Cinaed,
Just as one has to do with getting a file from Github, you have to click
on the 'Raw' button before you copy the file with your text editor. Once
you do that, you will have the correct format.
For good measure, attached is the grc file.
BTW, Ryan gave me the info I needed about the PulseAudio page.
Barry Duggan KV4FV
On 7/3/20 4:28 AM, Cinaed Simson wrote:
Hi Barry - the GRC isn't an image or binary file - it's a text based XML
file.
Send it as an attachment to your email.
If I recall correctly, uploading a GRC file to pastbin.com and then
downloading it destroys the flow graph (the XML formatting) and reduces
the GRC flowgraph to a stack of text from the blocks.
Try it.
-- Cinaed
On 7/2/20 4:26 AM, Barry Duggan wrote:
Hi Cinaed,
The Pluto_NFM.grc is in https://pastebin.com/XZN0dK6x I have found
that reducing the buffer size on the Pluto almost eliminated the audio
underruns.
So what I am left with is needing to know what is wrong with the
procedure in
https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Monitoring_the_output_of_your_system
I have been doing a lot of documentation updates and would like to
correct / improve that page.
Thanks for your help.
---
Barry Duggan KV4FV
On 7/1/20 4:53 PM, Cinaed Simson wrote:
Hi Barry - can you post the GRC file (no images please) for when the
audio doesn't work correctly?
-- Cinaed
On 7/1/20 5:43 AM, Barry Duggan wrote:
Hi Cinaed,
Thank you for your response. Yes, I have tried those and the
"hw:CARD=Generic,DEV=0" works well for most flowgraphs. I obtained
that from the 'aplay -L' command.
Let me reiterate my request: In exploring the audio problems, I
followed the instructions in
https://wiki.gnuradio.org/index.php/ALSAPulseAudio#Monitoring_the_output_of_your_system
and it gave the error I cited. So what I want to know is: Did I do
something wrong, or is the procedure not correct?
I need someone who is familiar with the ALSA and PulseAudio software
to look at this.
Thanks.
.
options:
parameters:
author: ''
category: '[GRC Hier Blocks]'
cmake_opt: ''
comment: ''
copyright: ''
description: ''
gen_cmake: 'On'
gen_linking: dynamic
generate_options: qt_gui
hier_block_src_path: '.:'
id: Pluto_NFM
max_nouts: '0'
output_language: python
placement: (0,0)
qt_qss_theme: ''
realtime_scheduling: ''
run: 'True'
run_command: '{python} -u {filename}'
run_options: prompt
sizing_mode: fixed
thread_safe_setters: ''
title: Pluto 2 meter NB FM
window_size: (1536,1024)
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [16, 12.0]
rotation: 0
state: enabled
blocks:
- name: rf_decim
id: variable
parameters:
comment: ''
value: '5'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [272, 12.0]
rotation: 0
state: true
- name: rf_gain
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: RF Gain
min_len: '200'
orient: Qt.Horizontal
rangeType: float
start: '0'
step: '1'
stop: '70'
value: '50'
widget: slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [504, 12.0]
rotation: 0
state: true
- name: samp_rate
id: variable
parameters:
comment: ''
value: '1920000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [184, 12.0]
rotation: 0
state: enabled
- name: sq_lvl
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: Squelch
min_len: '200'
orient: Qt.Horizontal
rangeType: float
start: '-100'
step: '5'
stop: '0'
value: '-50'
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [624, 12.0]
rotation: 0
state: enabled
- name: tuning
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: Tuning
min_len: '200'
orient: Qt.Horizontal
rangeType: float
start: 144.0e6
step: 1.0e3
stop: 148.0e6
value: 146.94e6
widget: counter_slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [360, 12.0]
rotation: 0
state: enabled
- name: volume
id: variable_qtgui_range
parameters:
comment: ''
gui_hint: ''
label: Volume
min_len: '200'
orient: Qt.Horizontal
rangeType: float
start: '0'
step: '0.1'
stop: '1.00'
value: '0.3'
widget: slider
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [744, 12.0]
rotation: 0
state: enabled
- name: analog_nbfm_rx_0
id: analog_nbfm_rx
parameters:
affinity: ''
alias: ''
audio_rate: '48000'
comment: ''
max_dev: 5e3
maxoutbuf: '0'
minoutbuf: '0'
quad_rate: (int)(samp_rate/rf_decim)
tau: 75e-6
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [672, 212.0]
rotation: 0
state: enabled
- name: analog_simple_squelch_cc_0
id: analog_simple_squelch_cc
parameters:
affinity: ''
alias: ''
alpha: '1'
comment: ''
maxoutbuf: '0'
minoutbuf: '0'
threshold: sq_lvl
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [488, 228.0]
rotation: 0
state: enabled
- name: audio_sink_0
id: audio_sink
parameters:
affinity: ''
alias: ''
comment: ''
device_name: hw:CARD=Generic,DEV=0
num_inputs: '1'
ok_to_block: 'False'
samp_rate: '48000'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [720, 340.0]
rotation: 0
state: enabled
- name: blocks_multiply_const_vxx_0_0
id: blocks_multiply_const_vxx
parameters:
affinity: ''
alias: ''
comment: Volume
const: volume
maxoutbuf: '0'
minoutbuf: '0'
type: float
vlen: '1'
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [552, 348.0]
rotation: 0
state: enabled
- name: iio_pluto_source_0
id: iio_pluto_source
parameters:
affinity: ''
alias: ''
auto_filter: 'True'
bandwidth: '1000000'
bbdc: 'True'
buffer_size: '8192'
comment: ''
filter: ''
frequency: int(tuning)
gain1: '''manual'''
manual_gain1: rf_gain
maxoutbuf: '0'
minoutbuf: '0'
quadrature: 'True'
rfdc: 'True'
samplerate: samp_rate
uri: ip:192.168.3.1
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [64, 148.0]
rotation: 0
state: true
- name: low_pass_filter_0
id: low_pass_filter
parameters:
affinity: ''
alias: ''
beta: '6.76'
comment: ''
cutoff_freq: '6000'
decim: rf_decim
gain: '1'
interp: '1'
maxoutbuf: '0'
minoutbuf: '0'
samp_rate: samp_rate
type: fir_filter_ccf
width: '2000'
win: firdes.WIN_HAMMING
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [296, 188.0]
rotation: 0
state: enabled
- name: qtgui_sink_x_0
id: qtgui_sink_x
parameters:
affinity: ''
alias: ''
bw: samp_rate
comment: ''
fc: tuning
fftsize: '1024'
gui_hint: ''
maxoutbuf: '0'
minoutbuf: '0'
name: '""'
plotconst: 'True'
plotfreq: 'True'
plottime: 'True'
plotwaterfall: 'True'
rate: '10'
showports: 'False'
showrf: 'True'
type: complex
wintype: firdes.WIN_BLACKMAN_hARRIS
states:
bus_sink: false
bus_source: false
bus_structure: null
coordinate: [296, 348.0]
rotation: 0
state: true
connections:
- [analog_nbfm_rx_0, '0', blocks_multiply_const_vxx_0_0, '0']
- [analog_simple_squelch_cc_0, '0', analog_nbfm_rx_0, '0']
- [blocks_multiply_const_vxx_0_0, '0', audio_sink_0, '0']
- [iio_pluto_source_0, '0', low_pass_filter_0, '0']
- [iio_pluto_source_0, '0', qtgui_sink_x_0, '0']
- [low_pass_filter_0, '0', analog_simple_squelch_cc_0, '0']
metadata:
file_format: 1
