[kamaurul]

Hello all,

New EMU 0202 USB owner here, just received mine yesterday.

Anyway, my laptop is a Celeron M 1.5GHz with 512MB RAM, with WinXP SP2. The Windows Task Manager shows CPU utilization hovering around 16% when playing FLAC/MP3s in foobar/xmplay. Versus only 4% when using the onboard sound card (Conexant AC-Link Audio). There was no difference in CPU utilization between ASIO and DirectSound.

So, is this normal? I can't recall the figure being this high when using the iBasso D1 a few months ago.

 

[jiiteepee]

Quote:

Originally Posted by kamaurul /img/forum/go_quote.gif Hello all, New EMU 0202 USB owner here, just received mine yesterday. Anyway, my laptop is a Celeron M 1.5GHz with 512MB RAM, with WinXP SP2. The Windows Task Manager shows CPU utilization hovering around 16% when playing FLAC/MP3s in foobar/xmplay. Versus only 4% when using the onboard sound card (Conexant AC-Link Audio). There was no difference in CPU utilization between ASIO and DirectSound. So, is this normal? I can't recall the figure being this high when using the iBasso D1 a few months ago.

As the data goes through CPU twice in your case (FLAC/mp3 decoding + stream to USB audio interface) it's possible that such processor you have there becomes taxed more than what you see w/ onboard sound (only decoding is done by CPU). You could try by
- increasing the playback latency buffers,
- setting the system Performance for programs (it's propably defaulted for background services)
- rise the PCI latency for USB controller (PCI Latency Tool, try values between 128-256) (also if you see high values there (graphics system, just lower it to 32-64).


There are some tweaks @ http://www.musicxp.net/ you could try.

IIRC, the M processor is quite good for over-clocking ... you could also try to rise the speed for it (but be careful there... search the web for some instructions).


BTW, try if the BeatPort player linked in my sig, gives other results (ASIO).

jiitee

 

[vulc4n]

Quote:

Originally Posted by kamaurul /img/forum/go_quote.gif Hello all, New EMU 0202 USB owner here, just received mine yesterday. Anyway, my laptop is a Celeron M 1.5GHz with 512MB RAM, with WinXP SP2. The Windows Task Manager shows CPU utilization hovering around 16% when playing FLAC/MP3s in foobar/xmplay. Versus only 4% when using the onboard sound card (Conexant AC-Link Audio). There was no difference in CPU utilization between ASIO and DirectSound. So, is this normal? I can't recall the figure being this high when using the iBasso D1 a few months ago.

Sounds right to me.

Any USB audio device is going to eat up cpu time.

 

[sejarzo]

CPU utilization with FLAC>Foobar 0.8.3>ASIO>0404 USB is right in that 15-18% range all the time on my Athlon 64/2.4GHz/1GB RAM desktop or Turion 64/1 GB notebook.