有个弄不明白的地方，有高手教教吗？
在本务机驾驶室内，启动马达和怠速音效好小声，但AI车被堵住时，AI车怠速音效就很大声，盖过本务机怠速音效，（注：这两种音效的音量我已用软件调为一致）
英文太差，不知道是以下语句调整音量吗？？？？
sound_engine_data: .idle
{
name: "/sound/truck/ext/idle_2.ogg"
looped: true
min_frequency: 0.45
max_frequency: 0.65
min_rpm: 100.0
max_rpm: 700.0
}
sound_engine_data: .tick
{
name: "/sound/truck/ext/tick_3b.ogg"
looped: true
min_frequency: 0.5
max_frequency: 1.4
min_rpm: 800.0
max_rpm: 2800.0
}
sound_engine_data: .low
{
name: "/sound/truck/ext/low_03.ogg"
looped: true
min_frequency: 0.5
max_frequency: 1.5
min_rpm: 500.0
max_rpm: 3000.0
}
sound_engine_data: .high
{
name: "/sound/truck/ext/high_4.ogg"
looped: true
min_frequency: 0.5
max_frequency: 1.8
min_rpm: 600.0
max_rpm: 3000.0
}
English
