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post #496 of 742

Hi all,

 

New BitPerfect user here and just wanted to thank agentsim for making this wonderful app. It has definitely made a difference to my system.

 

I've been using 0.30 onwards on my hifi rig (Mac Mini 2011 Lion -> Weiss DAC202).

 

Since updating to 0.31, i've noticed a slightly worser sound, a bit of loss of definition and slam to bass notes particularly. I've A/Bed the two versions i have and can pick out it out everytime. Your release notes didn't really mention any significant changes so i'm not sure why it's happening.

 

I've made sure the settings are the same - no upsampling, no integer mode (my dac doesn't support it anyway). I've checked "use maximum device buffer size" which does improve the sound on my dac. When i check the device information (whilst playing) in each version, it is identical.

 

Any suggestions? The difference is small, but obviously i don't want newer versions having worse sound.

 

As for other problems, i have occasional stuttering at the beginning and end of playlists but it's not a big deal to me.

post #497 of 742
Thread Starter 

I'm not aware of any changes that would affect sound quality, but I'm learning that sound quality can change with seemingly unrelated changes.

Version 0.32 should be through the App Store soon, I'd be interested to know your take on that update. Also, I'm working on a much improved version with a redesigned, 64-bit playback engine which should provide a decent boost in sound quality, but that is further away.

post #498 of 742
Thread Starter 

New Version, 0.32 is available.

 

Quite a few changes this time round, mostly useful improvements and bug fixes. Check out the blog for all the details.

 

As always let me know if you run into any problems, especially if you were having trouble with 0.31 and the problems haven't been resolved.

 

I'm hoping to devote more dev time to the new audio engine and other goodies which will be called 1.0. Bug fixes will continue to be 0.3x.

 

Enjoy!

post #499 of 742

Looks like my stuttering problem is gone.  I was able to sync my iPhone and also update apps and music played perfectly.  I did have one issue where BitPerfect seemed to stop and then noticed it crashed.  I'll keep my eye out for this again.

 

I also tested again again Audirvana Plus and I think I'm back to preferring BitPerfect.  It feels a little richer and musical in the end.  Audrivana Plus provides a little more detail but lose a little bit of the warmth. And I just don't like have to have a separate player where I'm dragging tracks into it.

post #500 of 742

I just upgraded to version 0.32, the stuttering issue appears to be gone! biggrin.gif How do I select the playback rate? Thanks.

post #501 of 742

I'm a new user and just installed BitPerfect today. I had a few problems with clicking and sometimes when moving to the next track iTunes would show it playing, but there would be no sound. Turning off "Use Maximum Device Buffer" and adjusting buffer size to 1024Mb (I've only got 2GB RAM on a 2006 Mac Mini) seems to have sorted that out for now, but it's still early stages.

 

Maybe this has been discussed somewhere else, but what's the best way to do some comparisons between iTunes by itself and with BitPerfect? Is it enough to just click "Disable BitPerfect" or should I quit it completely and restart iTunes?

 

Thanks.

 

post #502 of 742

Just selecting "disable" should work.

post #503 of 742

 

Quote:
Originally Posted by Currawong View Post

Just selecting "disable" should work.


Thanks, that seems to work, but during my testing I noticed a few other problems. According to the preferences my HRT Music Streamer II supports Integer Mode (also confirmed here), but when I select that option I get a lot of clicks and pops during playback. I have no other USB devices connected. I also got the problem of dead air when switching between tracks a few times. iTunes is playing, but BP says stopped.

 

Another problem I noticed was a possible conflict with another app I was using called SoundSource. It's a handy little app that allows you to switch your audio input and output sources from an icon in the top menu bar and without having to open the Sound Preferences. I used it to switch from my headphone output connected to my TV and the USB DAC connected to my stereo, but it didn't seem to work when running BP and I had trouble getting the outputs to work properly. I've turned it off for now, but it would be nice if the two apps would work together.

post #504 of 742

I've been doing some more testing today and SoundSource does seem to work okay with BitPerfect. BP seems to ignore the settings in Sound Preferences and uses the device set in it's own prefs. So itunes will play through the DAC, while Safari and Quicktime play through the headphones without making any changes. So maybe I don't even need SoundSource anymore.

 

I also tried connecting my Music Streamer to a powered USB hub and now I'm not hearing any clicking when Integer Mode is set. I was trying to avoid using a hub, because HRT recommends not using one in their setup guides, but I've read on other forums that lots of people have problems with this DAC unless it is connected to a powered hub.

 

I also invested in an expensive silver USB cable and I was worried that I might be defeating the purpose of using that by sending the audio signal through a cheap usb cable and a hub first, and then into the good cable. I don't know if it makes an audible difference, but I guess if it's more stable maybe that's the best way to run things.

 

I'm going a bit crazy doing all these test, and I'm also a bit sleep deprived, so I don't trust my ears right now. Maybe it's a bit off topic, but If anybody has any opinions on whether the hub and an extra usb cable will degrade the sound and defeat the purpose of using an expensive cable to the DAC, please let me know your opinions.

 

Thanks.

post #505 of 742
Thread Starter 

@SoundSource: That sounds about right. BitPerfect takes control of whichever device you configure it to use in Preferences. No other application (not even Audio MIDI Setup) can take it away until BitPerfect relinquishes control. Maybe SoundSource should not present hogged devices in the drop-down, but that's up to them.

 

@Clicking: Yes, I had forgotten about powered USB hubs helping with Integer Mode clicks, not entirely sure why it helps though.

post #506 of 742

Sorry for all the posts, but it's me again. Unfortunately, I'm still having trouble with iTunes playing but BitPerfect saying it's stopped and not outputting anything. I was just listening to an album and the first two tracks played fine, but the third track played all the through in iTunes with no output. It's now on the the fourth track and still no output.

 

I just clicked on the BP icon and the menu opened and it said "stopped" at the top, and when I clicked on the icon again it suddenly started playing. Is this a bug?

post #507 of 742
Thread Starter 
Quote:
Originally Posted by streetcore View Post

Sorry for all the posts, but it's me again. Unfortunately, I'm still having trouble with iTunes playing but BitPerfect saying it's stopped and not outputting anything. I was just listening to an album and the first two tracks played fine, but the third track played all the through in iTunes with no output. It's now on the the fourth track and still no output.

 

I just clicked on the BP icon and the menu opened and it said "stopped" at the top, and when I clicked on the icon again it suddenly started playing. Is this a bug?


Yes, that is most likely a bug. Can you send me the logs (via e-mail: bitperfectsound@gmail.com)? You can find them in the Console application located in Applications -> Utilities.

 

post #508 of 742

I updated my memory from 4GB to 8GB but I was still getting skipping after playing tracks for a while.  Then I saw in iStat that my available memory was alway slowly drifting downward.  So I installed the app "iCleanMemory" and now I have no more skipping problems.  

post #509 of 742

I've been playing around with this application for a while now.

 

 

My setup is a Macbook Pro Intel Core 2 Duo @ 2.4 ghz, 8gb ram, 750gb HD @ 7200 rpm.  

 

Optical out -> DAC -> Fisher X-200 tube amp (aka KX-200) -> various different speakers depending on what I'm playing with at the time.

 

Right now I notice subtle improvements, I think.  It is hard to A/B the software.

 

What would really be nice would be this: when disabling bitperfect, it would be nice if the music didn't stop altogether and lose the position of the track in itunes.  I know you probably have a lot on your plate scheduled for updates and not sure if this is even feasible, but thought this would make A/Bing the software much easier, especially for future testing.

 

Also, one thing I've been wondering about here is whether or not the accuracy of the original recording is being maintained.  Is any sort of EQ being used here?

 

 

 

 

 

post #510 of 742

Just wanted to follow about the bug I had where it would play a spit second of the wrong track if I played music from Library: Music.  Turns out it was either a script or some plug-in, or both that was causing the problem.  Not sure which one was the culprit, because I deleted them all.   So looks like BitPerfect was perfect the whole time.

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