(05-24-2018, 09:38 PM)e11bits Wrote: Hi!

I experience a very loud peak noise between two songs playing from a playlist on an USB-Stick. It does not happen all the time, but quite often. This is not just an annoying click, but it is so loud that it makes me jump.

I checked the mp3 files and they seem to be fine.

I appreciate the sound quality with moode, but this makes it unusable for me. I hope there is a solution to this problem.
  
Here is the info about my installation (please let me know if you need more):

Release Information

• Release: 4.1 2018-04-02 View relnotes
  
• Update: (None)
  

Platform Information

• Raspbian ver: 9.4
  
• Linux kernel: 4.14.32-v7+, armv7l
  
• Hdwr revision: Pi-3B 1GB v1.2
  
• MPD version: 0.20.18
  
  

DSP OPERATIONS
Resampling: off
Crossfeed: off
Equalizer: Graphic EQ: (Hi-Lo Boost), Parametric EQ: (off}
Crossfade: 10 seconds
Other: Volume normalize (no}, Replaygain (off)
Chip options: FIR interpolation with de-emphasis, gain=0 dB, boost=0 dB
Volume ctl: Software (MPD 32-bit float with dither)

AUDIO DEVICE
Device: HiFiBerry DAC+ Pro
Chip: Burr Brown PCM5122
Architecture: Sigma/Delta Advanced Segment 24 bit 192 kHz
Interface: I2S

(11-02-2019, 05:14 PM)chris.brunhaver Wrote: I'm having somewhat similar issues (glitches and small pops every few seconds), though my configuration is somewhat different (pi 4, minidsp USB input as the dac). 

I have tried the cpu governor, 32/64 bit kernel and turned off Bluetooth with no changes. 

My original though was noise from the amps, but I used host USB power for my pi 4 from the minidsp preamp with no change.

It does seem to be slightly sample rate dependant, with upsampling via the resample making it occur even more frequently. That may just be a perception thing though and not real.

Shouod I start a new thread?

(11-15-2019, 05:28 PM)Mullet Wrote:

(11-02-2019, 05:14 PM)chris.brunhaver Wrote: I'm having somewhat similar issues (glitches and small pops every few seconds), though my configuration is somewhat different (pi 4, minidsp USB input as the dac). 

I have tried the cpu governor, 32/64 bit kernel and turned off Bluetooth with no changes. 

My original though was noise from the amps, but I used host USB power for my pi 4 from the minidsp preamp with no change.

It does seem to be slightly sample rate dependant, with upsampling via the resample making it occur even more frequently. That may just be a perception thing though and not real.

Shouod I start a new thread?

I wouldn't...

I'm having the same issue with 6.3. I also have an earlier version of MoOde that seems to work perfectly with same or similar settings. The pops are random and I have to use a track that is acoustic with not a lot going on to hear the pop. As far as settings... I'm using some config.txt tweaks...

disable_splash=1
hdmi_drive=2
dtparam=i2c_arm=on
dtparam=i2s=off
dtparam=audio=on
arm_freq=1000
sdram_freq=500
core_freq=400
gpu_freq=300
over_voltage=-3
over_voltage_sdram=-3
start_x=0
max_usb_current=1
gpu_mem=16
dtoverlay=pi3-disable-bt

Also have 32bit kernel. BT turned off. USB DAC. Default MPD version. 16384 KB for buffer at 30%. Performance. HDMI turned off. Ethernet fix. USB fix.

My USB transport is an Amanero USB to i2s.

Any ideas on what to look at next?

Thanks,
Mullet

(11-18-2019, 04:40 AM)Mullet Wrote: So after testing with another USB DAC I'm not having intermittent popping issues. The only difference I can think of is the previous USB DAC is UAC2 (Amanero), which is also being powered by the Pi. With this other DAC it's UAC1 and USB is being powered by separate 5v supply. UAC2 fix didn't seem to fix pops with first DAC. Hrmmmm.