I2s using hifiberry dac pro raspberry 3

pistollero

Hello, i need some help. I m using hfberry dac pro i2s out to another dac but i have problems because i can only play 24 bit files or 32. 16 bit flac or wav i get white noise. How can i change mpd.conf to feed 24 bit? I tried by ssh but when i reboot it erases the line.

I was thinking if is a bug of the hifiberry driver or not.

PeteB

pistollero wrote...i can only play 24 bit files or 32. 16 bit flac or wav i get white noise. ...

Can you ex[plain this in a little more detail please?

List which files you tried, which files play, and which do not. Separately, not in one sentence. With that information, someone can probably help you.

pistollero

PeteB wrote
pistollero wrote...i can only play 24 bit files or 32. 16 bit flac or wav i get white noise. ...
Can you ex[plain this in a little more detail please?

List which files you tried, which files play, and which do not. Separately, not in one sentence. With that information, someone can probably help you.

Ok:
16 bit wav : white noise
16 bit flac : white noise

24 bit mp3: ok
24.192 flac: ok

If i use archphile and change mpd.conf to format to 24 bit or 24_3 or 32 everything plays ok.

So the problem is on 16 bit files.
but on rune i cannot change mpd.conf.

PeteB

Hi,

I would try to confirm what is actually being sent to your DAC when you get the white noise. Maybe you have done that already, but if not, look at the sound car hw parameters. The DAC will be card1 or card0 (not sure which it would be for you). So, one of these commands while playing should do it:

cat /proc/asound/card1/pcm0p/sub0/hw_params

cat /proc/asound/card0/pcm0p/sub0/hw_params

hondagx35

Hi pistollero,

I m using hfberry dac pro i2s out to another dac

Please give us a bit more details on that.

You can try:
- edit the file "/srv/http/db/redis_acards_details"
from

$redis->hSet('acards_details', 'snd_rpi_hifiberry_dacplus', '{"sysname":"snd_rpi_hifiberry_dacplus","extlabel":"HiFiBerry DAC+ (I&#178;S)","mixer_numid":"1","mixer_control":"Digital","hwplatformid":"01","type":"i2s"}');

$redis->hSet('acards_details', 'snd_rpi_hifiberry_dacplus', '{"sysname":"snd_rpi_hifiberry_dacplus","extlabel":"HiFiBerry DAC+ (I&#178;S)","mixer_numid":"1","card_option":"format\t\"*:32:*\"","mixer_control":"Digital","hwplatformid":"01","type":"i2s"}');

- execute these commands:

redis-cli del acards
php /srv/http/db/redis_acards_details

- reboot

pistollero

PeteB wroteHi,

I would try to confirm what is actually being sent to your DAC when you get the white noise. Maybe you have done that already, but if not, look at the sound car hw parameters. The DAC will be card1 or card0 (not sure which it would be for you). So, one of these commands while playing should do it:
cat /proc/asound/card1/pcm0p/sub0/hw_params

cat /proc/asound/card0/pcm0p/sub0/hw_params

access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels:2
rate: 44100 (352800/8)
period_size:4410
buffer_size: 22050

pistollero

hondagx35 wroteHi pistollero,

I m using hfberry dac pro i2s out to another dac

Please give us a bit more details on that.

You can try:
- edit the file "/srv/http/db/redis_acards_details"
from

$redis->hSet('acards_details', 'snd_rpi_hifiberry_dacplus', '{"sysname":"snd_rpi_hifiberry_dacplus","extlabel":"HiFiBerry DAC+ (I&#178;S)","mixer_numid":"1","mixer_control":"Digital","hwplatformid":"01","type":"i2s"}');

$redis->hSet('acards_details', 'snd_rpi_hifiberry_dacplus', '{"sysname":"snd_rpi_hifiberry_dacplus","extlabel":"HiFiBerry DAC+ (I&#178;S)","mixer_numid":"1","card_option":"format\t\"*:32:*\"","mixer_control":"Digital","hwplatformid":"01","type":"i2s"}');

- execute these commands:

redis-cli del acards
php /srv/http/db/redis_acards_details

- reboot

hi,
i did that and now it plays ok

pistollero

buttttt i still cannot play spotify.... on spotify i ear the same evil white noise

hondagx35

Hi,

pistollero wrotebuttttt i still cannot play spotify.... on spotify i ear the same evil white noise

Spotify doesn't use MPD, so the changes are not valid for Spotify.

I m using hfberry dac pro i2s out to another dac
Please give us a bit more details on that.

????

Frank

pistollero

Do you have any patch so i can listen to spotify?

pistollero

any help so i could listen to spotify? thks

rastus

pistollero wroteI m using hfberry dac pro i2s out to another dac....

From the HifiBerry DAC Pro out to an external DAC?
Using RCA connection?
Which external DAC?
Why not use a DIGI+ (not a DAC) as a transport (via coax or optical) out to your external DAC?

hondagx35

Hi rastus,

i asked him to be more specific on that multiple times.
It seems to be a secret, because he didn't answer.

Frank

pistollero

hondagx35 wroteHi rastus,

i asked him to be more specific on that multiple times.
It seems to be a secret, because he didn't answer.

Frank

No. The setup is hifiberry dac + pro using the i2s out to a akm4495 board.

pistollero

rastus wrote
pistollero wroteI m using hfberry dac pro i2s out to another dac....
From the HifiBerry DAC Pro out to an external DAC?
Using RCA connection?
Which external DAC?
Why not use a DIGI+ (not a DAC) as a transport (via coax or optical) out to your external DAC?

The hifiberry dac pro as an i2s out. I m only using the digital out of the dac.

hondagx35

Hi pistollero,

No. The setup is hifiberry dac + pro using the i2s out to a akm4495 board.

This is the missing piece of information.
Is it this board?

I didn't read the full datasheet.
Did you change the AK449 Audio I/F Format settings on the board?

Spotify (spopd) on Rune Audio outputs always 16/44.1.
The only way to change this is to modify alsa configuration.

Frank

pistollero

hondagx35 wroteHi pistollero,

No. The setup is hifiberry dac + pro using the i2s out to a akm4495 board.
This is the missing piece of information.
Is it this board?

I didn't read the full datasheet.
Did you change the AK449 Audio I/F Format settings on the board?

Spotify (spopd) on Rune Audio outputs always 16/44.1.
The only way to change this is to modify alsa configuration.

Frank

no. is this board from audiophonics: http://www.audiophonics.fr/en/diy-dac/diy-dac-akm-ak4495seq-i2s-p-10908.html

pistollero

how do i modify alsa? i would like to listening to spotify....
i have a big playlist to play:)

hondagx35

Hi,

did you already ask the audiophonics guys?

Frank

pistollero

hondagx35 wroteHi,

did you already ask the audiophonics guys?

Frank

yes Frank, but they don t know too. maybe this board is configured for receiving only 24 and 32 bit. on the other hand there is another thread here about someone with a sabre 9018 board that related the same problem with 16bit files so i was thinking this could be related to i2s code or driver...