Working Airplay with DAC Hifiberry and Soundclouf support

vinh

Hello!

It's would be nice if these features will be part of the next release.

Thanks,

hondagx35

Hello vinh,

Working Airplay with DAC Hifiberry and Soundclouf support

Airplay works perfect with all Hifiberry-DACs see here.

Frank

J@r0d

I have tested many conv USB/spdif and only hifiberry works fine with airplay, but with same conv i have no problem with volumio, i search a différence with 2 distrib

hondagx35

Hi J@r0d,

I have tested many conv USB/spdif and only hifiberry works fine with airplay,

What is your problem,
- no sound at all?
or
- bad sound quality?

J@r0d

With hifibery digi sound is good with airplay and external hdd or nas

With other conv USB>spdif sound is good with external hdd or nas but is distroded with airplay,

With distrib archphil or volumio the sound is good with airplay and conv USB>SPDIF

Tested with other kernel and all profil, but same problem sound is distorded

J@r0d

I have buy RPI 2 and i have tested with two conv USB>Spdif and USB>Aes and same probleme with airplay

I have tested with two ipad mini one on IOS7 and one with IOS8, same problem

hondagx35

Hi J@r0d,

this sounds that there are issues with the samplerate.

The default alsa sample rate is normally 48kHz. Since shairport outputs 44.1 kHz alsa resamples the shairport output to 48kHz which may have a negative effect with some sound cards.

Try to edit /usr/share/alsa/alsa.conf

defaults.pcm.dmix.rate 44100

(default is 48000)

An other thing you can try is to play with shairport buffer sizes (-b option).
Try to edit /usr/lib/systemd/system/shairport.service

ExecStart=/usr/bin/shairport -w --name=RuneAudio --on-start=$ON --on-stop=$OFF --meta-dir=/var/run/shairport -b 95 -o alsa -- -d hw:1,0

Something like 95 should be a good starting point.

Do not forget to reboot your system after changing the settings.

Frank

J@r0d

Thanks you, i go test today

But is strange, when i use airplay with hifiberrydigi i have no problem, when i use airplay with interface USB i have problem

J@r0d

Is not OK

I have resintall 0.3 fresh installl

I launch local flac with usbkey with hifiberry digi>>>>sound is ok

I launch local flac with usbkey with conv USB>AES Musical fidelity>>>>sound is ok and led of my conv USB/AE indicate 44.1

I launch with airplay youtube or deezer with hifiberry digi>>>>sound is ok

I launch with airplay youtube or deezer with conv USB>AES Musical fidelity>>>>sound is distorded ok and led of my conv USB/AE indicate 44.1

If i modify alsa.conf and shairport.service same problem

I have same tested after update with git 0.4 dev branch ans same problem

I have install same version shairport of volumio in runeaudio and same problem

J@r0d

I have many many test and airplay doesn't work with usb convertisser

I change sampl rate 48000 for 44100 same problem

What is the route of audio flux when use airplay ? If i modify sample rate in mdp.conf for 96000 when i play with shairport the sample rate is not affected, when i play a local music in sdcard the sample rate out is 96000, if i modify samplerate in alsa.conf for 48000 or 96000 the sample rate with airplay is 44100 in out

The only condition for use airplay without disortion is when i use digi+