NW-* series support adjusting volume tables on the fly. These tables impact sound signature and are loaded on boot. On Walkman One these are known as "Gain mode".
Wampy provides interface for manipulating those tables.
Supported:
- master volume
- master volume (dsd)
- tone control
Wampy comes with 6 master, 4 master dsd and 2 tone control tables. All of these are taken from stock firmwares of: NW-A40, NW-A50, WM1A, WM1Z, ZX-300. DMP-Z1 does not have these at all (different SOC). NW-A30 uses incompatible tables. These devices share tables, and sometimes they have different names, but same content.
Here is the table with default tables for each device:
| Device product | BBDMP5_linux | BBDMP3_linux | BBDMP2_linux | |||||||
| Model ID | 0x250000 (A50) | 0x230000 (ZX300?) | 0x240000 (A40) | 0x200000, 0x210000 (WM1A/Z?) | 0x220000 (A30) | |||||
| Region | CEW2, KR3 | Others | CEW2 | Others | CEW2, KR3 | Others | CEW2 | Others | CEW2 | Others |
| Volume table | ov_1291_cew ov_dsd_1291_cew |
ov_1291 ov_dsd_1291 |
ov_1288_cew ov_dsd_1288_cew |
ov_1288 ov_dsd_1288 |
ov_1290_cew ov_dsd_1290_cew |
ov_1290 ov_dsd_1290 |
ov_127x_cew ov_dsd_127x_cew |
ov_127x ov_dsd_127x |
ov_1280_cew ov_dsd_1280_cew |
ov_1280 ov_dsd_1280 |
| Tone control | tc_1291 | tc_1288 | tc_1290 | tc_127x | tc_1280 | |||||
Your sound signature without any software effects is affected by those files on boot and depends on: model id, device
product and region. Only two regions matter at this stage of processing - CEW2 and KR3 (region names taken from Walkman
One). Other regions affect sound on software level. _cew tables have much lower volume.
After deduplication there were a handful of files left. You can check which files were deduplicated in this file. Yes, Walkman One uses tables from other firmwares without any modifications; same with Eclipse. Model suffix indicates firmware it was taken from with stock priority over mods.
System files are marked by Ⓢ symbol; you cannot save these, but you can make a copy.
Master volume table structure:
| Sound effect OFF | Sound effect ON | |||||||||||||||||
| Table type | Headphone | Bluetooth | Others | Headphone | Bluetooth | Others | ||||||||||||
| Value type | LineOut | Headphones | Others | LineOut | Headphones | Others | LineOut | Headphones | Others | LineOut | Headphones | Others | LineOut | Headphones | Others | LineOut | Headphones | Others |
Every value type has 120 values, one value per volume point. Value range: 0-255.
On image above you can see that at current volume (~40, X axis, indicated by red line) output for headphones on high gain using HpOut output will be modified by a value ~100 (Y axis).
What does that value means? Depends on value type. For example, Play type works in opposite direction, the less value
is, the louder is output.
Use buttons Copy val and Paste val to copy and paste values from/to currently selected value type (everything on
graph). Press Edit to edit values. Apply immediately applies changes. Press Save to save file
to wampy/sound_settings/master_volume/ directory.
There are 26 table types and 13 value types specified by codec; you usually want to change Play and Headphones types
for Headphones, high gain table. Feel free to experiment.
Volume tables are NOT applied after reboot, you have to load them manually. There might be an option for automatically loading them later.
Drag point wherever you want it to be. Reset button resets everything that happened on editor screen (and only
there).
There is no multitouch, use zoom buttons. Panning sucks, zoom malfunctions in some cases, but hey, it works. There will be improvements later.
DSD tables are simpler. There is no sound effect toggle and value type, just table type. You are interested in DSD*
tables. X-axis: 120 values. Value range: 0-32768.
This table is NOT related to tone control settings in Walkman application. You are interested in SAMP_GENERAL_HP
table (maybe NAMP_GENERAL_HP?), others are for NW500/700 headphones. X-axis: 320 values. Value range: 0-256.
Press "Refresh" to get actual values. Press on "Refreshed" label to remove it.
At this page you can see your model, region and device product, which affect volume table loaded by default.
Tables shown are tables currently in use.
Audio card, audio device and CPU frequency change depending on type of currently played file (DSD/HiRes) and on Walkman One Plus mode status.
Stop currently playing track, press huge button to start, see overlay, navigate to USB DAC screen.
Source code is available on https://github.com/zhangboyang/llusbdac.
Random crashes during module startup, especially when music is playing.
Module cannot be unloaded after USB DAC function was enabled (overlay stays on); reboot required;
Sound setting tabs require double taps for reasons I wasn't able to understand. This is a bug, not a feature.