术有限公司 | Method for embedding and extracting tone color in MIDI document |
| CN112216260A (en) * | 2020-10-12 | 2021-01-12 | 中北大学 | Electronic erhu system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5768628A (en) * | 1995-04-14 | 1998-06-16 | Nvidia Corporation | Method for providing high quality audio by storing wave tables in system memory and having a DMA controller on the sound card for transferring the wave tables |
| US6100461A (en) * | 1998-06-10 | 2000-08-08 | Advanced Micro Devices, Inc. | Wavetable cache using simplified looping |
| JP3806263B2 (en) * | 1998-07-16 | 2006-08-09 | ヤマハ株式会社 | Musical sound synthesizer and storage medium |
-
2003
- 2003-11-28 CN CNB2003101168196A patent/CN100361195C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1776806B (en) * | 2005-11-25 | 2010-05-05 | 北京中星微电子有限公司 | Tone bank inquiry-play system and its implementing mehtod |
| CN101162581B (en) * | 2006-10-13 | 2011-06-08 | 安凯(广州)微电子技术有限公司 | Method for embedding and extracting tone color in MIDI document |
| CN112216260A (en) * | 2020-10-12 | 2021-01-12 | 中北大学 | Electronic erhu system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100361195C (en) | 2008-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3654079B2 (en) | Waveform generation method and apparatus | |
| JP3654083B2 (en) | Waveform generation method and apparatus | |
| CN1111840C (en) | Accompanying song data structure method and apparatus for accompanying song | |
| CN1674089A (en) | Apparatus and method for processing bell sound | |
| CN1306435C (en) | A MIDI music file | |
| CN100361195C (en) | Wavetable synthesized system capable of expanding tone quality | |
| JP3654080B2 (en) | Waveform generation method and apparatus | |
| JP3654082B2 (en) | Waveform generation method and apparatus | |
| CN2689391Y (en) | Wave synthesizing system for extending tone | |
| CN1649429A (en) | Music and speech synthetic device and method for mobile communication terminal | |
| JP3654084B2 (en) | Waveform generation method and apparatus | |
| CN1205829C (en) | Music format conversion method for wireless hand-held device | |
| US7534952B2 (en) | Performance data processing apparatus and program | |
| CN100342424C (en) | Rhythm control and sound mixing method for musical synthesis | |
| JP4239706B2 (en) | Automatic performance device and program | |
| CN1271592C (en) | Musical scale generating method in music synthesis | |
| CN1206603C (en) | Music VF producing method and playback system | |
| JP3885803B2 (en) | Performance data conversion processing apparatus and performance data conversion processing program | |
| CN1719513A (en) | Audio frequency sequence device and sound document treatment method | |
| JP3211646B2 (en) | Performance information recording method and performance information reproducing apparatus | |
| JP3897026B2 (en) | Performance data conversion processing apparatus and performance data conversion processing program | |
| CN1661672B (en) | Wavetable music synthesizing system and method based on importance of data to carry out memory management | |
| JP2002041035A (en) | Method for generating encoded data for reproduction | |
| JP2002006841A (en) | Acoustic signal encoding system | |
| JP3933162B2 (en) | Waveform generation method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20121128 |