martes, 4 de abril de 2023

Así es una LIMPIA ESPIRITUAL *Increíble | MÉXICO - TEPOZTLÁN 🇲🇽 | 4K

Esta es la manera de reducir el ruido de fondo con Audacity con Pulse Audio en GNU/Linux

Buscaba información de cómo mejorar  la grabación de voz con Audacity, un editor de audio. Y encontré varios artículos que me han llevado a uno muy interesante, esto es grabar tu voz con un micrófono sin ese molesto ruido de fondo.  

Solamente hay que entrar en tu terminal de GNU/Linux como administrador:


root@debian:~#  gedit /etc/pulse/default.pa


El archivo default.pa contiene el siguiente texto. Al que hay que añadir las lineas de texto con fondo verde:


#!/usr/bin/pulseaudio -nF

#

# This file is part of PulseAudio.

#

# PulseAudio is free software; you can redistribute it and/or modify it

# under the terms of the GNU Lesser General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

#

# PulseAudio is distributed in the hope that it will be useful, but

# WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

# General Public License for more details.

#

# You should have received a copy of the GNU Lesser General Public License

# along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.


# This startup script is used only if PulseAudio is started per-user

# (i.e. not in system mode)


.fail


### Automatically restore the volume of streams and devices

load-module module-device-restore

load-module module-stream-restore

load-module module-card-restore


### Automatically augment property information from .desktop files

### stored in /usr/share/application

load-module module-augment-properties


### Should be after module-*-restore but before module-*-detect

load-module module-switch-on-port-available


### Load audio drivers statically

### (it's probably better to not load these drivers manually, but instead

### use module-udev-detect -- see below -- for doing this automatically)

#load-module module-alsa-sink

#load-module module-alsa-source device=hw:1,0

#load-module module-oss device="/dev/dsp" sink_name=output source_name=input

#load-module module-oss-mmap device="/dev/dsp" sink_name=output source_name=input

#load-module module-null-sink

#load-module module-pipe-sink


### Automatically load driver modules depending on the hardware available

.ifexists module-udev-detect.so

load-module module-udev-detect

.else

### Use the static hardware detection module (for systems that lack udev support)

load-module module-detect

.endif


### Automatically connect sink and source if JACK server is present

.ifexists module-jackdbus-detect.so

.nofail

load-module module-jackdbus-detect channels=2

.fail

.endif


### Automatically load driver modules for Bluetooth hardware

.ifexists module-bluetooth-policy.so

load-module module-bluetooth-policy

.endif


.ifexists module-bluetooth-discover.so

load-module module-bluetooth-discover

.endif


### Load several protocols

.ifexists module-esound-protocol-unix.so

load-module module-esound-protocol-unix

.endif

load-module module-native-protocol-unix


### Network access (may be configured with paprefs, so leave this commented

### here if you plan to use paprefs)

#load-module module-esound-protocol-tcp

#load-module module-native-protocol-tcp

#load-module module-zeroconf-publish


### Load the RTP receiver module (also configured via paprefs, see above)

#load-module module-rtp-recv


### Load the RTP sender module (also configured via paprefs, see above)

#load-module module-null-sink sink_name=rtp format=s16be channels=2 rate=44100 sink_properties="device.description='RTP Multicast Sink'"

#load-module module-rtp-send source=rtp.monitor


### Load additional modules from GSettings. This can be configured with the paprefs tool.

### Please keep in mind that the modules configured by paprefs might conflict with manually

### loaded modules.

.ifexists module-gsettings.so

.nofail

load-module module-gsettings

.fail

.endif



### Automatically restore the default sink/source when changed by the user

### during runtime

### NOTE: This should be loaded as early as possible so that subsequent modules

### that look up the default sink/source get the right value

load-module module-default-device-restore


### Make sure we always have a sink around, even if it is a null sink.

load-module module-always-sink


### Honour intended role device property

load-module module-intended-roles


### Automatically suspend sinks/sources that become idle for too long

load-module module-suspend-on-idle


### If autoexit on idle is enabled we want to make sure we only quit

### when no local session needs us anymore.

.ifexists module-console-kit.so

load-module module-console-kit

.endif

.ifexists module-systemd-login.so

load-module module-systemd-login

.endif


### Enable positioned event sounds

load-module module-position-event-sounds


### Cork music/video streams when a phone stream is active

load-module module-role-cork


### Modules to allow autoloading of filters (such as echo cancellation)

### on demand. module-filter-heuristics tries to determine what filters

### make sense, and module-filter-apply does the heavy-lifting of

### loading modules and rerouting streams.

load-module module-filter-heuristics

load-module module-filter-apply

load-module module-echo-cancel aec_args="analog_gain_control=0 digital_gain_control=0" source_name=noiseless


### Make some devices default

#set-default-sink output

#set-default-source input

set-default-source noiseless


A continuación, hay que escribir en el terminal de GNU/Linux el siguiente comando pero como usuario:


jesus@debian:~$ pulseaudio -k

Con el comando anterior reiniciamos pulseaudio, también podemos reiniciar la sesión en nuestra distribución de GNU/Linux, en mi caso particular es Debian. 


Ahora hay que buscar en el menú principal el "control de volumen de pulseaudio":

En "Dispositivos de entrada "tiene que estar marcada la opción de captura que pone "echo cancelled".


Y en "Grabación", mientras Audacity está grabando debería aparecer también la misma opción de captura que pone "echo cancelled"



Fuentes:


https://liberaturadio.org/audacity-editar-voces-podcast/

https://liberaturadio.org/microfono-sin-ruido-pilseaudio/

https://liberaturadio.org/pulseeffects-procesador-para-tu-radio/