JPS61260295A - Electronic musical instrument - Google Patents

Electronic musical instrument

Info

Publication number
JPS61260295A
JPS61260295A JP60103009A JP10300985A JPS61260295A JP S61260295 A JPS61260295 A JP S61260295A JP 60103009 A JP60103009 A JP 60103009A JP 10300985 A JP10300985 A JP 10300985A JP S61260295 A JPS61260295 A JP S61260295A
Authority
JP
Japan
Prior art keywords
musical
tone
musical instrument
electronic musical
waveform
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
Application number
JP60103009A
Other languages
Japanese (ja)
Other versions
JPH0435760B2 (en
Inventor
永山 幸男
哲彦 金秋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP60103009A priority Critical patent/JPS61260295A/en
Publication of JPS61260295A publication Critical patent/JPS61260295A/en
Publication of JPH0435760B2 publication Critical patent/JPH0435760B2/ja
Granted legal-status Critical Current

Links

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、異なった周波数の楽音を同時に複数個発生さ
せるのに適した電子楽器に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic musical instrument suitable for simultaneously generating a plurality of musical tones of different frequencies.

従来の技術 従来、電子楽器の分野において、鍵盤などに対応する異
なった周波数の楽音を同時に複数個発生させる方法とし
ては、発音数が1つの楽音発生器を複数個備える方法と
、1つの楽音発生器を時分割で動作させ、複数の楽音を
同時に得る方法とがある。
Conventional technology Conventionally, in the field of electronic musical instruments, there are two methods for simultaneously generating multiple musical tones of different frequencies corresponding to keyboards, etc.: a method of providing a plurality of musical tone generators each producing one sound, and a method of generating a single musical tone. There is a method of operating the instrument in a time-sharing manner to obtain multiple musical tones at the same time.

以下図面を参照しながら、上述した従来の電子楽器の一
例について説明する。
An example of the above-mentioned conventional electronic musical instrument will be described below with reference to the drawings.

第6図は従来の電子楽器のブロック図を示すものである
。第6図において、61は鍵盤部、62は音色選択部、
ssa、esbは楽音発生器、e4a 、64bは楽音
波形メモリ、65は楽音再生部である。
FIG. 6 shows a block diagram of a conventional electronic musical instrument. In FIG. 6, 61 is a keyboard section, 62 is a tone selection section,
ssa and esb are musical tone generators, e4a and 64b are musical waveform memories, and 65 is a musical tone reproduction section.

電子楽器は、同時発音可能なチャンネル数16を得るた
め、チャンネル数8の楽音発生器を2個、楽音波形メモ
リ2個を備えている。
The electronic musical instrument is equipped with two musical tone generators each having eight channels and two musical waveform memories in order to obtain sixteen channels that can simultaneously produce sound.

楽音発生器は、第8図のような構成である。第8図にお
いて、81はタイミング信号発生部で楽音発生器の動作
を制御する信号を発生している。
The musical tone generator has a configuration as shown in FIG. In FIG. 8, reference numeral 81 denotes a timing signal generator which generates a signal for controlling the operation of the musical tone generator.

82はノートクロック発生部、83はアドレスカウンタ
、84はエンベロープカウンタ、85は波形演算部、8
6はデジタルアナログ変換回路、87a 、sybはサ
ンプルホールド回路、88はローパスフィルタである0 ノートクロック発生部82はプログラマブルなカウンタ
で鍵盤などから音階情報を得て、音階に比例した周期の
信号を発生する。上記信号が発生すると発音チャンネル
に対応するスロットでアドレスカラ/りを更新し、メモ
リから楽音波形を読み出し、次のタイムスロットで楽音
波形間、及び楽音波形とエンベロープとの演算をおこな
い、デジタルアナログ変換回路(DAC)asでアナロ
グ波形となシサンプルホールド回路87aに記憶される
。次に上記信号が発生すると、サンプルホールド回路8
7bに移シ、ノートクロックに比例した周期の楽音が得
られる。第9図は発音チャンネル1に対応する信号の流
れを示す図である。また第7図は楽音発生器の楽音波形
の読み出し状態を示したものである0以上のような楽音
発生器は、サンプリング周波数が音階信号に比例してい
るため、折シ返し成分が楽音の周期に一致するので、に
ごりのない音が作れるが、デジタルアナログ変換回路・
サンプルホールド回路の動作速度で制限を受け、電子楽
器が同時発音可能なチャンネル数を16必要とする時、
2個の楽音発生器と2個の楽音波形メモリを必要として
いた。
82 is a note clock generation section, 83 is an address counter, 84 is an envelope counter, 85 is a waveform calculation section, 8
6 is a digital-to-analog conversion circuit, 87a and syb are sample and hold circuits, and 88 is a low-pass filter.0 Note clock generator 82 uses a programmable counter to obtain scale information from a keyboard, etc., and generates a signal with a period proportional to the scale. do. When the above signal is generated, the address color/re is updated in the slot corresponding to the sound generation channel, the musical sound waveform is read from the memory, and in the next time slot, calculations are performed between the musical sound waveforms and between the musical sound waveform and the envelope, and digital-to-analog conversion is performed. The analog waveform is stored in the sample hold circuit 87a by the circuit (DAC) as. Next, when the above signal is generated, the sample hold circuit 8
Moving to 7b, a musical tone with a period proportional to the note clock is obtained. FIG. 9 is a diagram showing the flow of signals corresponding to sound generation channel 1. In addition, Figure 7 shows the reading state of the musical sound waveform of the musical tone generator.In musical tone generators such as 0 or more, the sampling frequency is proportional to the scale signal, so the aliasing component is equal to the period of the musical tone. Since it matches the
When an electronic musical instrument requires 16 channels that can simultaneously sound due to limitations on the operating speed of the sample and hold circuit,
Two musical tone generators and two musical waveform memories were required.

発明が解決しようとする問題点 しかしながら上記のような構成では、電子楽器が必要と
する同時発音可能なチャンネル数を得るためには、複数
の楽音発生器と同じ数だけ同一の楽音波形メモリを持た
なければならず、大幅なコストアップとなっていた。
Problems to be Solved by the Invention However, with the above configuration, in order to obtain the number of channels that can simultaneously produce the sounds required by an electronic musical instrument, it is necessary to have the same number of tone generators and the same number of tone waveform memories. This resulted in a significant increase in costs.

本発明は、上記問題点に鑑み、大幅なコストアップをせ
ずに、上記楽音発生器の利点を生かし、電子楽器が必要
とする、同時発音可能なチャンネル数を持った電子楽器
を提供するものである。
In view of the above-mentioned problems, the present invention provides an electronic musical instrument that takes advantage of the advantages of the musical tone generator described above and has the number of channels that can simultaneously produce sound, which is necessary for an electronic musical instrument, without significantly increasing costs. It is.

問題点を解決するための手段 上記問題点を解決するため、本発明の電子楽器は、複数
の楽音発生器間の周期をとり、1個の楽音波形メモリか
ら時分割で楽音波形を読み出すようにしたものである。
Means for Solving the Problems In order to solve the above-mentioned problems, the electronic musical instrument of the present invention takes a period between a plurality of musical tone generators and reads musical sound waveforms from one musical sound waveform memory in a time-division manner. This is what I did.

作  用 本発明は上記の構成によって、電子楽器が必要とする同
時発音可能なチャンネル数を得るため、複数の楽音発生
器を備えても、1゛個の楽音波形メモリで楽音の発生が
可能となる。
Effect of the Invention With the above-described configuration, the present invention makes it possible to generate musical tones with one musical waveform memory even if a plurality of musical tone generators are provided, in order to obtain the number of channels that can simultaneously produce the sounds required by an electronic musical instrument. Become.

実施例 以下本発明の一実施例の電子楽器について、図面を参照
しながら説明する。
Embodiment An electronic musical instrument according to an embodiment of the present invention will be described below with reference to the drawings.

第1図は本発明の一実施例釦おける電子楽器のブロック
図を示すものである。第1図において、11は鍵tt部
、12は音色選択部、13 a 、 1 sbは楽音発
生器(TGI 、 TG2 )で基本的な構成は全く同
一である。14はRCM (Read 0nly Me
mory)を有する楽音波形メモリ、16は楽音発生部
である0 電子楽器は、同時発音可能なチャ/ネル数16第2図は
本発明の電子楽器に使用する楽音発生。
FIG. 1 shows a block diagram of an electronic musical instrument with a button according to an embodiment of the present invention. In FIG. 1, 11 is a key tt section, 12 is a timbre selection section, 13a and 1sb are tone generators (TGI, TG2), and the basic configuration is completely the same. 14 is RCM (Read Only Me
16 is a musical sound generation unit.The electronic musical instrument has 16 channels that can simultaneously produce sounds.FIG. 2 shows the musical sound generation unit used in the electronic musical instrument of the present invention.

器のタイミング信号発生部の主要部である。第2図にお
いて、21は第1図の楽音発生器13aのタイミング信
号発生部である。22は第1図の楽音信号発生器13b
のタイミング信号発生部である。いま同期回路26aか
らタイミング信号発生部22へ第3図のタイミングでS
YN信号を送ると、6進カウンタ23bはリセットがか
かシ、タイミング信号発生部22のシーケンスは、1つ
遅れて発生する。楽音発生器の楽音波形を読み出すタイ
ミングを第4図のように、シーケンスナンバーの1と3
とすれば、楽音発生器は同一構成であっても時分割で楽
音波形を読み出すことができる。
This is the main part of the timing signal generation section of the device. In FIG. 2, reference numeral 21 denotes a timing signal generating section of the musical tone generator 13a of FIG. 22 is the musical tone signal generator 13b in FIG.
This is the timing signal generation section. Now, S is sent from the synchronous circuit 26a to the timing signal generator 22 at the timing shown in FIG.
When the YN signal is sent, the hexadecimal counter 23b is reset and the sequence of the timing signal generator 22 is generated with a delay of one. The timing for reading out the musical sound waveform of the musical tone generator is determined by sequence numbers 1 and 3 as shown in Figure 4.
If so, musical sound waveforms can be read out in a time-division manner even if the musical tone generators have the same configuration.

なお、本実施例において、波形を2回楽音波形メモリか
ら読み出しているが、波形とエンベロープ、またはどち
らか一方としてもよい。
In this embodiment, the waveform is read twice from the tone waveform memory, but the waveform and/or the envelope may be read out.

また、本実施例において、楽音発生器は同時発音可能な
チャンネル数8を2個持ったが、第6図の第2の実施例
のように、楽音発生器53a〜53pを電子楽器が必要
とする、同時発音可能なチャンネル数の数だけ持っても
よい。尚、鍵盤部61、音色選択部62.各楽音発生器
53a〜53p波形メモリ54はデータバス(DB)を
介してデータ信号等の入出力を行う。56は楽音再生部
である。
Further, in this embodiment, the musical tone generator has two channels (8) that can produce simultaneous sound, but as in the second embodiment shown in FIG. You may have as many channels as there are channels that can be played simultaneously. Note that the keyboard section 61, tone selection section 62. Each musical tone generator 53a to 53p waveform memory 54 inputs and outputs data signals and the like via a data bus (DB). 56 is a musical tone reproduction section.

以上のように、本実施例によれば、同一構成の楽音発生
器を複数個使っても、同期をとることによシ、複数の楽
音波形メモリを持たずに、時分割で楽音波形を読み出す
ことができる。
As described above, according to this embodiment, even if a plurality of tone generators having the same configuration are used, the tone waveforms can be read out in a time-sharing manner by synchronizing the tone generators without having multiple tone waveform memories. be able to.

発明の効果 以上のように本発明の電子楽器は、楽音発生器を複数個
備えても、互いの同期をとることによシ、時分割で楽音
波形を読み出せるため、楽音波形メモリを1個持てばよ
く、大幅なコストアップをせずに、電子楽器の同時発音
可能なチャンネル数を増やすことができる。
Effects of the Invention As described above, even if the electronic musical instrument of the present invention is equipped with a plurality of musical tone generators, the musical sound waveforms can be read out in a time-sharing manner by synchronizing each other, so that only one musical sound waveform memory is required. It is possible to increase the number of channels that can be played simultaneously on an electronic musical instrument without significantly increasing costs.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の第1の実施例の電子楽器のブロック図
、第2図は楽音発生器におけるタイミング信号発生部の
ブロック図、第3図はそのタイミングチャート、第4図
は楽音発生器のメモリ読み出しのタイミン’7”、、+
−v−1〜、第6図は本発明の第2の実施例のブロック
図、第6図は従来の電子楽器のブロック図、第7図はそ
のメモリ読み出しのタイミングチャート、第8図は楽音
発生器のブロック図、第9図はその波形発生のタイミン
グチャートテ゛ある。 11・・・・・・鍵盤部、12・・・・・・音色選択部
、13a。 13b・・・・・・楽音発生器、14・・・・・・楽音
波形メモリ、16・・・・・・楽音再生部。 代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図 第 2 因 第3図 第4図
FIG. 1 is a block diagram of an electronic musical instrument according to a first embodiment of the present invention, FIG. 2 is a block diagram of a timing signal generator in a musical tone generator, FIG. 3 is a timing chart thereof, and FIG. 4 is a musical tone generator. Memory read timing '7'',,+
-v-1~, FIG. 6 is a block diagram of the second embodiment of the present invention, FIG. 6 is a block diagram of a conventional electronic musical instrument, FIG. 7 is a timing chart of reading the memory, and FIG. 8 is a musical tone chart. The block diagram of the generator, FIG. 9, is a timing chart of its waveform generation. 11...Keyboard section, 12...Tone selection section, 13a. 13b... Musical sound generator, 14... Musical sound waveform memory, 16... Musical sound reproduction unit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Cause 3 Figure 4

Claims (1)

【特許請求の範囲】[Claims] 複数組の楽音波形のサンプル値を記憶するメモリと、音
色選択情報に基づいて上記メモリから楽音波形を選択し
て読み出し、音階情報に従い楽音を発生する複数個の楽
音発生器とを備え、上記楽音発生器間で互いの同期をと
り、上記メモリから時分割で楽音波形を読み出すことを
特徴とする電子楽器。
A memory for storing a plurality of sets of sample values of musical sound waveforms, and a plurality of musical sound generators that select and read musical sound waveforms from the memory based on tone selection information and generate musical tones according to scale information, An electronic musical instrument characterized in that the generators are synchronized with each other and musical sound waveforms are read out from the memory in a time-division manner.
JP60103009A 1985-05-15 1985-05-15 Electronic musical instrument Granted JPS61260295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60103009A JPS61260295A (en) 1985-05-15 1985-05-15 Electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60103009A JPS61260295A (en) 1985-05-15 1985-05-15 Electronic musical instrument

Publications (2)

Publication Number Publication Date
JPS61260295A true JPS61260295A (en) 1986-11-18
JPH0435760B2 JPH0435760B2 (en) 1992-06-12

Family

ID=14342649

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60103009A Granted JPS61260295A (en) 1985-05-15 1985-05-15 Electronic musical instrument

Country Status (1)

Country Link
JP (1) JPS61260295A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440994A (en) * 1987-08-07 1989-02-13 Casio Computer Co Ltd Sound source control data setting apparatus
JPH03174592A (en) * 1989-12-04 1991-07-29 Kawai Musical Instr Mfg Co Ltd Sound source circuit for electronic musical instrument
JPH0519771A (en) * 1991-02-15 1993-01-29 Yamaha Corp Electronic musical instrument

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2495951B (en) 2011-10-26 2014-07-16 Nexeon Ltd A composition for a secondary battery cell
GB201009519D0 (en) 2010-06-07 2010-07-21 Nexeon Ltd An additive for lithium ion rechargeable battery cells
GB201014706D0 (en) 2010-09-03 2010-10-20 Nexeon Ltd Porous electroactive material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843621A (en) * 1971-09-29 1973-06-23
JPS49130213A (en) * 1973-04-13 1974-12-13
JPS56147521A (en) * 1980-04-17 1981-11-16 Matsushita Electric Ind Co Ltd Frequency dividing circuit
JPS59111692A (en) * 1982-12-17 1984-06-27 松下電器産業株式会社 Electronic musical instrument

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4843621A (en) * 1971-09-29 1973-06-23
JPS49130213A (en) * 1973-04-13 1974-12-13
JPS56147521A (en) * 1980-04-17 1981-11-16 Matsushita Electric Ind Co Ltd Frequency dividing circuit
JPS59111692A (en) * 1982-12-17 1984-06-27 松下電器産業株式会社 Electronic musical instrument

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6440994A (en) * 1987-08-07 1989-02-13 Casio Computer Co Ltd Sound source control data setting apparatus
JP2560336B2 (en) * 1987-08-07 1996-12-04 カシオ計算機株式会社 Sound source device
JPH03174592A (en) * 1989-12-04 1991-07-29 Kawai Musical Instr Mfg Co Ltd Sound source circuit for electronic musical instrument
JPH0519771A (en) * 1991-02-15 1993-01-29 Yamaha Corp Electronic musical instrument

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Publication number Publication date
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