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Poweramp Knowledge Base

База знаний Poweramp


Poweramp Equalizer Knowledge Base

База знаний Poweramp Equalizer

Posts posted by jumpingjackflash5

  1. Hello,

    is it possible to enable native 44.1 playback on my moto G5s, so that I need not resample CD tracks in advance on my PC (16/44.1) to 16/48 sample rate to avoid resampling on mobile device - or better said avoid resampling at all?

    Thank you, log attached lower.






    08:06:45.167 v3-build-835-arm32-play

    Device: motorola motorola Moto G (5S) montana_n msm8937 [armeabi-v7a, armeabi]



    has outputs_primary, sampling_rates=44100|48000

    has direct_pcm, sampling_rates=8000|11025|16000|22050|32000|44100|48000|64000|88200|96000|176400|192000


    has direct_pcm formats=AUDIO_FORMAT_PCM_16_BIT

    has compress_offload, sampling_rates=8000|11025|12000|16000|22050|24000|32000|44100|48000|64000|88200|96000|176400|192000



    has usb

    has usb outputs

    has usb_device, sampling_rates=dynamic

    has usb formats=dynamic



    USB can handle Hi-Res - sdk=27

    OK flags=0x214020700000000















  2. I don't know the internals of Android, but the concept of "application volume" and "system volume" ain't applicable for this OS?

    For sure there is a 16 bit, 48 kHz pipe that sound playback must go through in majority of Android phones, and we can adjust volume before that pipe or after that pipe. 

    As I wrote now I am satisfied with the DVC sound, so I keep it on.


  3. Hello, 


    I am using Poweramp latest version (paid) on Moto G5S.

    Generally I do not use any equalizers - I prefer flat playback, I know that resampling to 48000 Hz and dithering to 16 bit is neccessary on Android since my phone has no 24 bit support. 

    When I disable DVC sound volume is lower and a little bit "thinner", whereas when enabled it is louder. When I started to use Poweramp I left DVC disabled, but recently with the new builds I enabled it and started to like the new sound better than with DVC disabled.

    I would like to ask what exactly the Direct Volume Control function does.

    Does really DVC just control the volume on hardware level, preserving maximum fidelity possible on Android? I have read somewhere that DVC acts like a compressor, that seems strange to me, since it would change the sound character of the track and would be very CPU intensive. 

    On the other hand, if it works in such a way that it controls the volume at the phone DAC (or system) level and lets use the full 16 bit pathway (that is available) for sending the audio stream from Poweramp to android mixer, it can really help given that 16 bit dynamics is already at the edge of fidelity on playback, and if without DVC the volume reduction but be done within 16 bit stream it can make audio worse.

    So please experienced users explain. 



  4. Hello, 

    thanks for this great version. It may be my listening bias, but since this version I think that the sound is a little bit smoother and less grainy that I perceived with the some of previous versions.

    I use Sox, 95.4 (or 90.5 passband), modified-e-weighted dither, standard 16/48 headphone output on Moto G5S (Android 7.1.1)




  5. Hello,

    first to say: Poweramp is great for Android and I use the paid version.

    I have question about Resampler/Dithering. I highly appreciate this possibility with SoX since unfortunately Android now is limited to 16/48 output (i do not use external DAC with my phone).

    I have some files in 16/44.1 format and some files in 16/48 format (I use offline resampling beforehand for some tracks and some files I have in 48 kHz format native sample rate).

    I assume that Resampler only kicks in if the input file has different sample rate than 48000 Hz, if I play back 48000 Hz files it will do "nothing" and pass the stream to the DAC. That is correct behaviour.

    But what about dither? If I enable dither, will it dither only when resampling (e.g. from 44100), or maybe also when the source is 24 bit (regardless of sample rate),  that would be great and correct behaviour (even the first possibility based on sample rate different than system rate of 48000 Hz would be sufficient and actually is more important for me). Or if I play back 16/48 file, will it dither "again" - that would be worse, because in that case I must probably disable dither so that my 16/48 files are not dithered "twice"?

    Thank you for information.





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