將多種樣品添加到Gervill SF2Soundbank中的一台儀器中

Question

我正在使用Gervill來創建帶有樂器的音庫。 我已經為每個音高記錄了一個樣本，現在我想將這些樣本放入一個樂器中。 到目前為止，我使用的文檔是來自openjdk6源代碼的測試。 除此之外，我找到了卡爾·赫爾加森（Karl Helgason）的例子，這很有幫助。 該示例將音頻文件加載到音庫中，但是每個樂器僅使用一個樣本。 我已經修改了他的示例文件，當我使用聲音庫進行重放時，似乎僅使用了一個樣本並根據請求的音高進行了音高調整。 相反，我想針對每個音高使用特定的樣本。 我懷疑我的for循環是圍繞該方法的錯誤部分構建的，並且另外一個示例正在覆蓋以前保存的示例。

我的問題是每個樣本應分別具有哪些部分：層？ 還是該地區？ 都？ 不幸的是，Gervill術語似乎與我發現的另一術語略有不同，因此我有些困惑。

我使用了以下源代碼（我在更改后的源代碼中保留了版權說明，我不是律師，因此不確定這樣做是否正確。）：

/*
 * Copyright (c) 2007 by Karl Helgason
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package midiplay;

    import com.sun.media.sound.*;
    import java.io.File;
    import java.io.IOException;
    import javax.sound.midi.Patch;
    import javax.sound.sampled.*;

    public class MakeSoundfont {

        public SF2Soundbank CreateSoundbank()
                throws UnsupportedAudioFileException, IOException {

            SF2Soundbank sf2 = new SF2Soundbank();

            String[] fnames = new String[]{"C.wav", "Cs.wav", "D.wav", "Ds.wav"};

            SF2Layer layer = new SF2Layer(sf2);
            layer.setName("fname Layer");
            sf2.addResource(layer);


            int i = 0;
            for (String fname : fnames) {

                File audiofile = new File("./" + fname);
                AudioInputStream audiostream = AudioSystem
                        .getAudioInputStream(audiofile);

                AudioFormat format = new AudioFormat(audiostream.getFormat()
                        .getSampleRate(), 16, 2, true, false);
                AudioInputStream convaudiostream = AudioSystem.getAudioInputStream(
                        format, audiostream);

                /*
                 * Read the content of the file into a byte array.
                 */

                int datalength = (int) convaudiostream.getFrameLength()
                        * format.getFrameSize();
                byte[] data = new byte[datalength];
                convaudiostream.read(data, 0, data.length);
                audiostream.close();

                /*
                 * Create SoundFont2 sample.
                 */

                SF2Sample sample = new SF2Sample(sf2);
                sample.setName(fname);
                sample.setData(data);
                sample.setSampleRate((long) format.getSampleRate());
                sample.setOriginalPitch(60 + i);
                sf2.addResource(sample);
                i++;

                /*
                 * Create region for layer.
                 */
                SF2LayerRegion region = new SF2LayerRegion();
                region.putInteger(SF2Region.GENERATOR_RELEASEVOLENV, 12000);
                region.setSample(sample);

                layer.getRegions().add(region);
            }

            /*
             * Create SoundFont2 instrument.
             */
            SF2Instrument ins = new SF2Instrument(sf2);
            ins.setName("Back Instrument");
            ins.setPatch(new Patch(0, 0));
            sf2.addInstrument(ins);

            /*
             * Create region for instrument.
             */
            SF2InstrumentRegion insregion = new SF2InstrumentRegion();
            insregion.setLayer(layer);
            ins.getRegions().add(insregion);

            return sf2;

        }
    }

編輯：我似乎一次聽所有樣本。 它們是同時播放的，所以我才意識到以下幾點：我只是在設置樣本的原始音高，但是在任何地方都沒有設置范圍，即，我沒有將樣本分配給某些Midi鍵。 我在哪里可以做？

Answer 1

閱讀一些Gervill源代碼后，我自己找到了解決方案。 使用GENERATOR_KEYRANGE可以定義特定樣本的音調范圍：

        SF2LayerRegion region = new SF2LayerRegion();
        region.putInteger(SF2Region.GENERATOR_RELEASEVOLENV, 12000); 
        region.putBytes(SF2Region.GENERATOR_KEYRANGE, new byte[]{(byte)(60+i),(byte)(60+i)});
        i++;
        region.setSample(sample);
        layer.getRegions().add(region);