Audio Processing

Support questions for Neutron Player only.
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PaperBoat
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Joined: Tue Aug 02, 2022 7:15 pm

Audio Processing

Post by PaperBoat » Tue Aug 02, 2022 7:20 pm

How to know about the details of Neutron Music Player's audio processing path? :?:

blaubär
Posts: 3313
Joined: Tue Apr 02, 2019 6:48 am

Re: Audio Processing

Post by blaubär » Wed Aug 03, 2022 3:19 am

Could you elaborate on your question ? What exactly would you want to know ? What level of detail do you think you need ?

PaperBoat
Posts: 5
Joined: Tue Aug 02, 2022 7:15 pm

Re: Audio Processing

Post by PaperBoat » Wed Aug 03, 2022 7:27 am

blaubär wrote:
Wed Aug 03, 2022 3:19 am
Could you elaborate on your question ? What exactly would you want to know ? What level of detail do you think you need ?


I'm looking for how Neutron is processing the audio... How it's bypassing the Android audio mixer/ stack. I mean processing stage/ stack, resampling, bit, rate, etc. It could be look like the Poweramp "Audio Info" ... Please help.

blaubär
Posts: 3313
Joined: Tue Apr 02, 2019 6:48 am

Re: Audio Processing

Post by blaubär » Wed Aug 03, 2022 7:43 am

The is no special audio info display. Most information is available on "Settings > Audio Hardware"

Screenshot 2022-08-03 094158.jpg
Screenshot 2022-08-03 094158.jpg (36.38 KiB) Viewed 1265 times
20220803_094402.jpg
20220803_094402.jpg (73.28 KiB) Viewed 1264 times

blaubär
Posts: 3313
Joined: Tue Apr 02, 2019 6:48 am

Re: Audio Processing

Post by blaubär » Wed Aug 03, 2022 8:45 am

... but there's a proposal to add such a feature :
blaubär wrote:
Sun Jan 10, 2021 9:38 am
Situation: Neutron offeres information as to what sample rate and size its input and output have

Problem: the information regarding the input is incorrect, 16-bit-mp3 is displayed as 32- or 64-bit, and there's no information as to whether the os is likely to resample before the DAC (e.g. if you choose an unsupported sample rate in custom format)

Consequence: some confusion on user side

Proposal: add a user-friendly graphical overview about the chain of audio processing from the input file to the DAC

Example: see Does neutron actually go around android system, or is the output resampled to android supported frequency?

PaperBoat
Posts: 5
Joined: Tue Aug 02, 2022 7:15 pm

Re: Audio Processing

Post by PaperBoat » Wed Aug 03, 2022 8:59 am

blaubär wrote:
Wed Aug 03, 2022 7:43 am
The is no special audio info display. Most information is available on "Settings > Audio Hardware"


Screenshot 2022-08-03 094158.jpg

20220803_094402.jpg
I couldn't understand the "Audio Hardware" information parameters... Could you please explain the CPU, VEC, DRV? The frequency which is showing in the "Audio Hardware" section is it the frequency of phone/ pc OR a connected device's (Bluetooth speaker) frequency? Which parameter representing what?

PaperBoat
Posts: 5
Joined: Tue Aug 02, 2022 7:15 pm

Re: Audio Processing

Post by PaperBoat » Wed Aug 03, 2022 9:01 am

blaubär wrote:
Wed Aug 03, 2022 8:45 am
... but there's a proposal to add such a feature :
blaubär wrote:
Sun Jan 10, 2021 9:38 am
Situation: Neutron offeres information as to what sample rate and size its input and output have

Problem: the information regarding the input is incorrect, 16-bit-mp3 is displayed as 32- or 64-bit, and there's no information as to whether the os is likely to resample before the DAC (e.g. if you choose an unsupported sample rate in custom format)

Consequence: some confusion on user side

Proposal: add a user-friendly graphical overview about the chain of audio processing from the input file to the DAC

Example: see Does neutron actually go around android system, or is the output resampled to android supported frequency?
This is exactly what I'm looking for...

blaubär
Posts: 3313
Joined: Tue Apr 02, 2019 6:48 am

Re: Audio Processing

Post by blaubär » Wed Aug 03, 2022 9:17 am

PaperBoat wrote:
Wed Aug 03, 2022 8:59 am
Could you please explain the CPU, VEC, DRV? The frequency which is showing in the "Audio Hardware" section is it the frequency of phone/ pc OR a connected device's (Bluetooth speaker) frequency? Which parameter representing what?
"CPU" - type of CPU
"VEC" - seems to refer to part of the processor or graphics that deals with matrix and vector calculation
"DRV" - the audio devive and driver

"Frequency" - the sampling rate that Neutron uses for DSP and output to DAC

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