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Institute of Technical Acoustics (ITA)
VAMatlab
Commits
f7becf20
Commit
f7becf20
authored
Aug 06, 2019
by
henryjandrew
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Plain Diff
fixed issues with example_ppa
parent
d0113c31
Changes
1
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1 changed file
with
52 additions
and
37 deletions
+52
-37
matlab/VA_example_ppa.m
matlab/VA_example_ppa.m
+52
-37
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matlab/VA_example_ppa.m
View file @
f7becf20
...
...
@@ -43,7 +43,7 @@ try
S
=
va
.
create_sound_source
(
'PPA_emitter'
);
%X = va.create_signal_source_buffer_from_file( 'WelcomeToVA.wav' );
X
=
va
.
create_signal_source_buffer_from_file
(
'
Full song - Vulfpeck - Dean Town
.wav'
);
X
=
va
.
create_signal_source_buffer_from_file
(
'
LKW Leerlauf 2
.wav'
);
va
.
set_signal_source_buffer_playback_action
(
X
,
'play'
)
va
.
set_signal_source_buffer_looping
(
X
,
true
);
...
...
@@ -59,34 +59,36 @@ catch
end
path_identifiers
=
containers
.
Map
(
'KeyType'
,
'char'
,
'ValueType'
,
'uint16'
);
%a map linking the path number to name
path_status
=
cell
(
1
);
%cell array indexed by path number containing a struct with onfo on path
all_path_names
=
cell
(
1
);
path_count
=
0
;
%The total number of paths, NOTE -NOT a count of paths in current frame, if paths are deleted, they are not removed from this count
source_str
=
struct
;
source_str
.
ID
=
S
;
receiver_str
=
struct
;
receiver_str
.
ID
=
R
;
%% Run synchronized scene update & audio processing simulation/auralization
frame_rate
=
128
/
44100
;
% here: depends on block size and sample rate
manual_clock
=
0
;
if
~
dry_run
va
.
set_core_clock
(
0
);
end
N
=
numel
(
file_listing
);
disp
(
[
'Simulation result duration: '
num2str
(
N
*
frame_rate
)
' s'
]
)
h
=
waitbar
(
0
,
'Hold on, running auralization'
);
run_data
=
cell
(
3
,
N
);
h
=
waitbar
(
0
,
'Hold on, running simulation of path data for each frame'
);
% Iterate over frames
n_continue
=
1
;
for
n
=
n_continue
:
N
for
n
=
n_continue
:
N
%loop over frames
all_path_name
=
[];
path_number
=
1
;
% Load propagation paths for current frame
ppa_file_path
=
fullfile
(
file_listing
(
n
)
.
folder
,
file_listing
(
n
)
.
name
);
pps
=
ita_propagation_load_paths
(
ppa_file_path
);
%pps = struct containing the current time frame
pps
=
ita_propagation_paths_add_identifiers
(
pps
);
if
n
==
1
if
n
==
n_continue
pps_new
=
pps
;
pps_del
=
[];
pps_common
=
[];
...
...
@@ -105,38 +107,35 @@ for n = n_continue:N
receiver_pos
=
pps
(
1
)
.
propagation_anchors
{
end
}
.
interaction_point
;
% OpenGL coordinates?! -> transform using
end
source_pos_OpenGL
=
ita_matlab2openGL
(
source_pos
(
1
:
3
)
'
);
receiver_pos_OpenGL
=
ita_matlab2openGL
(
receiver_pos
(
1
:
3
)
'
);
% Update receiver (last anchor)
if
~
dry_run
va
.
set_sound_source_position
(
S
,
source_pos_OpenGL
);
va
.
set_sound_receiver_position
(
R
,
source_pos_OpenGL
);
end
source_str
.
position
=
source_pos
;
receiver_str
.
position
=
receiver_pos
;
run_data
{
2
,
n
}
=
source_str
;
run_data
{
3
,
n
}
=
receiver_str
;
paths_update
=
struct
();
% Delete non-available paths
for
p
=
1
:
numel
(
pps_del
)
pu
=
struct
();
% Path update
pu
.
source
=
S
;
pu
.
receiver
=
R
;
pu
.
identifier
=
pps_del
(
p
)
.
identifier
;
pu
.
delete
=
true
;
paths_update
.
(
strcat
(
'path_'
,
pu
.
identifier
)
)
=
pu
;
end
for
p
=
1
:
numel
(
pps_new
)
pp
=
pps
(
p
);
% Propagation path
pp
=
pps
_new
(
p
);
% Propagation path
pu
=
struct
();
% Path update
% Assemble DSP settings (gain, delay & filter coefficients)
pu
.
source
=
S
;
pu
.
receiver
=
R
;
pu
.
identifier
=
pp
.
identifier
;
path_count
=
path_count
+
1
;
all_path_names
{
path_count
}
=
pp
.
identifier
;
[
frequency_mags
,
gain
,
delay
,
valid_p
]
=
ita_propagation_path_get_data
(
pp
,
f
,
c
);
...
...
@@ -158,13 +157,12 @@ for n = n_continue:N
pu
.
delete
=
false
;
pu
.
audible
=
true
;
paths_update
.
(
strcat
(
'path_'
,
pu
.
identifier
)
)
=
pu
;
paths_update
.
(
strcat
(
'path_'
,
pu
.
identifier
)
)
=
pu
;
end
for
p
=
1
:
numel
(
pps_common
)
pp
=
pps
(
p
);
% Propagation path
pp
=
pps
_common
(
p
);
% Propagation path
pu
=
struct
();
% Path update
% Assemble DSP settings (gain, delay & filter coefficients)
...
...
@@ -173,7 +171,6 @@ for n = n_continue:N
pu
.
identifier
=
pp
.
identifier
;
[
frequency_mags
,
gain
,
delay
,
valid_p
]
=
ita_propagation_path_get_data
(
pp
,
f
,
c
);
ita_res
if
~
valid_p
%catch for error in ita_propagation_path_get_data
warning
(
'Error in ita_propagation_path_get_data, found invalid path
''
%s
''
, skipping'
,
pp
.
identifier
);
...
...
@@ -194,27 +191,45 @@ for n = n_continue:N
pu
.
audible
=
true
;
paths_update
.
(
strcat
(
'path_'
,
pu
.
identifier
)
)
=
pu
;
end
if
~
dry_run
% Update all propagation paths
va
.
set_rendering_module_parameters
(
'MyBinauralOutdoorNoise'
,
paths_update
);
end
run_data
{
1
,
n
}
=
paths_update
;
%save data to struct
end
close
(
h
)
save
(
'example_ppa_output_data.m'
,
'run_data'
,
'all_path_names'
);
%save variables to file
disp
(
'Finished generating path data for every frame. Data is saved in struct "run_data".'
);
%% Run VA simulation
if
~
dry_run
manual_clock
=
0
;
va
.
set_core_clock
(
0
);
h
=
waitbar
(
0
,
'Hold on, running auralisation using generated data'
);
for
n
=
n_continue
:
N
% Update all propagation paths
source_pos_OpenGL
=
ita_matlab2openGL
(
run_data
{
2
,
n
}
.
position
(
1
:
3
)
'
);
receiver_pos_OpenGL
=
ita_matlab2openGL
(
run_data
{
3
,
n
}
.
position
(
1
:
3
)
'
);
% Update receiver (last anchor)
va
.
set_sound_source_position
(
S
,
source_pos_OpenGL
);
va
.
set_sound_receiver_position
(
R
,
receiver_pos_OpenGL
);
va
.
set_rendering_module_parameters
(
'MyBinauralOutdoorNoise'
,
run_data
{
1
,
n
}
);
if
~
dry_run
% Increment core clock
manual_clock
=
manual_clock
+
frame_rate
;
va
.
call_module
(
'manualclock'
,
struct
(
'time'
,
manual_clock
)
);
% Process audio chain by incrementing one block
va
.
call_module
(
'virtualaudiodevice'
,
struct
(
'trigger'
,
true
)
);
waitbar
(
n
/
N
)
end
waitbar
(
n
/
N
)
close
(
h
)
end
close
(
h
)
if
va
.
get_connected
va
.
disconnect
...
...
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