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doc:appunti:hardware:raspberrypi_nas_audio [2021/03/10 15:37] – created niccolodoc:appunti:hardware:raspberrypi_nas_audio [2021/03/18 10:44] – niccolo
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 For the **hardware** part, you can use the **digital HDMI audio** or the **analog 3.5 mm jack** (which carries video and stereo audio signals over a CTIA 4 poles connector). For a **better audio quality** you have to connect and **audio hat** or an external **USB audio sound card**; as explained below the integrated audio devices are of unacceptable quality also for an occasional user, let alone an audiophile one! For the **hardware** part, you can use the **digital HDMI audio** or the **analog 3.5 mm jack** (which carries video and stereo audio signals over a CTIA 4 poles connector). For a **better audio quality** you have to connect and **audio hat** or an external **USB audio sound card**; as explained below the integrated audio devices are of unacceptable quality also for an occasional user, let alone an audiophile one!
  
-===== Audio hardware: Raspberry Pi 4 =====+===== Pi 4 audio hardware ===== 
 + 
 +There are several possibilities of getting audio from a Raspberry Pi 4. 
  
 ==== Digital audio through HDMI ==== ==== Digital audio through HDMI ====
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 ==== Using an externa USB sound card ==== ==== Using an externa USB sound card ====
  
 +{{ .:raspberrypi:raspberry-pi-usb-audio-cable.jpg?180|USB sound card with RCA connectors and cable}}
 For a decent audio quality, I decided that  the only acceptable solution is to relay on an external USB sound card connected to my stereo amplifier. I choosed a model based on the **C-Media Electronics** chip (USB Id **0d8c:0024**), which comes with two standard RCA connectors. The device is compatible with ALSA so the Pulseaudio system can select it per default, setting the following in **/etc/pulse/client.conf**: For a decent audio quality, I decided that  the only acceptable solution is to relay on an external USB sound card connected to my stereo amplifier. I choosed a model based on the **C-Media Electronics** chip (USB Id **0d8c:0024**), which comes with two standard RCA connectors. The device is compatible with ALSA so the Pulseaudio system can select it per default, setting the following in **/etc/pulse/client.conf**:
  
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   * **[[https://superuser.com/questions/1274901/systemd-forking-vs-simple/|systemd forking vs simple?]]**   * **[[https://superuser.com/questions/1274901/systemd-forking-vs-simple/|systemd forking vs simple?]]**
  
-==== Use PulseAudio with Kodi ====+===== Use PulseAudio with Kodi =====
  
 With the PulseAudio running as a system service, you can start Kodi and go to **Settings** => **System** => **Audio** = **Audio output device** and select **PULSE: Default**. Here you can also switch between HDMI and stereo jack: With the PulseAudio running as a system service, you can start Kodi and go to **Settings** => **System** => **Audio** = **Audio output device** and select **PULSE: Default**. Here you can also switch between HDMI and stereo jack:
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 The **mpd** user must be addedd to the relevant groups: **audio**, **pulse** and **pulse-access**.  The **mpd** user must be addedd to the relevant groups: **audio**, **pulse** and **pulse-access**. 
  
 +===== Web References =====
 +
 +  * **[[https://kodi.wiki/view/PulseAudio|Kodi with PulseAudio]]**
 +  * **[[https://gist.github.com/bheisig/bf1a13a05cdb6a12ee805b00dc6d90bb|PulseAudio for Kodi, MPD and remote access on a Ubuntu host]]**
  
doc/appunti/hardware/raspberrypi_nas_audio.txt · Last modified: 2021/03/22 09:27 by niccolo