[AudioI] No sound in icecast2 stream
Phillip Fox
phill at phillfox.net
Sat Apr 22 14:33:46 UTC 2023
Thank you again Derm,
I reviewed several of your blog posts without any luck, then decided to remove my AudioInjector Stereo hat and reinstall it. After booting I was able to hear very quiet audio with some distortion from my stream.
I tried adjusting some of the levels using 'alsamixer', but that didn't seem to help. I ran the "asound.state.MIC.thru.test" script and could hear audio from the onboard mic after a reboot. I reran the "asound.state.RCA.thru.test" script and since then I haven't heard any more audio. I've tried connecting to both the RCA and the headphone port. I've messed with so many settings with the 'amixer' commands, and have verified that they took affect in 'alsamixer'.
I'm familiar with linux OSs, but new to audio on linux.
I feel like I'm close but missing something obvious, here are some details from my current config. If anyone can point me in the right direction I'd really appreciate it.
I'm running the light version Raspberry PI OS version of Debian Bullseye, so command line only, on a Compute Module 4 board. Would the full UI provide more options? My compute module board has 2 HDMI ports, so my AudioInjector card's card id is 2.
When I run 'arecord' I get the following output (the output starts at 99% then immediatly drops to 13% and stays there even with no record playing):
*~ $** arecord -D 'hw:CARD=audioinjectorpi,DEV=0' -vv -f dat /dev/null*
Recording WAVE '/dev/null' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
Hardware PCM card 2 'audioinjector-pi-soundcard' device 0 subdevice 0
Its setup is:
stream : CAPTURE
access : RW_INTERLEAVED
format : S16_LE
subformat : STD
channels : 2
rate : 48000
exact rate : 48000 (48000/1)
msbits : 16
buffer_size : 24000
period_size : 6000
period_time : 125000
tstamp_mode : NONE
tstamp_type : MONOTONIC
period_step : 1
avail_min : 6000
period_event : 0
start_threshold : 1
stop_threshold : 24000
silence_threshold: 0
silence_size : 0
boundary : 6755399441055744000
appl_ptr : 0
hw_ptr : 0
#######+ | 13%
Here is the 'AlsaMixer' view:
And the 'amixer' output:
*~ $** amixer -c 2*
Simple mixer control 'Master',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 127
Mono:
Front Left: Playback 127 [100%] [6.00dB]
Front Right: Playback 127 [100%] [6.00dB]
Simple mixer control 'Master Playback ZC',0
Capabilities: pswitch
Playback channels: Front Left - Front Right
Mono:
Front Left: Playback [on]
Front Right: Playback [on]
Simple mixer control 'Sidetone',0
Capabilities: pvolume pvolume-joined
Playback channels: Mono
Limits: Playback 0 - 3
Mono: Playback 3 [100%] [-6.00dB]
Simple mixer control 'Line',0
Capabilities: cswitch
Capture channels: Front Left - Front Right
Front Left: Capture [off]
Front Right: Capture [off]
Simple mixer control 'Mic',0
Capabilities: cswitch cswitch-joined
Capture channels: Mono
Mono: Capture [off]
Simple mixer control 'Mic Boost',0
Capabilities: volume volume-joined
Playback channels: Mono
Capture channels: Mono
Limits: 0 - 1
Mono: 1 [100%] [20.00dB]
Simple mixer control 'Playback Deemphasis',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Capture',0
Capabilities: cvolume
Capture channels: Front Left - Front Right
Limits: Capture 0 - 31
Front Left: Capture 31 [100%] [12.00dB]
Front Right: Capture 31 [100%] [12.00dB]
Simple mixer control 'ADC High Pass Filter',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Input Mux',0
Capabilities: enum
Items: 'Line In' 'Mic'
Item0: 'Line In'
Simple mixer control 'Output Mixer HiFi',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Output Mixer Line Bypass',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Output Mixer Mic Sidetone',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'Store DC Offset',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Thanks to anyone who can help!
Phill
On Thu, Apr 13, 2023, at 6:57 AM, Diarmuid via People wrote:
> You can use arecord as a sound meter to see what sound you are capturing at the mic
>
> Testing a soundcard <https://rpisounds.wordpress.com/2020/08/02/testing-a-soundcard/>
> rpisounds.wordpress.com <https://rpisounds.wordpress.com/2020/08/02/testing-a-soundcard/>
> webclip.png <https://rpisounds.wordpress.com/2020/08/02/testing-a-soundcard/>
>
>
> Sent from my iPhone
>
>> On 8 Apr 2023, at 13:00, people-request at lists.audioinjector.net wrote:
>> Hello all,
>> I'm trying to setup a local icecast stream using a Raspberry PI CM4 installed on the Compute Module 4 IO Board with the AudioInjector Stero card installed.
>>
>> I think I've configured the card as outlined in github and I think I have darkice and icecast running properly because they are generating a stream, but there is no sound in the stream.
>>
>> I think the problem might be with the device I've configured as my source. Running aplay -L I get the following output:
>> hw:CARD=audioinjectorpi,DEV=0
>>
>> audioinjector-pi-soundcard, AudioInjector audio wm8731-hifi-0
>>
>> Direct hardware device without any conversions
>>
>> plughw:CARD=audioinjectorpi,DEV=0
>>
>> audioinjector-pi-soundcard, AudioInjector audio wm8731-hifi-0
>>
>> Hardware device with all software conversions
>>
>> sysdefault:CARD=audioinjectorpi
>>
>> audioinjector-pi-soundcard, AudioInjector audio wm8731-hifi-0
>>
>> Default Audio Device
>>
>> dmix:CARD=audioinjectorpi,DEV=0
>>
>> audioinjector-pi-soundcard, AudioInjector audio wm8731-hifi-0
>>
>> Direct sample mixing device
>>
>> hw:CARD=vc4hdmi0,DEV=0
>>
>> vc4-hdmi-0, MAI PCM i2s-hifi-0
>>
>> Direct hardware device without any conversions
>>
>> plughw:CARD=vc4hdmi0,DEV=0
>>
>> vc4-hdmi-0, MAI PCM i2s-hifi-0
>>
>> Hardware device with all software conversions
>>
>> sysdefault:CARD=vc4hdmi0
>>
>> vc4-hdmi-0, MAI PCM i2s-hifi-0
>>
>> Default Audio Device
>>
>> hdmi:CARD=vc4hdmi0,DEV=0
>>
>> vc4-hdmi-0, MAI PCM i2s-hifi-0
>>
>> HDMI Audio Output
>>
>> dmix:CARD=vc4hdmi0,DEV=0
>>
>> vc4-hdmi-0, MAI PCM i2s-hifi-0
>>
>> Direct sample mixing device
>>
>> hw:CARD=vc4hdmi1,DEV=0
>>
>> vc4-hdmi-1, MAI PCM i2s-hifi-0
>>
>> Direct hardware device without any conversions
>>
>> plughw:CARD=vc4hdmi1,DEV=0
>>
>> vc4-hdmi-1, MAI PCM i2s-hifi-0
>>
>> Hardware device with all software conversions
>>
>> sysdefault:CARD=vc4hdmi1
>>
>> vc4-hdmi-1, MAI PCM i2s-hifi-0
>>
>> Default Audio Device
>>
>> hdmi:CARD=vc4hdmi1,DEV=0
>>
>> vc4-hdmi-1, MAI PCM i2s-hifi-0
>>
>> HDMI Audio Output
>>
>> dmix:CARD=vc4hdmi1,DEV=0
>>
>> vc4-hdmi-1, MAI PCM i2s-hifi-0
>>
>> Direct sample mixing device
>>
>>
>> I've tried using the following device options in my darkice config with no luck:
>> hw:CARD=audioinjectorpi,DEV=0
>>
>> plughw:CARD=audioinjectorpi,DEV=0
>>
>> sysdefault:CARD=audioinjectorpi
>>
>>
>> I've used a headphone line out from my phone and from a small amp (which is plugged into a pre-amp) using both the RCA and the headphone line in.
>>
>> Is one of those listed devices the right option, or is there something else I can do to test the problem?
>>
>> Thanks for any help!
>> Phil Fox
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