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Dana Conrad 4dc602dd7f erosq: Tweak volume scale to be approximately correct 
Tested on eros q, everything measured from line out,
open circuit.

- volume steps were approximately double the dB they
  were labelled as, so "-2 dB" would result in a change
  of about -4 dB from maximum (0, +6.2dBV)
- maximum volume defining the line out volume only
  changed every 10 values, and then was not close
  to correct- "-10 dB" resulted in -2.5 dB from maximum

This gets the volume dB approximately correct, and
maximum volume correctly sets the line out volume.
I was unable to get odd values in the max volume
to work, so set the step size to 2 instead of one.

For "consumer level" (-10dBV), set to -16.
For "Pro level" (+4dBu -> ~1.8dBV), set to -4.

Change-Id: I898b85d768153579a893b23551019af88f865d21
2021-04-17 12:09:19 +00:00
..
asm Rename symbols of FiiO M3K Linux-based port 2021-02-27 23:53:28 +00:00
common rockbox: move firmware checksum algorithms into a common header 2020-11-22 05:12:04 +00:00
drivers erosq: Tweak volume scale to be approximately correct 2021-04-17 12:09:19 +00:00
export erosq: Tweak volume scale to be approximately correct 2021-04-17 12:09:19 +00:00
include rockbox: move firmware checksum algorithms into a common header 2020-11-22 05:12:04 +00:00
kernel [3/4] Completely remove HWCODEC support 2020-07-24 21:20:13 +00:00
libc stdio compat layer for plugins 2017-12-23 20:54:56 -05:00
target ibasso: Found a reliable way to determine if SD card is present at startup 2021-04-13 14:28:30 +00:00
usbstack usb: implement macro for initializing USB strings 2021-03-25 13:26:03 -05:00
arabjoin.c
arabjoin.h
ata_idle_notify.c Fix reds. 2014-03-14 23:43:45 +01:00
backlight-sw-fading.c For backlights that have a wide control, support skipping steps. 2020-10-02 02:45:43 +00:00
backlight.c Fix reversal of "always/never" in "LCD setting > Sleep (After Backlight Off)" 2019-06-27 14:19:05 +02:00
bidi.c bidi.c: Check buffer sizes. 2014-01-09 23:30:32 +01:00
buflib.c Buflib_init Bugfix Minsize 2020-07-15 13:29:21 +00:00
COPYING
core_alloc.c Make a few local variables static 2015-01-11 18:02:43 +01:00
debug.c [1/4] Remove SH support and all archos targets 2020-07-24 21:20:13 +00:00
eeprom_settings.c
enc_base.c
events.c Make thirty functions static to reduce binary size 2015-01-05 18:44:36 +01:00
firmware.make fonts: Use '08-Rockfont' as FONT_SYSFIXED on targets with 128x64 screens 2020-08-31 13:32:24 -04:00
font.c misc: Only include rbpaths.h and string-extra.h in places that need it 2021-04-10 12:08:12 -04:00
font_cache.c fonts: Do not unload completely on USB. 2014-01-15 23:37:39 +01:00
general.c [3/4] Completely remove HWCODEC support 2020-07-24 21:20:13 +00:00
hangul.c
ifp_usb_serial.c Make thirty functions static to reduce binary size 2015-01-05 18:44:36 +01:00
load_code.c Fix various reds. Some includes needed fixup. 2014-03-03 19:10:48 +01:00
logf.c configure: Add prompt for USB Serial into the advanced mode 2020-11-18 08:50:05 -05:00
lru.c
panic.c [4/4] Remove HAVE_LCD_BITMAP, as it's now the only choice. 2020-07-24 21:20:13 +00:00
pcm.c pcm: Further cleanup of unused bits of the PCM ACPI: 2020-11-12 15:59:09 +00:00
pcm_mixer.c pcm_mixer: Fix an idle frame calculation bug introduced in 2e708c48c5 2020-10-24 02:00:50 +00:00
pcm_sampr.c pcm: Missed a file for the 192/176K playback. 2020-09-30 22:03:34 -04:00
pcm_sw_volume.c pcm: Get rid of pcm_play_pause() and associated APIs 2020-10-31 01:18:27 +00:00
powermgmt.c New port: FiiO M3K on bare metal 2021-03-28 00:01:37 +00:00
profile.c
README
rolo.c MIPS: make sure to fill 'jr' branch delay slot with 'nop' 2021-04-07 19:59:57 +01:00
rom.lds h300: add support for ROM image generation 2020-10-26 01:37:42 +00:00
screendump.c Agptek Rocker: Initial commit 2018-06-12 10:31:14 +02:00
scroll_engine.c ClipPlus BOOTLOADER DONT FIT! 2020-10-23 20:38:59 -04:00
sdmmc.c
sound.c Revert "sound: add sound_numdecimals() to round out the sound setting query API" 2021-04-09 10:52:02 +00:00
SOURCES New port: FiiO M3K on bare metal 2021-03-28 00:01:37 +00:00
storage.c FS#13154: Don't discard return code in storage_init() 2020-08-24 14:37:23 -04:00
system.c AMS: Return ascodec to interrupt-based I2C2 driver 2017-01-25 00:05:13 +01:00
timer.c Fix timer Agptek Rocker (other hosted players) 2019-10-17 21:19:00 +02:00
tuner.c [1/4] Remove SH support and all archos targets 2020-07-24 21:20:13 +00:00
usb.c USB: Reset poweroff timer for all USB events 2020-12-24 00:40:01 -05:00

README 

See docs/README