JP3844149B2 - Parameter value correction output device - Google Patents

Description

で求める。つまり、操作子の基準位置比率Ｒ_POS は５０％であり、パラメータの基準値比率Ｒ_VAL は１０％であるので、その比率差ＤＦＦ_HIGHは４０％であり、これを最大値Ｖ_MAX と基準値Ｖ_BAS との差「９０」に乗じて「３６」を求め、これを最大値Ｖ_MAX ＝１００から減じることで、上限値Ｖ_HIGH＝６４を決める。すなわち、操作子６Ａの「０．５」から「１」への操作に対して、パラメータの値は「１０」から「６４」まで変化するようになり、パラメータ値は最大値Ｖ_MAX ＝１００までは変化しない。
【００２７】
いま、操作子６Ａの現在位置Ｐ_NOW が、図２（ｂ）に示すように０．５と１との中間の「０．７５」である場合、上記の比率配分から分かるように、パラメータの現在値Ｖ_NOW は「１０＋（６４−１０）÷２＝３７」となる。操作子６Ａの現在値Ｐ_NOW が図２（ｃ）に示すように上限位置Ｐ_HIGHの「１」まで操作された場合にはパラメータの値は上限値Ｖ_HIGH＝６４となる。この位置では、操作子６Ａは下限方向にだけ操作可能である。この下限方向への操作では、操作子６Ａの操作量に対してパラメータ値の変化が急激とはならないので、この場合には下限値Ｖ_LOW は前述の特開平５−１３４６６６号公報と同様に最小値Ｖ_MIN に設定し、下限方向ストローク「１→０」に対してパラメータを「６４→０」と変化させる。従って、図２（ｄ）に示すように、操作子６Ａを下限方向に現在位置Ｐ_NOW ＝０．５まで操作した時のパラメータ値は「６４〜０」のパラメータ変化範囲の半分の値、すなわち「３２」となり、さらに図２（ｅ）に示すように操作子６Ａを下限位置Ｐ_LOW ＝０まで操作した時のパラメータ値は「０」となる。以降、パラメータの上限値Ｖ_HIGHはパラメータの最大値Ｖ_MAX に一致し、パラメータの下限値Ｖ_LOW はパラメータの最小値Ｖ_MIN に一致するようになり、操作子６Ａの全ストロークにパラメータの全範囲が対応するようになる。
【００２８】
（２）２番目の方法は、上限方向への操作の場合には、比率差ＤＦＦ_HIGHが正であれば、上限値Ｖ_HIGHを
Ｖ_HIGH＝Ｖ_BAS ＋（１−Ｒ_POS ）×（Ｖ_MAX −Ｖ_MIN ）
とし、下限方向への操作の場合には、比率差ＤＦＦ_LOW が正であれば、下限値Ｖ_LOW を
Ｖ_LOW ＝Ｖ_BAS −Ｒ_POS ×（Ｖ_MAX −Ｖ_MIN ）
とする方法である。すなわち，基準値Ｖ_BAS から、操作子６Ａの基準位置比率Ｒ_POS に応じたパラメータ幅分を加算／減算して上限値Ｖ_HIGH、下限値Ｖ_LOW とするものである。
【００２９】
図３を参照して具体例で説明する。前述同様、操作子６Ａが「０〜１」の範囲で操作可能であり、パラメータが「０〜１００」の範囲の値とし、読み出したパラメータの値が「１０」、パラメータ読出時における操作子６Ａの位置が「０．５」とする。よって基準位置Ｐ_BAS は当初は「０．５」であり、図３（ａ）に示すように、この操作子６Ａの現在位置Ｐ_NOW （＝Ｐ_BAS ＝０．５）に対して割り当てられるパラメータ値は「１０」となる。
【００３０】
この状態から、操作子６Ａを上限方向に操作するものとする。この場合、上限値Ｖ_HIGHは、
Ｖ_HIGH＝Ｖ_BAS ＋（１−Ｒ_POS ）×（Ｖ_MAX −Ｖ_MIN ）
＝１０＋（１−０．５）×（１００−０）＝６０
で求める。すなわち、操作子６Ａの「０．５」から「１」への操作に対して、パラメータの値は「１０」から「６０」まで変化するようになり、最大値Ｖ_MAX ＝１００までは変化しない。
【００３１】
いま、操作子６Ａの現在位置Ｐ_NOW が、図３（ｂ）に示すように０．５と１の中間の「０．７５」である場合、上記の比率配分から分かるように、パラメータの現在値Ｖ_NOW は「１０＋（６０−１０）÷２＝３５」となる。操作子６Ａの現在値Ｐ_NOW が図３（ｃ）に示すように上限位置Ｐ_HIGHの「１」まで操作された場合にはパラメータの値は上限値Ｖ_HIGH＝６０となる。この位置では、前述の１番目の方法の場合と同様に、操作子６Ａは下限方向にだけ操作可能である。この下限方向への操作では、操作子６Ａの操作量に対してパラメータ値の変化が急減とはならないので、この場合には下限値Ｖ_LOW は前述の特開平５−１３４６６６号公報と同様に最小値Ｖ_MIN に設定し、下限方向ストローク「１→０」に対してパラメータを「６０→０」と変化させる。従って、図３（ｄ）に示すように、操作子６Ａを下限方向に現在位置Ｐ_NOW ＝０．５まで操作した時のパラメータ値は「６０〜０」のパラメータ変化範囲の半分の値、すなわち「３０」となり、さらに図３（ｅ）に示すように操作子６Ａを下限位置Ｐ_LOW ＝０まで操作した時のパラメータ値は「０」となる。以降、パラメータの上限値Ｖ_HIGHはパラメータの最大値Ｖ_MAX に一致し、パラメータの下限値Ｖ_LOW はパラメータの最小値Ｖ_MIN に一致するようになり、操作子６Ａの全ストロークにパラメータの全範囲が対応するようになる。
【００３２】
以下、フローチャートを参照して本発明の実施例装置の詳細な動作を説明する。まず初めに、上述の（１）の方法により上限値Ｖ_HIGHと下限値Ｖ_LOW を決める実施例について説明する。
操作子６のいずれかが操作されると、ＣＰＵ１はこれらの操作子６のいずれが操作されたかを検出し、その操作情報に基づいて以下に詳述する初期化ルーチンあるいは計算ルーチンを実行する。
【００３３】
図４には初期化ルーチンのフローチャートが示される。この初期化ルーチンはパラメータ選択スイッチ６Ｂが操作されてパラメータが選択されることで、操作子６Ａに割り当てるパラメータの種類が変更された場合に実行される。この初期化ルーチンにおいては、操作子の操作方向ＤＲＣを「０」とし、操作子６Ａの現在の位置を前回位置Ｐ_OLD とし、選択されたパラメータの最小値と最大値をプログラムメモリ２から読み出してそれぞれ最小値Ｖ_MIN と最大値Ｖ_MAX とする。さらに、読み出したパラメータの値をパラメータの現在値Ｖ_NOW とする。
【００３４】
図５には計算ルーチンのフローチャートが示される。この計算ルーチンはパラメータの上限値Ｖ_HIGHと下限値Ｖ_LOW 、基準値Ｖ_BAS などを算出し、これらの値に基づいて操作子６Ａの現在位置Ｐ_NOW に割り当てるパラメータの現在値Ｖ_NOW を計算し出力するための処理であり、操作子６Ａが操作されたとき、あるいは一定周期毎たとえば図示しないインターバルタイマにより発生されるインターバルクロックがＣＰＵ１に到来する毎に実行される。
【００３５】
まず、操作子６Ａの現在の操作位置を現在位置Ｐ_NOW とし（ステップＳ１）、この現在位置Ｐ_NOW が操作子６Ａの前回位置Ｐ_OLD と同じか否かを判定する（ステップＳ２）。同じである場合には、操作子６Ａがまだ操作されていないことを意味するので、この計算ルーチンを終了する。この場合、パラメータ値は変更されない。
【００３６】
操作子６Ａの現在位置Ｐ_NOW と前回位置Ｐ_OLD が異なる場合は（ステップＳ２）、パラメータ選択後から最初にこのルーチンが実行されるまでの間あるいはこのルーチンが前回実行されてから今回実行されるまでの間に前回操作子６Ａが操作されたことを意味する。この場合、現在のパラメータの値が現在値Ｖ_NOW に等しいかを判定する（ステップＳ３）。この処理は、パラメータ選択スイッチ６Ｂで選択したパラメータの値を操作子６Ａではなくパラメータ変更スイッチ６Ｃで変更した場合に、その変更後のパラメータ現在値が初期化ルーチンでセットしたパラメータ現在値Ｖ_NOW と不一致となるので、不一致であった場合に両者を一致させるためのものであり、不一致であった場合には操作方向ＤＲＣを「０」にするとともに、その不一致であったパラメータの現在値を現在値Ｖ_NOW にセットして両者を一致させる（ステップＳ４）。従って、ステップＳ３で両者が一致している場合にはステップＳ４の処理は飛び越す。
【００３７】
次いで、操作子６Ａの現在位置Ｐ_POS と前回位置Ｐ_OLD を比較する（ステップＳ５）。現在位置Ｐ_POS ＜前回位置Ｐ_OLD であれば操作子６Ａは下限方向に、現在位置Ｐ_POS ≧前回位置Ｐ_OLD であれば上限方向に操作されていると判断される。
【００３８】
下限方向に操作されていると判断された場合には、さらに操作方向ＤＲＣが「−１」かを判定する（ステップＳ６）。操作方向ＤＲＣが「−１」とは前回の計算サイクルにおいて操作子６Ａが下限方向へ操作されていたことを意味するから、操作子６Ａが前回に引き続いて下限方向に操作され続けていることを意味し、一方、操作方向ＤＲＣが「−１」でないとは前回の操作方向が停止（ＤＲＣ＝０）あるいは上限方向（ＤＲＣ＝１）であり、これに対して今回の操作方向が下限方向に変わったことを意味する。このように、操作方向が変わった場合には以下の各種データの再計算を行い、下限値Ｖ_LOW の設定を行う。
【００３９】
すなわち、
・操作方向ＤＲＣを「−１」にし、
・操作子６Ａの前回位置Ｐ_OLD の値を基準位置Ｐ_BAS とし、
・パラメータの現在値Ｖ_NOW の値を基準値Ｖ_BAS とし、
・操作子６Ａの基準位置比率Ｒ_POS を、
Ｒ_POS ＝（Ｐ_BAS −Ｐ _LOW ）／（Ｐ _HIGH −Ｐ _LOW ）
で求め、
・パラメータの基準値比率Ｒ_VAL を、
Ｒ_VAL ＝（Ｖ_BAS −Ｖ_MIN ）／（Ｖ_MAX −Ｖ_MIN ）
で求め、
・比率差ＤＦＦ_LOW を、
ＤＦＦ_LOW ＝Ｒ_VAL −Ｒ_POS
で求める（ステップＳ７）。
【００４０】
そして、比率差ＤＦＦ_LOW が０より大きいか判定する（ステップＳ８）。０以下の場合には、操作子６Ａの下限方向ストローク（すなわち、Ｐ_BAS →Ｐ_LOW のストローク）に対してパラメータの変化量（すなわち、Ｖ_BAS →Ｖ_MIN の変化量）が小さいことを意味しており、この場合には、操作子６Ａの操作量に対してパラメータが急激に変化する恐れはないので、操作子６Ａの下限位置Ｐ_LOW に割り当てるパラメータの下限値Ｖ_LOW をパラメータの最小値Ｖ_MIN の値とする（ステップＳ１０）。
【００４１】
一方、比率差ＤＦＦ_LOW が０より大きい場合（ステップＳ８）、操作子６Ａの操作量に対してパラメータが急激に変化する恐れがあることを意味しており、この場合には下限値Ｖ_LOW をパラメータの最小値Ｖ_MIN の値よりも大きい値とする（ステップＳ９）。この下限値Ｖ_LOW は、
Ｖ_LOW ＝ＤＦＦ_LOW ×Ｖ_BAS ＋（１−ＤＦＦ_LOW ）×Ｖ_MIN
により求める。
【００４２】
この下限値Ｖ_LOW の設定が終了した後、あるいは前出のステップＳ６で操作方向が変わってないと判定された時は、操作子６Ａの現在位置Ｐ_NOW に割り当てられるパラメータの現在値Ｖ_NOW を、以下の計算式により求める。
Ｖ_NOW ＝｛Ｖ_BAS ×（Ｐ_NOW −Ｐ _LOW ）＋Ｖ_LOW ×（Ｐ_BAS −Ｐ_NOW ）｝／（Ｐ_BAS −Ｐ _LOW ）
【００４３】
一方、操作子６Ａの現在位置Ｐ_POS と前回位置Ｐ_OLD を比較するステップＳ５において、現在位置Ｐ_POS ≧前回位置Ｐ_OLD すなわち上限方向に操作されていると判断された場合には、さらに操作方向ＤＲＣが「１」かを判定する（ステップＳ１２）。この判定の意味は前述のステップＳ８と同様であり、操作方向ＤＲＣが「１」であれば操作子６Ａが前回に引き続いて上限方向に操作され続けており、「１」でなければ今回の操作方向が上限方向に変わったものであることを意味し、操作方向が変わった場合には、上限値Ｖ_HIGHの設定を行う。
【００４４】
すなわち、
・操作方向ＤＲＣを「１」にし、
・操作子６Ａの前回位置Ｐ_OLD の値を基準位置Ｐ_BAS とし、
・パラメータの現在値Ｖ_NOW の値を基準値Ｖ_BAS とし、
・操作子６Ａの基準位置比率Ｒ_POS を、
Ｒ_POS ＝（Ｐ_BAS −Ｐ _LOW ）／（Ｐ _HIGH −Ｐ _LOW ）
で求め、
・パラメータの基準値比率Ｒ_VAL を、
Ｒ_VAL ＝（Ｖ_BAS −Ｖ_MIN ）／（Ｖ_MAX −Ｖ_MIN ）
で求め、
・比率差ＤＦＦ_HIGHを、
ＤＦＦ_HIGH＝Ｒ_POS −Ｒ_VAL
で求める（ステップＳ１３）。
【００４５】
そして、比率差ＤＦＦ_HIGHが０より大きいか判定する（ステップＳ１４）。０以下の場合には、操作子６Ａの上限方向ストローク（すなわち、Ｐ_BAS →Ｐ_HIGHのストローク）に対してパラメータの変化量（すなわち、Ｖ_BAS →Ｖ_MAX の変化量）が小さいことを意味しており、この場合には、操作子６Ａの操作量に対してパラメータが急激に変化する恐れはないので、操作子６Ａの上限位置Ｐ_HIGHに割り当てるパラメータの上限値Ｖ_HIGHをパラメータの最大値Ｖ_MAX の値とする（ステップＳ１６）。
【００４６】
一方、比率差ＤＦＦ_HIGHが０より大きい場合（ステップＳ１４）、操作子６Ａの操作量に対してパラメータが急激に変化する恐れがあることを意味しており、この場合には上限値Ｖ_HIGHをパラメータの最大値Ｖ_MAX の値よりも小さい値とする（ステップＳ１５）。この上限値Ｖ_HIGHは、
Ｖ_HIGH＝ＤＦＦ_HIGH×Ｖ_BAS ＋（１−ＤＦＦ_HIGH）×Ｖ_MAX
により求める。
【００４７】
この上限値Ｖ_HIGHの設定が終了した後、あるいは前出のステップＳ１２で操作方向が変わってないと判定された時は、操作子６Ａの現在位置Ｐ_NOW に割り当てられるパラメータの現在値Ｖ_NOW を、以下の計算式により求める。
Ｖ_NOW ＝｛Ｖ_BAS ×（Ｐ _HIGH −Ｐ_NOW ）＋Ｖ_HIGH×（Ｐ_NOW −Ｐ_BAS ）｝／（Ｐ _HIGH −Ｐ_BAS ）
【００４８】
この後、操作子６Ａの現在位置Ｐ_NOW を前回位置Ｐ_OLD とし、パラメータの現在値Ｖ_NOW の値を操作子６Ａから現在出力されるパラメータの値とする（ステップＳ１８）。
【００４９】
次に、前述の（２）の方法により上限値Ｖ_HIGHと下限値Ｖ_LOW を決める実施例について説明する。図６はこの場合の計算ルーチンを示すフローチャートである。初期化ルーチンは前述の図４のものと同じである。図６のフローチャートが１番目の実施例の図５のフローチャートと相違するところは、ステップＳ９とステップＳ１５の処理であり、その他のステップは同じものである。すなわち、この実施例では、操作子６Ａの操作が下限方向に変化した際に求める下限値Ｖ_LOW は、
Ｖ_LOW ＝Ｖ_BAS −Ｒ_POS ×（Ｖ_MAX −Ｖ_MIN ）
であり（ステップＳ９’）、一方、操作子６Ａの操作が上限方向に変化した際に求める上限値Ｖ_HIGHは、
Ｖ_HIGH＝Ｖ_BAS ＋（１−Ｒ_POS ）×（Ｖ_MAX −Ｖ_MIN ）
であり（ステップＳ１５’）、これにより前述の方法（２）で説明したような操作子６Ａの操作に対するパラメータの変化を得ることができる。
【００５０】
以上の実施例は、基準位置Ｐ_BAS を、パラメータ読出時の操作子６Ａの位置とその後の操作方向が反転した時の操作子６Ａの位置として、それぞれ上限値Ｖ_HIGH、下限値Ｖ_LOW を計算したが、本発明はこれに限られない。例えば、前述の特開平５−１３４６６６号公報に開示されているように、この基準位置Ｐ_BAS として前回の操作位置Ｐ_OLD を用い、常時、上限値Ｖ_HIGHと下限値Ｖ_LOW を計算し直し、それに応じてパラメータの現在値を求めるものであってもよい。
【００５１】
図７は上記の前回位置Ｐ_OLD を基準位置Ｐ_BAS とする場合の実施例のフローチャートであり、前述の方法（２）を用いて上限値Ｖ_HIGHと下限値Ｖ_LOW を計算するものである。この図７の実施例のフローチャートが図６の実施例のフローチャートと相違する点は、図６のフローチャートにおける操作方向ＤＲＣにより処理を変えるステップＳ６とＳ１２を削除し、これに伴って、ステップＳ４でＤＲＣ＝０とする処理を削除し、またステップＳ７とステップＳ１３における操作方向ＤＲＣの設定処理（ステップＳ７でのＤＲＣ＝−１、ステップＳ１３でのＤＲＣ＝１）をなくしていることであり、その他のステップは同じものである。
【００５２】
図８は上記の前回位置Ｐ_OLD を基準位置Ｐ_BAS とする場合の実施例のフローチャートであり、前述の方法（１）を用いて上限値Ｖ_HIGHと下限値Ｖ_LOW を計算するものである。この図８の実施例のフローチャートが図５の実施例のフローチャートと相違する点は、図５のフローチャートにおける操作方向ＤＲＣにより処理を変えるステップＳ６とＳ１２を削除し、これに伴って、ステップＳ４でＤＲＣ＝０とする処理を削除し、またステップＳ７とステップＳ１３における操作方向ＤＲＣの設定処理（ステップＳ７でのＤＲＣ＝−１、ステップＳ１３でのＤＲＣ＝１）をなくしていることであり、その他のステップは同じものである。なお、図４の初期化ルーチンにおいても、操作方向ＤＲＣの初期設定（ＤＲＣ＝０）は削除する。
【００５３】
以上に述べたものの他にも、本発明においては他の種々の実施形態が可能である。例えば、上述の実施例では操作子の操作量に対してパラメータの変化量が急激になるか否かを、比率差ＤＦＦ_HIGHまたはＤＦＦ_LOW が０より大きいか否かで判定したが、もちろんこれに限らず、０以上の所定値以上か否かで判定するよう構成することもでき、これによりパラメータの変化量がより急激になる時にだけ、上限値Ｖ_HIGHまたは下限値Ｖ_LOW を最大値Ｖ_MAX 以下の値または最小値Ｖ_MIN 以上の値に設定して、パラメータの急激な変化を抑えるようにすることができる。
【００５４】
また、下限値Ｖ_LOW または上限値Ｖ_HIGHの計算方法は上述の実施例のものに限られるものではなく、要は、操作子の操作量に対してパラメータの変化量が急激にならないように、下限値については最小値以上のある値、上限値については最大値以下のある値にすればよい。例えば、前述の実施例におけるステップＳ９またはステップＳ１５の計算を行う時に、比率差ＤＦＦ_LOW またはＤＦＦ_HIGHに所定の係数αを乗算して得た値を新たな比率差ＤＦＦ_LOW またはＤＦＦ_HIGHとしてそのステップの計算をするようなものであってもよい。
【００５５】
また、上述の実施例では、複数種類のパラメータの中からいずれかをパラメータ値修正用の操作子６Ａに割り当ててその値を修正する場合に関して説明したが、これに限られるものではなく、同じ種類のパラメータの値を複数種類プリセットしておき、その中から選択したものをパラメータ値修正用の操作子６Ａに割り当ててその値を修正する場合にも、本発明を適用できる。
また、実施例に示された計算式の計算をするにあたって、計算手順などを変形して実質的に同じ計算を行うものも本発明の範囲に含まれる。
【００５６】
また、図７または図８の実施例では、基準値Ｖ_BAS を前回値Ｖ_OLD としたが、これに限らず、前々回の値を基準値Ｖ_BAS としたり、前回値と前々回値の平均値を基準値Ｖ_BAS としたりすることも可能である。
【００５７】
【発明の効果】
以上に説明したように、本発明によれば、操作子を少し動かしただけでパラメータ値が大きく変化してしまう、すなわち操作子の操作量に対するパラメータ値の分解能が粗くなってしまうことを防止でき、これにより精密な調整が可能になり、また操作子の操作感を自然なものにできる。
【図面の簡単な説明】
【図１】本発明に係る一実施例としてのパラメータ値修正出力装置を搭載した電子楽器の全体構成を示す図である。
【図２】実施例装置における方法（１）により決定された上下限値に基づき操作子の操作位置に対応して出力されるパラメータ値の変化の様子を示す図である。
【図３】実施例装置における方法（２）により決定された上下限値に基づき操作子の操作位置に対応して出力されるパラメータ値の変化の様子を示す図である。
【図４】実施例装置における初期化ルーチンのフローチャートである。
【図５】実施例装置における方法（１）に従う計算ルーチンのフローチャートである。
【図６】実施例装置における方法（２）に従う計算ルーチンのフローチャートである。
【図７】他の実施例装置における方法（２）に従う計算ルーチンのフローチャートである。
【図８】他の実施例装置における方法（１）に従う計算ルーチンのフローチャートである。
【符号の説明】
１ ＣＰＵ（中央処理装置）
２ プログラムメモリ
３ ワークエリアメモリ
４ パラメータメモリ
５ 鍵盤装置
６ 操作子
６Ａ スライド形操作子
６Ｂ パラメータ選択スイッチ
６Ｃ パラメータ変更スイッチ
７ 表示器
８ 楽音発生装置
９ 音響装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a parameter value correction output device used for adjusting parameters and the like in an electronic apparatus such as an electronic musical instrument.
[0002]
Conventionally, for example, in an electronic musical instrument or the like, when it is desired to correct the value of some parameter that has already been set (for example, a preset parameter), the parameter is read and changed using an operator. For ease of operation, this controller is a slide-type or rotary-type resistor (spindle).LaIda andPoA tension meter or the like is often used. In this case, the problem is the correspondence between the operation position of the knob of the operating element at the time of correction and the read parameter value. That is, the operator is set by moving the knob between the lower limit end and the upper limit end, and the output from the operator is determined according to the operation position. On the other hand, the parameter values read out for correction are usually irrelevant to the position of the knob of the operating element at the time of reading, and there is no corresponding relationship between them.
[0003]
Therefore, as a conventional general method, after the parameter is read out, if the operator is operated to correct the value, the value of the read parameter at that time corresponds to the operation position of the operator. Thereafter, the value is adjusted to a desired value by the operation element. However, with this method, when the operator is first operated, the read parameter value suddenly changes to another value determined by the operator, making it difficult to grasp how the parameter changes. There is a problem that there is a sense of incongruity.
[0004]
As a method for coping with such a problem, the present applicant has proposed a parameter correction method disclosed in Japanese Patent Laid-Open No. 5-134666. This method assigns the read parameter value to the operation position of the operation element at the time of reading the parameter as the operation element output at that time, and when operating the operation element in the lower limit direction, for example, By operating the operation element with the stroke between the operation position and the lower limit position of the operation element, the operation position of the operation element and its output are changed so that the parameter value changes in the range between the read value and the minimum value. It is intended to correct the relationship.
[0005]
For example, when adjusting a parameter in the range of 0 to 100 with an operator that moves in an operation range of 0 to 100, if the read parameter value is 70 and the operation position of the operator at the time of reading is 30, When operating the operation element in the lower limit direction, the correspondence relationship is corrected so that the parameter value changes in the range of 70 to 0 with respect to the operation range of 30 to 0 of the operation element. Therefore, 70 is output as the parameter value when the operation position of the operation element is 30, 35 is output as the parameter value when the operation position of the operation element is operated to 15, and the parameter value is output when the operation position of the operation element is operated to 0. 0 is output as the value.
[0006]
[Problems to be solved by the invention]
According to the above-described method, by taking the correspondence between the read parameter value and the operation position of the operator at that time, the parameter value can be prevented from changing suddenly when the operator is operated. It becomes easy to understand how to change and eliminate the uncomfortable feeling of adjustment.
[0007]
However, even in this method, unnaturalness still remains when the read parameter value and the operation position of the operator at the time of reading are largely separated. For example, in the above example, assuming that the read parameter value is 80 and the operation position of the operator at that time is 10, the parameter value ranges from 0 to 80 with respect to the operation range of 0 to 10 of the operator. When the operation position of the operation element is 10, the parameter value is 80, and when the operation position is 5, the parameter value is 40. The parameter value changes greatly even if the operation element is moved a little. End up. That is, the resolution of the parameter value with respect to the operation amount of the operation element becomes coarse, and it becomes difficult to perform precise adjustment, resulting in an unnatural operation feeling.
[0008]
The present invention has been made in view of such a problem, and enables high-precision adjustment while maintaining a high resolution of the parameter value with respect to the operation amount of the operation element, and also makes the operation feeling unnatural. For the purpose.
[0009]
[Means and Actions for Solving the Problems]
In order to solve the above-described problem, the parameter value correction output device of the present invention assigns a parameter to an operator operable at an operation position between upper and lower limit positions, and sets the parameter value at the initial assignment of the parameter as the operation value. Corresponding as the parameter value output at the operation position before the operation of the child, the minimum parameter value that can be taken by the parameter is made to correspond as the parameter value that is outputted at the lower limit position of the operator, and the maximum parameter that the parameter can take A parameter value correction output device that associates a value as a parameter value to be output at the upper limit position of the operator and outputs a parameter value corresponding to the operation position after the operation of the operator in accordance with the correspondence relationship And the minimum value from the initial parameter value for the amount of change from the initial position of the operation element to the lower limit position of the operation element. When the amount of change up to the parameter value is larger than a predetermined value, the parameter value corresponding to the lower limit position of the operation element is set to a value larger than the minimum parameter value, and the operation is started from the position of the initial operation element. If the change amount from the initial parameter value to the maximum parameter value with respect to the change amount up to the upper limit position of the child is larger than a predetermined value, the parameter value corresponding to the upper limit position of the operator is set to the maximum value. A setting means for setting a value smaller than the parameter value, a parameter value corresponding to the initial position of the operation element, a parameter value corresponding to the lower limit position of the operation element set by the setting means, or the value of the operation element Determining means for determining a parameter value corresponding to the operation position after the operation of the operator based on the parameter value corresponding to the upper limit position according to the correspondence relationship; With was. Thereby, the change amount of the parameter with respect to the operation amount of the operation element can be suppressed to be small, so that the resolution with respect to the operation amount can be kept high.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an electronic musical instrument equipped with a parameter value correction output device as one embodiment according to the present invention. In FIG. 1, a CPU (central processing unit) 1 controls the entire electronic musical instrument. The program memory 2 comprises a ROM, and stores a control program for overall operation control and various data used when the program is executed. The work area memory 3 includes a RAM and is used as a work area for setting various register groups described later. The parameter memory 4 comprises a RAM and stores data necessary for generating musical sounds, such as envelope data for controlling the volume. The keyboard device 5 inputs pitch information, volume information and the like to the CPU 1 by a performance operation. The display 7 displays parameter values and the like as numerical values or graphics so that the adjustment can be performed. The musical tone generator 8 forms a musical tone signal by a method of reading a waveform memory or the like, and the acoustic device 9 includes an amplifier, a speaker, and the like, and emits a musical tone signal from the musical tone generator 8.
[0014]
The operation element 6 is used by the user to perform parameter setting and the like. In the figure, an operation element portion for setting the envelope of the musical tone signal is shown. The other operation elements are described in the present invention. Since it is not necessary for the explanation, the illustration is omitted. The operation element 6A is a slide-type operation element, and an output corresponding to the position of the knob can be taken out by sliding the knob continuously between the lower limit end LOW and the upper limit end HIGH.
[0015]
Reference numeral 6B denotes a parameter selection switch for selecting which part of the envelope waveform is adjusted when setting the envelope waveform of the musical sound signal. That is, the parameter selection switch 6B has four switches corresponding to the attack time A, decay time D, sustain level S, and release time R which are the four parameters constituting the envelope waveform, that is, attack time switch 6Ba, decay time switch 6Bd, It consists of a sustain level switch 6Bs and a release time switch 6Br. By pressing these switches, the corresponding parameters can be selected for data correction. The preset values (for example, preset values) of the parameters selected by these parameter selection switches 6B are displayed on the display unit 7, and the values are changed by operating the above-described operation element 6A. be able to.
[0016]
The parameter change switch 6C is for increasing or decreasing the value of the parameter selected and read by the parameter selection switch 6B irrespective of the operation position of the operation element 6A, and an up switch 6Cu for gradually increasing the parameter value. It comprises a down switch 6Cd for gradually decreasing.
[0017]
The CPU 1 detects which of these operators 6 has been operated, and executes an initialization routine and a calculation routine, which will be described in detail below, based on the operation information. The register group set in the work area 3 is for temporarily storing various data generated when the CPU 1 executes the control program stored in the program memory 2. The data (or registers) relevant to the present invention include the following. In the following description, the name of each register and its contents (data) are in principle represented by the same label name.
[0018]
(1) Current position P of the operator 6A_NOW: Current operation position of the operator 6A.
(2) Previous position P of the operator 6A_OLD: Operation position of the operator 6A in the previous calculation cycle.
(3) Reference position P of the operator 6A_BAS: The operation position at the time of reading the parameter of the operator 6A or the operation position when the operation direction in the subsequent operation is changed.
(4) Upper limit position P of the operator 6A_HIGH: The position of the upper limit HIGH of the operation of the operation element 6A.
(5) Lower limit position P of the operator 6A_LOW: The position of the lower limit end LOW of the operation of the operation element 6A.
[0019]
(6) Current parameter value V_NOW: Current position P of the operator 6A_NOWThe value of the parameter assigned to.
(7) Parameter reference value V_BAS: Reference position P of the operator 6A_BASThe value of the parameter assigned to. That is, the parameter value when the parameter is read or when the operating direction of the operation element 6A is changed.
(8) Maximum parameter value V_MAX: Maximum value that the selected parameter can take.
(9) Minimum parameter value V_MIN: The minimum value that the selected parameter can take.
(10) Upper limit value V of parameter_HIGH: Upper limit position P of the operator 6A_HIGHThe value of the parameter assigned to.
(11) Lower limit value V of parameter_LOW: Lower limit position P of the operator 6A_LOWThe value of the parameter assigned to.
[0020]
(12) Operation direction DRC of the operation element: Operation direction of the operation element 6A. The initial value is “0”, “+1” indicates an operation in the upper limit direction, and “−1” indicates an operation in the lower limit direction. . (13) Reference position ratio R of the operator 6A_POS: Full stroke of controller 6A (P_HIGH-P_LOW) For reference position P_BASRatio. That is,
R_POS= (P_BAS-P_LOW) / (P _HIGH -P _LOW )
The ratio required by.
(14) Parameter reference value ratio R_VAL: Entire parameter range (V_MAX-V_MIN) Reference value V_BASRatio. That is,
R_VAL= (V_BAS-V_MIN) / (V_MAX-V_MIN)
The ratio required by.
(15) Ratio difference DFF: Reference value ratio R_VALAnd reference position ratio R_POSAnd the difference. That is, when operating in the upper limit direction,
DFF_HIGH= R_POS-R_VAL
When operating in the lower limit direction,
DFF_LOW= R_VAL-R_POS
The value determined by.
[0021]
First, the operation of the apparatus of this embodiment will be schematically described. In this embodiment, in order to correct any parameter of the attack time A, decay time D, sustain level S, and release time R by the parameter selection switches 6Ba, 6Bd, 6Bs, 6Br in the operation element 6. The selected data is read out, and the read parameter value is displayed on the display unit 7 and the correction is made while viewing this display. The operation position of the operator 6A at the time of reading out the parameters is set as the reference position P._BASAnd its reference position P_BASFor the read parameter value V_BASAssign. Then, when the change of the parameter value is abrupt with respect to the operation amount when the operation element 6A is operated, specifically, for example, in the operation in the upper limit direction, the above-described ratio difference DFF_HIGH(= R_POS-R_VAL) Is positive, the upper limit position P of the operator 6A._HIGHParameter value to be assigned to the parameter maximum value V_MAXRather than the upper limit V of a value smaller than that_HIGHThus, the parameter value is prevented from abruptly changing with respect to the operation in the upper limit direction of the operation element 6A. That is, in the above case, the reference position P of the operation element_BASTo upper limit position P_HIGHParameter is the reference value V_BASTo upper limit V_HIGH(<Maximum value V_MAX) Will vary.
[0022]
When the operation direction of the operator 6A is changed halfway, the operation position at the time of the change is changed to a new reference position P._BAS, The parameter value at that time is changed to a new reference value V_BASBased on these values, this time, the lower limit value V in the reverse operation direction_LOWSet again. By repeating this operation for changing the operation direction, the upper limit value V of the parameter is eventually reached._HIGHIs the parameterBigValue V_MAXParameter lower limit V_LOWIs the minimum parameter value V_MINAnd the entire parameter range corresponds to the entire stroke of the operation element 6A.
[0023]
Upper limit V_HIGHOr lower limit V_LOWCan be determined in various ways. In short, the value may be determined so that the value of the parameter does not change rapidly with respect to the operation amount of the operation element 6A. Two examples are given below.
[0024]
(1) The first method is to use the reference position ratio R of the operator 6A._POSAnd parameter reference value ratio R_VALWhen the operation element 6A is operated in the upper limit direction, for example, the upper limit direction stroke (P _HIGH -P_BAS) For the amount of parameter change (V_MAX-V_BAS) X (1-DFF_HIGH), And when operating in the lower limit direction, the lower limit direction stroke (P_BAS-P _LOW ) For the amount of parameter change (V_BAS-V_MIN) X (1-DFF_LOW).
[0025]
A specific example will be described with reference to FIG. Now, the operation element 6A can be operated in the range of “0 to 1”, the parameter is set to a value in the range of “0 to 100”, the read parameter value is “10”, and the operation element 6A at the time of parameter reading is The position is “0.5”. Therefore, the reference position P_BASIs initially “0.5”, and as shown in FIG. 2A, the current position P of the operator 6A_NOW(= P_BASThe parameter value assigned to = 0.5) is “10”.
[0026]
From this state, the operation element 6A is operated in the upper limit direction. In this case, the upper limit is

Ask for. That is, the reference position ratio R of the operator_POSIs 50%, and the parameter reference value ratio R_VALIs 10%, so the ratio difference DFF_HIGHIs 40%, which is the maximum value V_MAXAnd reference value V_BASMultiplying the difference from “90” to find “36”, which is the maximum value V_MAX= By subtracting from 100, upper limit V_HIGH= 64 is determined. That is, the value of the parameter changes from “10” to “64” with respect to the operation from “0.5” to “1” of the operator 6A, and the parameter value is the maximum value V_MAXNo change until 100.
[0027]
Now, the current position P of the operator 6A_NOW2 is “0.75” between 0.5 and 1, as shown in FIG. 2B, the current value V of the parameter can be seen from the above ratio distribution._NOWBecomes “10+ (64−10) ÷ 2 = 37”. Current value P of operator 6A_NOWIs the upper limit position P as shown in FIG._HIGHParameter value is the upper limit value V_HIGH= 64. At this position, the operator 6A can be operated only in the lower limit direction. In the operation in the lower limit direction, the parameter value does not change rapidly with respect to the operation amount of the operation element 6A. In this case, the lower limit value V_LOWIs the minimum value V as in the above-mentioned JP-A-5-134666._MINAnd the parameter is changed to “64 → 0” with respect to the lower limit direction stroke “1 → 0”. Accordingly, as shown in FIG. 2D, the operation element 6A is moved to the lower limit direction at the current position P._NOWThe parameter value when operating up to 0.5 is half of the parameter change range of “64-0”, that is, “32”, and the operator 6A is moved to the lower limit position P as shown in FIG._LOWThe parameter value is “0” when operated to = 0. Thereafter, the upper limit value V of the parameter_HIGHIs the maximum value of the parameter V_MAXAnd the lower limit value V of the parameter_LOWIs the minimum parameter value V_MINSo that the entire range of parameters corresponds to the entire stroke of the operation element 6A.
[0028]
(2) The second method is a ratio difference DFF in the case of operation in the upper limit direction._HIGHIs positive, the upper limit V_HIGHThe
V_HIGH= V_BAS+ (1-R_POS) X (V_MAX-V_MIN)
In the case of operation toward the lower limit, the ratio difference DFF_LOWIs positive, the lower limit V_LOWThe
V_LOW= V_BAS-R_POS× (V_MAX-V_MIN)
It is a method. That is, the reference value V_BASFrom the reference position ratio R of the operation element 6A_POSAdd / subtract the parameter width according to the upper limit value V_HIGH, Lower limit V_LOWIt is what.
[0029]
A specific example will be described with reference to FIG. As described above, the operation element 6A can be operated in the range of “0 to 1”, the parameter is set to a value in the range of “0 to 100”, the read parameter value is “10”, and the operation element 6A at the time of parameter reading Is assumed to be “0.5”. Therefore, the reference position P_BASIs initially “0.5”, and as shown in FIG. 3A, the current position P of the operator 6A_NOW(= P_BASThe parameter value assigned to = 0.5) is “10”.
[0030]
From this state, the operation element 6A is operated in the upper limit direction. In this case, the upper limit V_HIGHIs
V_HIGH= V_BAS+ (1-R_POS) X (V_MAX-V_MIN)
= 10 + (1-0.5) × (100-0) = 60
Ask for. That is, the value of the parameter changes from “10” to “60” with respect to the operation from “0.5” to “1” of the operator 6A, and the maximum value V_MAXNo change until 100.
[0031]
Now, the current position P of the operator 6A_NOW3 is “0.75” between 0.5 and 1, as shown in FIG. 3B, the current value V of the parameter can be seen from the above ratio distribution._NOWBecomes “10+ (60−10) ÷ 2 = 35”. Current value P of operator 6A_NOWIs the upper limit position P as shown in FIG._HIGHParameter value is the upper limit value V_HIGH= 60. At this position, as in the case of the first method described above, the operation element 6A can be operated only in the lower limit direction. In the operation in the lower limit direction, the change in the parameter value does not rapidly decrease with respect to the operation amount of the operation element 6A. In this case, the lower limit value V_LOWIs the minimum value V as in the above-mentioned JP-A-5-134666._MINAnd the parameter is changed to “60 → 0” with respect to the lower limit direction stroke “1 → 0”. Accordingly, as shown in FIG. 3D, the operation element 6A is moved in the lower limit direction to the current position P._NOWThe parameter value when operating up to 0.5 is half of the parameter change range of “60 to 0”, that is, “30”. Further, as shown in FIG._LOWThe parameter value is “0” when operated to = 0. Thereafter, the upper limit value V of the parameter_HIGHIs the maximum parameter value V_MAXAnd the lower limit value V of the parameter_LOWIs the minimum parameter value V_MINSo that the entire range of parameters corresponds to the entire stroke of the operation element 6A.
[0032]
The detailed operation of the embodiment apparatus of the present invention will be described below with reference to the flowchart. First, the upper limit value V is determined by the method (1) described above._HIGHAnd lower limit V_LOWAn embodiment for determining the above will be described.
When any of the operators 6 is operated, the CPU 1 detects which of these operators 6 has been operated, and executes an initialization routine or a calculation routine described in detail below based on the operation information.
[0033]
FIG. 4 shows a flowchart of the initialization routine. This initialization routine is executed when the parameter selection switch 6B is operated and a parameter is selected, so that the type of parameter assigned to the operator 6A is changed. In this initialization routine, the operation direction DRC of the operator is set to “0”, and the current position of the operator 6A is set to the previous position P._OLDAnd read out the minimum value and maximum value of the selected parameter from the program memory 2 and set the minimum value V_MINAnd the maximum value V_MAXAnd Further, the read parameter value is changed to the current parameter value V._NOWAnd
[0034]
FIG. 5 shows a flowchart of the calculation routine. This calculation routine uses the parameter upper limit V_HIGHAnd lower limit V_LOWReference value V_BASAnd the current position P of the operator 6A is calculated based on these values._NOWCurrent value V of the parameter assigned to_NOWIs executed every time the operating element 6A is operated or every time an interval clock generated by an interval timer (not shown) arrives at the CPU 1.
[0035]
First, the current operation position of the operator 6A is set to the current position P._NOW(Step S1), the current position P_NOWIs the previous position P of the control 6A_OLD(Step S2). If they are the same, it means that the operator 6A has not been operated yet, so this calculation routine is terminated. In this case, the parameter value is not changed.
[0036]
Current position P of the operator 6A_NOWAnd the previous position P_OLDIs different (step S2), the last time the operator 6A was operated during the period from when the parameter was selected until this routine was first executed or from when this routine was last executed until this time. Means. In this case, the current parameter value is the current value V_NOW(Step S3). In this process, when the value of the parameter selected by the parameter selection switch 6B is changed by the parameter change switch 6C instead of the operator 6A, the parameter current value after the change is the parameter current value V set by the initialization routine._NOWTherefore, in the case of a mismatch, the operation direction DRC is set to “0”, and the current value of the parameter that did not match is set. Current value V_NOWTo match the two (step S4). Therefore, if both match at step S3, the process at step S4 skips.
[0037]
Next, the current position P of the operator 6A_POSAnd the previous position P_OLDAre compared (step S5). Current position P_POS<Previous position P_OLDIf so, the operating element 6A moves in the lower limit direction, and_POS≧ Previous position P_OLDIf so, it is determined that the operation is in the upper limit direction.
[0038]
If it is determined that the operation is in the lower limit direction, it is further determined whether the operation direction DRC is “−1” (step S6). When the operation direction DRC is “−1”, it means that the operation element 6A has been operated in the lower limit direction in the previous calculation cycle, so that the operation element 6A continues to be operated in the lower limit direction following the previous operation. On the other hand, if the operation direction DRC is not “−1”, the previous operation direction is stopped (DRC = 0) or the upper limit direction (DRC = 1), whereas the current operation direction is the lower limit direction. It means something has changed. Thus, when the operation direction changes, the following various data are recalculated and the lower limit V_LOWSet up.
[0039]
That is,
-Set the operation direction DRC to "-1"
-Previous position P of the operator 6A_OLDIs the reference position P_BASage,
・ Current parameter value V_NOWIs the reference value V_BASage,
-Reference position ratio R of the operator 6A_POSThe
R_POS= (P_BAS-P _LOW ) / (P _HIGH -P _LOW )
In
-Parameter reference value ratio R_VALThe
R_VAL= (V_BAS-V_MIN) / (V_MAX-V_MIN)
In
・ Ratio difference DFF_LOWThe
DFF_LOW= R_VAL-R_POS
(Step S7).
[0040]
And the ratio difference DFF_LOWIs determined to be greater than 0 (step S8). In the case of 0 or less, the lower limit direction stroke of the operator 6A (that is, P_BAS→ P_LOWThe amount of parameter change (ie V_BAS→ V_MINIn this case, there is no fear that the parameter will change abruptly with respect to the operation amount of the operation element 6A, and therefore the lower limit position P of the operation element 6A._LOWLower limit value V of parameter assigned to_LOWParameter minimum value V_MIN(Step S10).
[0041]
On the other hand, the ratio difference DFF_LOWIs larger than 0 (step S8), it means that the parameter may change rapidly with respect to the operation amount of the operation element 6A. In this case, the lower limit value V_LOWParameter minimum value V_MINIt is set to a value larger than the value of (step S9). This lower limit V_LOWIs
V_LOW= DFF_LOW× V_BAS+ (1-DFF_LOW) × V_MIN
Ask for.
[0042]
This lower limit V_LOWOr when it is determined in step S6 that the operation direction has not changed, the current position P of the operator 6A._NOWCurrent value V of the parameter assigned to_NOWIs obtained by the following calculation formula.
V_NOW= {V_BAS× (P_NOW-P _LOW ) + V_LOW× (P_BAS-P_NOW)} / (P_BAS-P _LOW )
[0043]
On the other hand, the current position P of the operator 6A_POSAnd the previous position P_OLDIn step S5 for comparing the current position P_POS≧ Previous position P_OLDThat is, when it is determined that the operation is in the upper limit direction, it is further determined whether the operation direction DRC is “1” (step S12). The meaning of this determination is the same as in step S8 described above. If the operation direction DRC is “1”, the operation element 6A continues to be operated in the upper limit direction following the previous operation. This means that the direction has changed to the upper limit direction. If the operation direction has changed, the upper limit value V_HIGHSet up.
[0044]
That is,
-Set the operation direction DRC to "1"
-Previous position P of the operator 6A_OLDIs the reference position P_BASage,
・ Current parameter value V_NOWIs the reference value V_BASage,
-Reference position ratio R of the operator 6A_POSThe
R_POS= (P_BAS-P _LOW ) / (P _HIGH -P _LOW )
In
-Parameter reference value ratio R_VALThe
R_VAL= (V_BAS-V_MIN) / (V_MAX-V_MIN)
In
・ Ratio difference DFF_HIGHThe
DFF_HIGH= R_POS-R_VAL
(Step S13).
[0045]
And the ratio difference DFF_HIGHIs determined to be greater than 0 (step S14). In the case of 0 or less, the upper limit direction stroke (that is, P_BAS→ P_HIGHThe amount of parameter change (ie V_BAS→ V_MAXIn this case, since there is no fear that the parameter will change suddenly with respect to the operation amount of the operation element 6A, the upper limit position P of the operation element 6A._HIGHUpper limit value of parameter assigned to V_HIGHParameter maximum value V_MAX(Step S16).
[0046]
On the other hand, the ratio difference DFF_HIGHIs greater than 0 (step S14), it means that the parameter may change rapidly with respect to the operation amount of the operator 6A. In this case, the upper limit value V_HIGHParameter maximum value V_MAXThe value is smaller than the value (step S15). This upper limit V_HIGHIs
V_HIGH= DFF_HIGH× V_BAS+ (1-DFF_HIGH) × V_MAX
Ask for.
[0047]
This upper limit V_HIGHOr when it is determined in step S12 that the operation direction has not changed, the current position P of the operator 6A_NOWCurrent value V of the parameter assigned to_NOWIs obtained by the following calculation formula.
V_NOW= {V_BAS× (P _HIGH -P_NOW) + V_HIGH× (P_NOW-P_BAS)} / (P _HIGH -P_BAS)
[0048]
Thereafter, the current position P of the operator 6A_NOWThe previous position P_OLDAnd the current parameter value V_NOWIs set to the value of the parameter currently output from the operator 6A (step S18).
[0049]
Next, the upper limit value V is determined by the method (2) described above._HIGHAnd lower limit V_LOWAn embodiment for determining the above will be described. FIG. 6 is a flowchart showing a calculation routine in this case. The initialization routine is shown above.4Is the same as Figure6Is a flowchart of the first embodiment5The difference from this flowchart is the processing of step S9 and step S15, and the other steps are the same. That is, in this embodiment, the lower limit value V obtained when the operation of the operator 6A changes in the lower limit direction._LOWIs
V_LOW= V_BAS-R_POS× (V_MAX-V_MIN)
On the other hand, the upper limit value V obtained when the operation of the operator 6A changes in the upper limit direction._HIGHIs
V_HIGH= V_BAS+ (1-R_POS) X (V_MAX-V_MIN)
(Step S15 '), and thus, it is possible to obtain a change in the parameter with respect to the operation of the operation element 6A as described in the above method (2).
[0050]
In the above embodiment, the reference position P_BASAs the position of the operating element 6A when the parameter is read and the position of the operating element 6A when the subsequent operating direction is reversed, respectively._HIGH, Lower limit V_LOWHowever, the present invention is not limited to this. For example, as disclosed in Japanese Patent Laid-Open No. 5-134666, the reference position P_BASAs the previous operation position P_OLDAlways use the upper limit V_HIGHAnd lower limit V_LOWMay be calculated again, and the current value of the parameter may be obtained accordingly.
[0051]
FIG. 7 shows the previous position P described above._OLDTo the reference position P_BASAnd the upper limit value V using the method (2) described above._HIGHAnd lower limit V_LOWIs calculated. This figure7The flowchart of this embodiment differs from the flowchart of the embodiment of FIG. 6 in that steps S6 and S12 that change the process according to the operation direction DRC in the flowchart of FIG. 6 are deleted, and accordingly, DRC = 0 in step S4. And the operation direction DRC setting process (DRC = −1 in step S7, DRC = 1 in step S13) in step S7 and step S13 is eliminated.IsThe same thing.
[0052]
FIG. 8 shows the previous position P described above._OLDTo the reference position P_BASAnd the upper limit value V using the method (1) described above._HIGHAnd lower limit V_LOWIs calculated. This figure8The flowchart of this embodiment differs from the flowchart of the embodiment of FIG. 5 in that steps S6 and S12 that change the process according to the operation direction DRC in the flowchart of FIG. 5 are deleted, and accordingly, DRC = 0 in step S4. And the operation direction DRC setting process (DRC = −1 in step S7, DRC = 1 in step S13) in step S7 and step S13 is eliminated, and the other steps are as follows: The same thing. Also in the initialization routine of FIG. 4, the initial setting of the operation direction DRC (DRC = 0) is deleted.
[0053]
In addition to what has been described above, various other embodiments are possible in the present invention. For example, in the above-described embodiment, it is determined whether the change amount of the parameter is abrupt with respect to the operation amount of the operation element._HIGHOr DFF_LOWHowever, the present invention is not limited to this. Of course, the determination can be made based on whether or not the predetermined value is not less than 0, and only when the change amount of the parameter becomes more abrupt. , Upper limit V_HIGHOr lower limit V_LOWIs the maximum value V_MAXThe following value or minimum value V_MINBy setting the above values, it is possible to suppress a rapid change in parameters.
[0054]
Also, the lower limit V_LOWOr upper limit V_HIGHThe calculation method is not limited to that of the above-described embodiment. In short, the lower limit value is a certain value that is greater than or equal to the minimum value so that the change amount of the parameter does not become abrupt with respect to the operation amount of the operator The upper limit value may be a certain value that is less than or equal to the maximum value. For example, when the calculation in step S9 or step S15 in the above-described embodiment is performed, the ratio difference DFF_LOWOr DFF_HIGHIs multiplied by a predetermined coefficient α to obtain a new ratio difference DFF_LOWOr DFF_HIGHIt is also possible to calculate the step as follows.
[0055]
In the above-described embodiment, a case has been described in which one of a plurality of types of parameters is assigned to the parameter value correcting operation element 6A and the value is corrected. However, the present invention is not limited to this. The present invention can also be applied to the case where a plurality of types of parameter values are preset, and one selected from them is assigned to the parameter value correcting operation element 6A to correct the value.
In addition, in calculating the calculation formulas shown in the embodiments, those that perform substantially the same calculation by modifying the calculation procedure and the like are also included in the scope of the present invention.
[0056]
In the embodiment of FIG. 7 or FIG. 8, the reference value V_BASIs the previous value V_OLDHowever, the present invention is not limited to this._BASOr the average of the previous value and the previous value is the reference value V_BASIt is also possible to do.
[0057]
【The invention's effect】
As described above, according to the present invention, it is possible to prevent the parameter value from changing greatly only by slightly moving the operation element, that is, the resolution of the parameter value with respect to the operation amount of the operation element from being coarsened. Thus, precise adjustment is possible, and the operation feeling of the operation element can be made natural.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of an electronic musical instrument equipped with a parameter value correction output device as one embodiment according to the present invention.
FIG. 2 is a diagram illustrating a change in a parameter value output corresponding to an operation position of an operator based on upper and lower limit values determined by the method (1) in the embodiment apparatus.
FIG. 3 is a diagram illustrating a change in a parameter value output corresponding to the operation position of the operator based on the upper and lower limit values determined by the method (2) in the embodiment apparatus.
FIG. 4 is a flowchart of an initialization routine in the embodiment apparatus.
FIG. 5 is a flowchart of a calculation routine according to the method (1) in the embodiment apparatus.
FIG. 6 is a flowchart of a calculation routine according to a method (2) in the embodiment apparatus.
FIG. 7 is a flowchart of a calculation routine according to the method (2) in another embodiment apparatus.
FIG. 8 is a flowchart of a calculation routine according to a method (1) in another embodiment apparatus.
[Explanation of symbols]
1 CPU (Central Processing Unit)
2 Program memory
3 Work area memory
4 Parameter memory
5 Keyboard device
6 Controller
6A Slide controller
6B Parameter selection switch
6C Parameter change switch
7 Display
8 Music generator
9 Audio equipment

Claims (1)

A parameter is assigned to an operator that can be operated at the operation position between the upper and lower limit positions, and the parameter value at the time of initial assignment of the parameter is made to correspond as a parameter value output at the operation position before the operation of the operator. The smallest possible parameter value is made to correspond as the parameter value output at the lower limit position of the operator, the largest possible parameter value of the parameter is made to correspond as the parameter value to be outputted at the upper limit position of the operator, A parameter value correction output device configured to output a parameter value corresponding to an operation position after the operation of the operator according to a correspondence relationship,
When the amount of change from the initial parameter value to the minimum parameter value with respect to the amount of change from the initial position of the operator to the lower limit position of the operator is greater than a predetermined value, the lower limit position of the operator The parameter value corresponding to is set to a value larger than the minimum parameter value, and from the initial parameter value to the maximum parameter value with respect to the amount of change from the initial control element position to the upper limit position of the operator Setting means for setting the parameter value corresponding to the upper limit position of the operating element to a value smaller than the maximum parameter value,
Based on the parameter value corresponding to the initial position of the operator and the parameter value corresponding to the lower limit position of the operator or the parameter value corresponding to the upper limit position of the operator set by the setting means A parameter value correction output device comprising: a determination unit that determines a parameter value corresponding to an operation position after the operation of the operator according to the relationship .

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