| bufferLength | 环形缓冲区中每个缓冲区的长度。 |
| numBuffers | 缓冲区数。 |
获取混合器的缓冲区大小，以样本数为单位。
对于移动设备（iOS 设备和 Android），也可以从菜单 Audio Settings > Mobile DSP Buffer size 进行设置。 软件混合器将声音混合到一个环形缓冲区。该环形缓冲区的大小在此确定。它在每个 bufferlength 数量的样本中混合一个声音数据块，共有 numbuffers 个这种声音数据块，它们构成整个环形缓冲区。 调整这些值可能会导致极低的延迟性能（较小的值）或更高的声音输出稳定性（较大的值）。 警告！通常情况下，请勿更改 buffersize。减小粒度只会增加 CPU 使用率（缓存未命中和 DSP 网络开销）。 增大粒度会影响命令更新的频率，例如音量/音高/平移变化。 高于 20ms 的任何声响都会变得明显，声音参数更改将变得突兀、不平滑。 默认情况下，Unity 选择最佳大小来提供最好的稳定性，具体取决于输出类型，以及是否为模拟驱动程序（例如，在 NT 上使用 waveOut 模拟 DirectSound）。 若非实有必要，不建议更改该值。否则，您可能会获得比 Unity 选择的默认设置更差的性能。 从版本 5.0 开始，不再支持通过脚本设置 DSP 缓冲区大小。要进行该项设置，必须在项目设置的 Audio 部分中进行。
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