我正在使用Gervill来创建带有乐器的音库。我已经为每个音高记录了一个样本，现在我想将这些样本放入一个乐器中。
到目前为止，我使用的文档是来自openjdk6源代码的测试。除此之外，我找到了卡尔·赫尔加森（Karl Helgason）的例子，这很有帮助。该示例将音频文件加载到音库中，但是每个乐器仅使用一个样本。我已经修改了他的示例文件，当我使用声音库进行重放时，似乎仅使用了一个样本并根据请求的音高进行了音高调整。相反，我想针对每个音高使用特定的样本。
我怀疑我的for循环是围绕该方法的错误部分构建的，另外一个示例正在覆盖以前保存的示例。
我的问题是每个样本应分别具有哪些部分：层？还是该地区？都？不幸的是，我发现Gervill的术语与from another one略有不同，所以我有些困惑。
我使用了以下源代码（我在更改后的源代码中保留了版权说明，我不是律师，因此不确定这样做是否正确。）：
/*
* 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;
}
}
编辑：我似乎一次听所有样本。它们是同时播放的，所以我才意识到以下几点：我只是在设置样本的原始音高，而在任何地方都没有设置范围，即，我没有将样本分配给某些Midi键。我在哪里可以做？
最佳答案
阅读一些Gervill源代码后，我自己找到了解决方案。使用GENERATOR_KEYRANGE可以定义特定样本的音调范围：
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);