Mo b8ad44c431 Opt-in channel-power squelch for AM audio RX (#3315) ...

* AM: add opt-in channel-power squelch for AM audio RX

Add an SDR++-style power squelch on the complex channel signal for the
Analog Audio RX app in AM modes (DSB/SSB/CW). The squelch measures the
mean channel power, converts it to dBFS, and mutes the demodulated audio
when the signal is below a user-set threshold. Being carrier-based it
keys on the AM carrier (e.g. airband/ATC) rather than on audio-band
noise, which the existing FM squelch could not do for AM.

A new 'SQ' field (0-99, 0 = off) is added to the AM options view and is
persisted per app via app_settings. Default is 0, so existing AM
behaviour is unchanged unless the user enables it. Threshold maps 1..99
to -80..-20 dBFS.

Touches: message (AMConfigureMessage.squelch_level), baseband_api
(AMConfig::apply), receiver_model (am_squelch_level get/set),
app_settings (persistence), proc_am_audio (DSP), analog_audio_app (UI).

* Refactor audio power calculation to use magnitude squared

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

2026-09-14 20:54:54 +02:00

..

apps

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

external

for app jammer failure fix (#3303)

2026-09-02 14:42:57 +02:00

hw

Gpio modify v4 (#3266)

2026-07-10 21:37:41 +02:00

protocols

remove redundant code from #3078 (#3082)

2026-03-10 16:13:10 +01:00

ui

Feature/sliding freq (#3280)

2026-08-08 21:47:54 +02:00

app_settings.cpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

app_settings.hpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

audio.cpp

Add retry mechanism for volume write (#3121)

2026-04-10 08:33:48 +02:00

audio.hpp

Add retry mechanism for volume write (#3121)

2026-04-10 08:33:48 +02:00

baseband_api.cpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

baseband_api.hpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

binder.hpp

make the ptext_prompt func can define which keyboard to enter (#2608)

2025-04-04 15:41:12 +02:00

bitmap.hpp

Fix typos of 'transceiver' (#2910)

2026-01-08 10:34:05 +01:00

capture_thread.cpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

capture_thread.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

chconf.h

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

clock_manager.cpp

#3288 (#3297)

2026-08-21 19:56:54 +02:00

clock_manager.hpp

fix clock source change on praline (#3233)

2026-06-22 16:50:16 +02:00

CMakeLists.txt

Feature/sliding freq (#3280)

2026-08-08 21:47:54 +02:00

config_mode.cpp

Gpio modify v4 (#3266)

2026-07-10 21:37:41 +02:00

config_mode.hpp

Allow 3 boot failures before Config Mode starts (#1816)

2024-01-26 21:02:52 +13:00

core_control.cpp

External apps (#1469)

2023-10-02 20:19:22 +02:00

core_control.hpp

External apps (#1469)

2023-10-02 20:19:22 +02:00

database.cpp

Add vendor name in bluetooth rx app (#2696)

2025-06-16 10:57:58 -07:00

database.hpp

Add vendor name in bluetooth rx app (#2696)

2025-06-16 10:57:58 -07:00

debug.cpp

Gpio modify (#3229)

2026-06-19 07:48:55 +02:00

debug.hpp

Update clang format to 18 (#2891)

2025-12-14 11:26:21 +01:00

demofont.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

dirty_registers.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

event_m0.cpp

remove const temp measurement from core to the ext app. we don't need it (#3259)

2026-07-08 10:09:53 +08:00

event_m0.hpp

Change charge display off to sleep (#3153)

2026-04-29 19:57:17 +02:00

field_binder.hpp

New Freqman edit UI (#1272)

2023-07-14 18:46:39 -07:00

file_path.cpp

Add Security+ 2.0 TX App (#3217)

2026-06-15 19:28:47 +02:00

file_path.hpp

Add Security+ 2.0 TX App (#3217)

2026-06-15 19:28:47 +02:00

file_reader.cpp

Update playlist file parsing, reduce allocs (#1157)

2023-06-15 22:15:26 +02:00

file_reader.hpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

file_wrapper.hpp

Progress bar for Notepad IO (#1322)

2023-07-30 09:36:57 +02:00

file.cpp

Added CU8 playback support (#3166)

2026-05-09 12:23:43 +02:00

file.hpp

Update clang format to 18 (#2891)

2025-12-14 11:26:21 +01:00

firmware_info.c

Fix HackRF Pro firmware compatibility check failure (#2996)

2026-02-17 11:35:12 +08:00

flipper_subfile.cpp

Flipper sub (raw+binraw AND ONLY OOK) TX (#2361)

2024-11-16 18:03:53 +01:00

flipper_subfile.hpp

Flipper sub (raw+binraw AND ONLY OOK) TX (#2361)

2024-11-16 18:03:53 +01:00

freqman_db.cpp

Make detector use freqman (#3119)

2026-04-02 08:26:45 +02:00

freqman_db.hpp

Make detector use freqman (#3119)

2026-04-02 08:26:45 +02:00

freqman.cpp

fixed memory usage (#2380)

2024-11-22 09:54:34 +01:00

freqman.hpp

Adding_WFM_AM_mode_to_Audio_App (#2644)

2025-05-05 17:48:01 +02:00

gradient.cpp

UI and bug fixes (#3164)

2026-05-10 00:08:05 +02:00

gradient.hpp

Custom waterfall colors (#2617)

2025-04-11 10:46:04 +00:00

hackrf_core_mini.c

Update submodule (#3222)

2026-06-12 22:15:44 +02:00

halconf.h

Usb serial (#1648)

2023-12-17 17:20:35 +01:00

i2c_device_to_host.c

I2cshell (#2348)

2024-11-08 11:46:27 +01:00

i2c_device_to_host.h

I2cshell (#2348)

2024-11-08 11:46:27 +01:00

io_convert.cpp

Added CU8 playback support (#3166)

2026-05-09 12:23:43 +02:00

io_convert.hpp

Added CU8 playback support (#3166)

2026-05-09 12:23:43 +02:00

io_file.cpp

Playlist cleanup (#1163)

2023-06-17 22:01:46 +02:00

io_file.hpp

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

io_wave.cpp

Update Copyright in comment blocks (#1878)

2024-02-10 16:56:50 +01:00

io_wave.hpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

io.hpp

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

iq_trim.cpp

Simple amplification option in IQ Trim app (#1506)

2023-10-19 20:14:25 +02:00

iq_trim.hpp

Simple amplification option in IQ Trim app (#1506)

2023-10-19 20:14:25 +02:00

irq_controls.cpp

HackRF Pro (praline) arch-port initial PR (#2958)

2026-02-11 09:15:11 +01:00

irq_controls.hpp

New Morse TX app (#2948)

2026-01-30 17:18:13 +01:00

irq_lcd_frame.cpp

HackRF Pro (praline) arch-port initial PR (#2958)

2026-02-11 09:15:11 +01:00

irq_lcd_frame.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

irq_rtc.cpp

Change charge display off to sleep (#3153)

2026-04-29 19:57:17 +02:00

irq_rtc.hpp

Change charge display off to sleep (#3153)

2026-04-29 19:57:17 +02:00

keeloq_common.cpp

Refactor KeeLoq crypto functions and add new KeeLoq TX app (#2990)

2026-02-16 15:19:50 +01:00

keeloq_common.hpp

Refactor KeeLoq crypto functions and add new KeeLoq TX app (#2990)

2026-02-16 15:19:50 +01:00

keeloq_file.cpp

Refactor KeeLoq crypto functions and add new KeeLoq TX app (#2990)

2026-02-16 15:19:50 +01:00

keeloq_file.hpp

Refactor KeeLoq crypto functions and add new KeeLoq TX app (#2990)

2026-02-16 15:19:50 +01:00

keeloq_keystore.cpp

Add support for decrypting and saving KeeLoq signals for SubGhzD (#2982)

2026-02-12 10:41:56 +01:00

keeloq_keystore.hpp

fix compile (#2983)

2026-02-12 12:41:12 +01:00

log_file.cpp

Added morse receiver app. (#2923)

2026-01-16 09:57:45 +01:00

log_file.hpp

Added morse receiver app. (#2923)

2026-01-16 09:57:45 +01:00

lz4.h

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

lz4.S

added compression of baseband images

2023-03-21 19:18:38 +01:00

main.cpp

Gpio modify (#3229)

2026-06-19 07:48:55 +02:00

mcuconf.h

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

metadata_file.cpp

Free up some fw space (#2844)

2025-10-28 08:10:09 +08:00

metadata_file.hpp

Record gps lat, lon, satinuse from recorder app if there was gps signal. (#1992)

2024-03-15 21:56:20 +08:00

ook_file.cpp

Ook Editor adjustements (#2366)

2024-11-19 17:16:37 +01:00

ook_file.hpp

Ook Editor adjustements (#2366)

2024-11-19 17:16:37 +01:00

portapack.cpp

Gpio modify v4 (#3266)

2026-07-10 21:37:41 +02:00

portapack.hpp

remove const temp measurement from core to the ext app. we don't need it (#3259)

2026-07-08 10:09:53 +08:00

qrcodegen.cpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

qrcodegen.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

radio_state.hpp

Added Freq to Radio State, only update specified App Settings, always Load/Save Settings (#1498)

2023-10-14 11:33:52 -05:00

radio.cpp

fix ADSB RX weak signal on pro (#3282)

2026-08-05 10:09:55 +02:00

radio.hpp

fix ADSB RX weak signal on pro (#3282)

2026-08-05 10:09:55 +02:00

receiver_model.cpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

receiver_model.hpp

Opt-in channel-power squelch for AM audio RX (#3315)

2026-09-14 20:54:54 +02:00

recent_entries.cpp

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

recent_entries.hpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

replay_thread.cpp

Oversample (#1336)

2023-08-02 21:59:26 +02:00

replay_thread.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

rf_path.cpp

Gpio modify v3 (#3238)

2026-07-02 10:05:34 +02:00

rf_path.hpp

Gpio modify v3 (#3238)

2026-07-02 10:05:34 +02:00

rtc_time.cpp

Sonde + map (#2879)

2025-11-26 19:13:21 +01:00

rtc_time.hpp

Clean_gcc_14_2_1_compiler_errors (#3206)

2026-05-31 17:34:30 +02:00

sd_card.cpp

Improve SD Card Status Display and Error Handling (#3079)

2026-03-06 20:05:44 +01:00

sd_card.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

serializer.cpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

serializer.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

shell.cpp

Move flashsize.h to build directory to avoid conflicts when switching between different builds (#3021)

2026-02-22 21:21:03 +01:00

shell.hpp

First version of rtcget and rtcset (#1727)

2024-01-06 09:15:59 +01:00

signal.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

spectrum_color_lut.cpp

Custom waterfall colors (#2617)

2025-04-11 10:46:04 +00:00

spectrum_color_lut.hpp

Custom waterfall colors (#2617)

2025-04-11 10:46:04 +00:00

string_format.cpp

Memory management improv.

2026-04-30 15:00:19 +02:00

string_format.hpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

theme.cpp

Standalone app api v3 (#2772)

2025-09-01 11:50:46 +02:00

theme.hpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

tone_key.cpp

fixed memory usage (#2380)

2024-11-22 09:54:34 +01:00

tone_key.hpp

fixed memory usage (#2380)

2024-11-22 09:54:34 +01:00

touch.cpp

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

touch.hpp

touchscreen threshold (sensitivity) auto detect (#2306)

2024-10-17 00:39:59 +08:00

transmitter_model.cpp

Gpio modify (#3229)

2026-06-19 07:48:55 +02:00

transmitter_model.hpp

PRALINE Tx and clock fix (Pr 3192 takeover (#3198) )

2026-05-31 12:44:40 +02:00

tuning.cpp

fix ADSB RX weak signal on pro (#3282)

2026-08-05 10:09:55 +02:00

tuning.hpp

fix ADSB RX weak signal on pro (#3282)

2026-08-05 10:09:55 +02:00

ui_baseband_stats_view.cpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

ui_baseband_stats_view.hpp

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

ui_external_items_menu_loader.cpp

Fix flashing (#3188)

2026-05-30 01:49:49 +02:00

ui_external_items_menu_loader.hpp

Fix flashing (#3188)

2026-05-30 01:49:49 +02:00

ui_navigation.cpp

#3288 (#3297)

2026-08-21 19:56:54 +02:00

ui_navigation.hpp

remove fake brightness feature (#3296)

2026-08-20 20:46:29 +02:00

ui_notifications.cpp

Memory management improv.

2026-04-30 15:00:19 +02:00

ui_notifications.hpp

Memory management improv.

2026-04-30 15:00:19 +02:00

ui_record_view.cpp

Memory management improv.

2026-04-30 15:00:19 +02:00

ui_record_view.hpp

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

ui_sd_card_debug.cpp

fix sd test app mem usage (#3101)

2026-03-17 15:42:10 +01:00

ui_sd_card_debug.hpp

Multi screen support, with dyn alignment (#2801)

2025-10-03 19:10:10 +02:00

ui_sd_card_status_view.cpp

Improve SD Card Status Display and Error Handling (#3079)

2026-03-06 20:05:44 +01:00

ui_sd_card_status_view.hpp

Improve SD Card Status Display and Error Handling (#3079)

2026-03-06 20:05:44 +01:00

unistroke.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00

usb_serial_asyncmsg.cpp

remove my dumb nicknames in files (#3254)

2026-07-07 11:04:34 +02:00

usb_serial_asyncmsg.hpp

remove my dumb nicknames in files (#3254)

2026-07-07 11:04:34 +02:00

usb_serial_cdc.c

Update hackrf submodule (#3174)

2026-05-13 14:53:54 +02:00

usb_serial_cdc.h

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

usb_serial_descriptor.c

Embedded friendly usb (#1817)

2024-01-27 19:33:08 +01:00

usb_serial_descriptor.h

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

usb_serial_device_to_host.c

reworked usb serial communication (#1766)

2024-01-13 18:05:29 +01:00

usb_serial_device_to_host.h

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

usb_serial_endpoints.c

Usb serial (#1648)

2023-12-17 17:20:35 +01:00

usb_serial_endpoints.h

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

usb_serial_event.cpp

Usb serial (#1648)

2023-12-17 17:20:35 +01:00

usb_serial_event.hpp

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

usb_serial_host_to_device.cpp

Add KISS TNC external app for APRS RX/TX over USB serial (#3078)

2026-03-10 10:40:27 +01:00

usb_serial_host_to_device.hpp

Add KISS TNC external app for APRS RX/TX over USB serial (#3078)

2026-03-10 10:40:27 +01:00

usb_serial_shell_filesystem.cpp

Fixes (#3032)

2026-02-24 11:23:41 +01:00

usb_serial_shell_filesystem.hpp

added crc32 command to usb shell (#1911)

2024-02-17 10:38:09 +01:00

usb_serial_shell.cpp

#3288 (#3297)

2026-08-21 19:56:54 +02:00

usb_serial_shell.hpp

I2cshell (#2348)

2024-11-08 11:46:27 +01:00

usb_serial_thread.cpp

initial USB serial thread integrated to BLE RX (#1651)

2023-12-19 22:20:13 +01:00

usb_serial_thread.hpp

reworked usb serial communication (#1766)

2024-01-13 18:05:29 +01:00

usb_serial.cpp

fixed usb serial not working after reconnect (#2196)

2024-07-17 21:17:42 +12:00

usb_serial.hpp

enforce #ifndef __HEADER_H instead of #pragma once, for code consitency and better portability (#2296)

2024-10-14 15:50:04 +02:00

view_factory_base.cpp

Fix flashing (#3188)

2026-05-30 01:49:49 +02:00

view_factory_base.hpp

Fix flashing (#3188)

2026-05-30 01:49:49 +02:00

view_factory.hpp

Fix flashing (#3188)

2026-05-30 01:49:49 +02:00

ymdata.hpp

Formatted code (#1007)

2023-05-19 08:16:05 +12:00