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-rw-r--r--theremine.m27
-rw-r--r--theremine.m~180
2 files changed, 9 insertions, 198 deletions
diff --git a/theremine.m b/theremine.m
index 11f0dc0..a9b908b 100644
--- a/theremine.m
+++ b/theremine.m
@@ -61,18 +61,11 @@ while gesture_count < (1 * (const_frames_per_second - const_calc_offset))
frame = matleap_frame;
handCount = size(frame.hands);
- if isequal(zero_hands, handCount)
- gesture_count = 0;
-
- % slowly lower volume if no hand is there
- y_one = y_one * const_fade_speed;
- y_two = y_two * const_fade_speed;
-
- % TODO
- elseif isequal(one_hand, handCount)
- % fade hand two out
- y_two = y_two * const_fade_speed;
-
+ % slowly decrease volume
+ y_one = y_one * const_fade_speed;
+ y_two = y_two * const_fade_speed;
+
+ if isequal(one_hand, handCount)
pos = frame.hands(1).palm.position;
%pos = frame.hands(1).palm.stabilized_position;
@@ -105,22 +98,20 @@ while gesture_count < (1 * (const_frames_per_second - const_calc_offset))
x_two = pos(1);
y_two = pos(2);
else
- disp("That should not happen:");
- disp(handCount);
- return;
+ % no hands, do nothing (or more than 2 (how?! :D))
+ gesture_count = 0;
end
% play current sound
[signal_one, offset_one] = get_theremin_sound_bit(x_one, y_one, offset_one, signal);
[signal_two, offset_two] = get_theremin_sound_bit(x_two, y_two, offset_two, signal);
full_signal = signal_one + signal_two;
+
if deviceWriter(full_signal(:)) ~= 0
disp("Buffer ran empty!");
end
- complete_signal = [complete_signal full_signal];
- % enforce frame rate, leaving a bit of room for calculation
- %java.lang.Thread.sleep((1/(const_frames_per_second - const_calc_offset)) * 1000);
+ complete_signal = [complete_signal full_signal];
end
release(deviceWriter)
diff --git a/theremine.m~ b/theremine.m~
deleted file mode 100644
index 1950a36..0000000
--- a/theremine.m~
+++ /dev/null
@@ -1,180 +0,0 @@
-clear;
-
-%%%%%%%%
-% "constants" %
-%%%%%%%%
-
-% how many updates per second, determines the length of audio snippets
-const_frames_per_second = 100;
-
-const_Fs = 44100; % sampling rate in Hz
-const_te = 1/const_frames_per_second; % signal duration in seconds
-const_samples_per_frame = ceil(const_Fs * const_te);
-const_sample_range = 0:const_samples_per_frame-1;
-
-% factor the last read frame is multiplied by
-const_fade_speed = 0.975;
-
-% signal "generator"
-signal = @(freq) (freq ./ const_Fs .* 2 .* pi .* const_sample_range);
-
-% time given for calculation
-const_calc_offset = 0;
-
-% dimensions to use for detecting number of hands in frame
-zero_hands = size(NaN(0,0));
-one_hand = size(NaN(1,1));
-two_hands = size(NaN(1,2));
-
-deviceWriter = audioDeviceWriter('SampleRate', const_Fs, 'SupportVariableSizeInput', true, 'BufferSize', 3 * const_samples_per_frame);
-
-%%%%%%%%%%%%%%%%%%%
-% init matleap by calling for first frame %
-%%%%%%%%%%%%%%%%%%%
-matleap_frame
-
-% runtime variables
-P = NaN(1000000,3);
-count = 1;
-done = false;
-
-x_one = 0;
-x_two = 0;
-
-y_one = 0;
-y_two = 0;
-
-offset_one = 0;
-offset_two = 0;
-
-signal_one = sin(signal(0));
-signal_two = sin(signal(0));
-
-full_signal = signal_one + signal_two;
-complete_signal = full_signal;
-
-% time gestures, used for program termination
-gesture_count = 0;
-
-%while count < 100000 && gesture_count < 3
-while gesture_count < (1 * (const_frames_per_second - const_calc_offset))
- frame = matleap_frame;
- handCount = size(frame.hands);
-
- if isequal(zero_hands, handCount)
- gesture_count = 0;
-
- % slowly lower volume if no hand is there
- [signal_one, offset_one] = get_theremin_sound_bit(x_one, y_one * const_fade_speed, offset_one, signal);
- [signal_two, offset_two] = get_theremin_sound_bit(x_two, y_two * const_fade_speed, offset_two, signal);
-
- % TODO
- elseif isequal(one_hand, handCount)
- % fade hand two out
- [signal_two, offset_two] = get_theremin_sound_bit(x_two, y_two * const_fade_speed, offset_two, signal);
-
- pos = frame.hands(1).palm.position;
- %pos = frame.hands(1).palm.stabilized_position;
-
- x_one = pos(1);
- y_one = pos(2);
-
- [signal_one, offset_one] = get_theremin_sound_bit(x_one, y_one, offset_one, signal);
- P(count, 1:3) = pos;
- count = count + 1;
-
- if frame.gesture > 0
- gesture_count = gesture_count + 1;
- else
- gesture_count = 0;
- end
- elseif isequal(two_hands, handCount)
- gesture_count = 0;
-
- pos = frame.hands(1).palm.position;
- %pos = frame.hands(1).palm.stabilized_position;
-
- x_one = pos(1);
- y_one = pos(2);
-
- [signal_two, offset_two] = get_theremin_sound_bit(x_two, y_two * const_fade_speed, offset_two, signal);
- P(count, 1:3) = pos;
- count = count + 1;
-
- pos = frame.hands(2).palm.position;
- %pos = frame.hands(2).palm.stabilized_position;
-
- x_two = pos(1);
- y_two = pos(2);
-
- [signal_two, offset_two] = get_theremin_sound_bit(x_two, y_two, offset_two, signal);
- else
- disp("That should not happen:");
- disp(handCount);
- return;
- end
-
- % play current sound
- full_signal = signal_one + signal_two;
- if deviceWriter(full_signal(:)) ~= 0
- disp("Buffer ran empty!");
- end
- complete_signal = [complete_signal full_signal];
-
- % enforce frame rate, leaving a bit of room for calculation
- %java.lang.Thread.sleep((1/(const_frames_per_second - const_calc_offset)) * 1000);
-end
-
-release(deviceWriter)
-
-%theremin_player = audioplayer(complete_signal, const_Fs);
-%play(theremin_player);
-
-% extract values
-x = P(:,1); % links (-) rechconst_Ts (+) (LED zu uns)
-y = P(:,2); % oben unten
-z = P(:,3); % vorne (+) hinten (-) (LED zu uns)
-
-% plot
-figure("Position",[0,0, 1200, 2400]);
-t = tiledlayout(4,1);
-
-nexttile;
-plot(x);
-ylabel('left right');
-
-nexttile;
-plot(y);
-ylabel('height');
-
-nexttile;
-plot(z);
-ylabel('depth');
-
-nexttile;
-plot3(z,x,y);
-xlabel('depth');
-ylabel('left right');
-zlabel('height');
-
-function [sound,offset] = get_theremin_sound_bit(x, y, offset, generator)
- % finding ranges for x and y:
- %'x'
- %min(x)
- %max(x)
- %'y'
- %min(y)
- %max(y)
- % --> -300 < x < 300
- % --> 0 < y < 600
-
- % therefore
- volume = y / 2000;
- frequency = max(0.0001, (x + 400) / 1200) * 3000; % https://web.physics.ucsb.edu/~lecturedemonstrations/Composer/Pages/60.17.html # How it works
-
- base = generator(frequency) + offset;
-
- offset = base(end);
-
- sound = sin(base) .* volume;
-end \ No newline at end of file
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-04-19 02:27:08 +0000