我有一个技嘉 GA-H170N-WIFI我想用它作为家庭音响系统的基础主板。它有两个 HDMI 输出和 5.1 模拟音频输出。
问题是，如何找出声卡/子系统支持多少个独立音频通道？我真的可以让每个 HDMI 输出有 8 个独立音频通道，再加上 6 个模拟通道（更不用说 S/PDIF 输出上最多 8 个通道）同时运行，发送不同的信号？此外，是否有可能说服 PulseAudio“拆分”HDMI 音频通道并将它们提供为 8 个独立接收器？
谢谢！
更新：我的/proc/asound/card0/codec#2
Codec: Intel Skylake HDMI
Address: 2
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x80862809
Subsystem Id: 0x80860101
Revision Id: 0x100000
No Modem Function Group found
Default PCM:
rates [0x0]:
bits [0x0]:
formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
Power states: D0 D3 CLKSTOP EPSS
Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=0, channel=0
Digital: Enabled KAE
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1a]: 16 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=0, channel=0
Digital: Enabled KAE
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1a]: 16 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x04 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=0, channel=0
Digital: Enabled KAE
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1a]: 16 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x05 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x0b000094: OUT Detect HBR HDMI DP
Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Devices: 0
Connection: 3
0x02* 0x03 0x04
Node 0x06 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x0b000094: OUT Detect HBR HDMI DP
Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Devices: 0
Connection: 0
In-driver Connection: 3
0x02 0x03 0x04
Node 0x07 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x0b000094: OUT Detect HBR HDMI DP
Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Devices: 0
Connection: 0
In-driver Connection: 3
0x02 0x03 0x04
Node 0x08 [Vendor Defined Widget] wcaps 0xf00000: Mono
答案1
根据编解码器信息，您有 3 个转换器节点（接受数字数据流），每个节点 8 个通道，以及 3 个引脚节点（连接到显卡以将声音流嵌入 HDMI）。
所以你的硬件确实能够支持每个 HDMI 8 个通道加上 6 个模拟通道（除非 HDA 声卡有带宽限制，但我猜你必须尝试一下），它甚至可以为另一个 HDMI 输出提供额外的 8 个通道如果你有体力输出的话。
不过，在 Pulseaudio 的两个 HDMI 通道上设置同时输出可能有点令人头疼。/usr/share/pulseaudio/alsa-mixer/如果您确实打算这样做，您可能需要修改配置文件集。
您可以在 Pulseaudio 中使用以下命令轻松地将通道拆分为附加接收器模块重映射接收器模块。