我是ices2和icecast2的新手，但确实设法建立了一个流，使我可以在耳塞中听到自己的声音。所以，该系统取得了一些基本的成功。现在，真正的目标：
我们希望使用 Zoom R16 录音机的音频接口功能流式传输 8 种不同的语言。通过arecord --dump-hw-params hw1,0在 R16 上执行，它返回：
Recording WAVE 'hw1,0' : Unsigned 8 bit, Rate 8000 Hz, Mono
HW Params of device "default":
--------------------
ACCESS: RW_INTERLEAVED
FORMAT: U8 S16_LE S16_BE S24_LE S24_BE S32_LE S32_BE FLOAT_LE FLOAT_BE MU_LAW A_LAW S24_3LE S24_3BE
SUBFORMAT: STD
SAMPLE_BITS: [8 32]
FRAME_BITS: [8 1024]
CHANNELS: [1 32]
RATE: [1 384000]
PERIOD_TIME: (2 4294967295)
PERIOD_SIZE: [1 1398102)
PERIOD_BYTES: [128 1398102)
PERIODS: [3 1024]
BUFFER_TIME: (7 4294967295]
BUFFER_SIZE: [3 4194304]
BUFFER_BYTES: [384 4194304]
TICK_TIME: ALL
--------------------
问题1：中间有空格的数字是什么意思SAMPLE_BITS: [8 32]？这是否意味着样本位可以是 8、16 或 32？
问题2：如何解决“EROR input-alsa/alsa_open_module Sample format not available: Invalid argument”
当我尝试启动ices2时，它就退出了，日志显示：
[2023-12-10 20:48:46] INFO ices-core/main IceS 2.0.3 started...
[2023-12-10 20:48:46] EROR input-alsa/alsa_open_module Sample format not available: Invalid argument
[2023-12-10 20:48:46] EROR input/input_loop Couldn't initialise input module "alsa"
[2023-12-10 20:48:46] INFO ices-core/main Shutdown complete
我用于ices2的配置文件是：
<?xml version="1.0"?>
<ices>
<!-- run in background --> <background>0</background>
<!-- where logs go. --> <logpath>/var/log/ices2</logpath>
<logfile>ices.log</logfile>
<!-- size in kilobytes --> <logsize>2048</logsize>
<!-- 1=error, 2=warn, 3=infoa ,4=debug --> <loglevel>4</loglevel>
<!-- logfile is ignored if this is set to 1 --> <consolelog>0</consolelog>
<!-- optional filename to write process id to --> <pidfile>/var/log/ices2/ices.pid</pidfile>
<stream>
<!-- metadata used for stream listing -->
<metadata>
<name>8 Languages</name>
<genre>Dharma Teaching</genre>
<description>Translation of 2024 International Spring Festival</description>
<url>http://localhost/</url>
</metadata>
<!-- Input module.
This example uses the 'alsa' module. It takes input from the
ALSA audio device (e.g. line-in), and processes it for live
encoding. -->
<input>
<module>alsa</module>
<param name="rate">48000</param>
<param name="channels">8</param>
<param name="device">hw:1,0</param>
<param name="periods">2</param>
<!-- Read metadata (from stdin by default, or -->
<!-- filename defined below (if the latter, only on SIGUSR1) -->
<param name="metadata">1</param>
<param name="metadatafilename">testES</param>
</input>
<!-- Stream instance.
You may have one or more instances here. This allows you to
send the same input data to one or more servers (or to different
mountpoints on the same server). Each of them can have different
parameters. This is primarily useful for a) relaying to multiple
independent servers, and b) encoding/reencoding to multiple
bitrates.
If one instance fails (for example, the associated server goes
down, etc), the others will continue to function correctly.
This example defines a single instance doing live encoding at
low bitrate. -->
<instance>
<!-- Server details.
You define hostname and port for the server here, along
with the source password and mountpoint. -->
<hostname>localhost</hostname>
<port>8000</port>
<password>hackme</password>
<mount>/spanish.ogg</mount>
<yp>1</yp> <!-- allow stream to be advertised on YP, default 0 -->
<!-- Live encoding/reencoding:
channels and samplerate currently MUST match the channels
and samplerate given in the parameters to the alsa input
module above or the remsaple/downmix section below. -->
<encode>
<quality>0</quality>
<samplerate>24000</samplerate>
<channels>8</channels>
</encode>
<!-- stereo->mono downmixing, enabled by setting this to 1 -->
<downmix>0</downmix>
<!-- resampling.
Set to the frequency (in Hz) you wish to resample to, -->
<resample>
<in-rate>48000</in-rate>
<out-rate>24000</out-rate>
</resample>
</instance>
</stream>
</ices>
但总的来说，我想知道的是：
问题 3：需要在配置文件中添加哪些内容，以便记录器的通道 1 可以作为西班牙语进行流式传输，通道 2 作为法语进行流式传输，通道 3 作为德语进行流式传输，...通道 8。我假设我实际上需要 8 个不同的配置文件并运行ices2的8个实例，但如何选择正确的通道？
编辑：我还可以说这适用于录制 8 通道 wav 文件：
arecord -D hw:1,0 -f S32_LE -r 48000 -c 8 testr16.wav