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About nereis

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  1. A couple of bug reports: 1. sleep timer does not respect play song till it ends, music is cut off abruptly at set time 2. eq profiles switching based on output source is not reliable. I have profiles setup between internal speaker, headphones and bluetooth, and sometimes they would not switch.
  2. I would also love to see convolver support in Poweramp, since this opens up the use of corrective eq for individual headphones to get a reference frequency response (Viper DDC/IRS), which I think doesn't need to happen on a system level, but only when listening to music. Another suggestion would be to open up a option to reorder different DSPs, for example on devices with sufficient cpu power, having sox resampler resample to 96k before engaging in a convolver, eq and such would be beneficial to quality,
  3. From this info I am extrapolating that the best setup is then Poweramp v3 -> sox 44.1k to 96k -> hi-res 24/96 (pushes aliasing / low pass filter artifacts further up the freq spectrum) -> (Android sound layer, or is this bypassed?) -> Qualcomm DSP delta sigma Since I also have alsa with a good quality resampler (not as elaborate as sox, but better than Sony stock implementation) running in the background to handle non Poweramp audio, if Poweramp hi-res does bypass this layer, I can leave its setting at 48k without fear of going from 44.1 to 96 to 48.
  4. I have 2 devices both with snapdragon 801 under the hood, LG G3 appears to switch sample rate based on input in Poweramp (select 96k and play 44.1k file, hi-res out switches to 44.1), where as on Sony Z3TC I get to dictate 96k in hi-res output, and Poweramp would go thru sox and resample to 96k and output at 96k. Do you think it's really that WCD9320 that lacks a dedicated 44.1k clocksource so that it can only so mutiples of 8k? Or maybe it can get around using non-integer multiples of 8k and somehow do 44.1k output? I am aware of that on x86 pc running realtek hd audio codecs, most (post ac97 era / win xp that is) can support native switching of 44.1k/48k sample rates, however due to the lack of dedicated clocksource performancs on 44.1 is (marginally) worse than on 48k, but still better than having a poor quality resampler do 44.1 to 48 in system mixer. I am currently playing with alsa in android, and there we get to introduce another higher quality resampler. (works great before the introduction of Poweramp v3), but now I have a feeling this may be redundant.
  5. @maxmp Can you please clarify the behaviour of the Sony hi-res variant? Is it that Sony is ONLY capable of 24/96 or 24/192 (maybe for z5, but not seen on z3 variants), and NOT good for 24/44.1? Most or my sources are 16/44.1 redbook material, and it would be nice to play at 24/44.1 to avoid resampling, but if it will get resampled to 96k regardless of Poweramp's setting, we might as well take advantage of the new sox resampler and output everything at 24/96. Poweramp appears capable of outputting 24/44.1 though, but I've made a lot of edits in audio_policy and mixer_paths for Hi-res to even show up, so not sure if Poweramp's data can be trusted.
  6. Played with quite a bit of hacks in mixer_paths and audio_policy on the Sony Z3 Tablet Compact (pretty much hardware to Z3), and finally got Hi-res to work. Now the device plays 24bit/44.1khz flacs without going to 48khz system sample rate. DVC is mandatory, and disabling DVC forces Poweramp to fall back to OpenSL ES. audio_policy.conf mixer_paths.xml
  7. Tried Hi-res output on Lg G3 stock Lollipop 5.0.1, where Snapdragon 24-bit PCM is made available. This makes it possible to pass 24bit/44.1khz towards the headphone out without being pushed through resampler (Audiotrack and OpenSL ES forces 48khz) and achieves much better sound. However the Hi-res output becomes choppy once the screen turns off, and audio would randomly pause and resume from time to time. No tuning of buffers seem to have an effect on this behaviour, so if it would be possible to work out the kinks this would be a great addition to this phone!
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