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IntrinsicImaging/WidgetAudioStimuli.m
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| classdef WidgetAudioStimuli < handle | |
| %WIDGETAUDIOSTIMULI generates user defined audio stimuli | |
| % | |
| % GUI Widget for | |
| % user defined audio stimuli | |
| % choose between monotones, linear or exponential sweeps | |
| % load external audio file | |
| % combine audio stimuli in trains | |
| % plot frequency/time spectrogram | |
| % | |
| % requires: | |
| % uiGridLayout.m | |
| % | |
| % Georgi Tushev | |
| % sciclist@brain.mpg.de | |
| % Max-Planck Institute For Brain Research | |
| % | |
| properties | |
| audio | |
| end | |
| properties (Access = private) | |
| duration | |
| freqBase | |
| freqThresh | |
| pulses | |
| offset | |
| tdata | |
| ydata | |
| extern | |
| tune | |
| end | |
| properties (Access = protected) | |
| ui_parent | |
| ui_grid | |
| ui_panel | |
| ui_edit_duration | |
| ui_edit_freqBase | |
| ui_edit_freqThresh | |
| ui_edit_pulses | |
| ui_edit_offset | |
| ui_popup_chirp | |
| ui_checkbox_train | |
| ui_checkbox_extern | |
| ui_pushbutton_load | |
| ui_pushbutton_spectrum | |
| ui_pushbutton_play | |
| ui_text_extern | |
| ui_spectrogram | |
| end | |
| properties (Constant = true, Access = private, Hidden = true) | |
| UIWINDOW_SIZE = [1, 1, 256, 211]; | |
| GRID_VGAP = [12, 2, 5]; | |
| GRID_HGAP = [5, 2, 5]; | |
| BACKGROUND_COLOR = [1, 1, 1]; | |
| FOREGROUND_COLOR = [0.5, 0.5, 0.5]; | |
| PUSHBUTTON_SIZE = [1, 1, 90, 26]; | |
| EDITBOX_SIZE = [1, 1, 60, 20]; | |
| POPUP_SIZE = [1, 1, 90, 20]; | |
| CHECKBOX_SIZE = [1, 1, 90, 20]; | |
| CHIRP_TYPE = {'pure', 'linear', 'exp'}; | |
| SAMPLING_FREQ = 44100; | |
| FADE_TIME = 0.05; | |
| MIN_FREQUENCY = 1000; | |
| MAX_FREQUENCY = 25000; | |
| MAX_PULSES = 50; | |
| end | |
| %% --- constructor / destructor --- %% | |
| methods | |
| function obj = WidgetAudioStimuli(varargin) | |
| %WIDGETAUDIOSTIMULI class constructor | |
| parserObj = inputParser; | |
| addParameter(parserObj, 'Parent', [], @isgraphics); | |
| parse(parserObj, varargin{:}); | |
| if isempty(parserObj.Results.Parent) | |
| obj.ui_parent = figure(... | |
| 'Visible', 'on',... | |
| 'Tag', 'hAudioStimuli',... | |
| 'Name', 'Audio Stimuli',... | |
| 'MenuBar', 'none',... | |
| 'ToolBar', 'none',... | |
| 'NumberTitle', 'off',... | |
| 'Color', obj.BACKGROUND_COLOR,... | |
| 'Resize', 'off',... | |
| 'Units', 'pixels',... | |
| 'Position', obj.UIWINDOW_SIZE,... | |
| 'CloseRequestFcn', @obj.fcnCallback_close); | |
| movegui(obj.ui_parent, 'northwest'); | |
| else | |
| obj.ui_parent = parserObj.Results.Parent; | |
| end | |
| % set default properties | |
| obj.defaults(); | |
| % render user interface | |
| obj.render(); | |
| % compose audio | |
| obj.compose(); | |
| end | |
| function obj = dispose(obj) | |
| %DISPOSE class destructor | |
| % remove spectrogram figures | |
| if isgraphics(obj.ui_spectrogram, 'figure') | |
| delete(obj.ui_spectrogram); | |
| end | |
| % remove audio player object | |
| if isa(obj.audio, 'audioplayer') | |
| delete(obj.audio); | |
| end | |
| % remove user interface grid | |
| if isa(obj.ui_grid, 'uiGridLayout') | |
| delete(obj.ui_grid); | |
| end | |
| % check if parent is figure or was inherit | |
| if isgraphics(obj.ui_parent, 'figure') | |
| delete(obj.ui_parent); | |
| end | |
| % dispose class object | |
| delete(obj); | |
| end | |
| function obj = defaults(obj) | |
| %DEFAULTS set default values for class properties | |
| % default properties | |
| obj.duration = 0.1; | |
| obj.freqBase = 5000; | |
| obj.freqThresh = 15000; | |
| obj.pulses = 5; | |
| obj.offset = 0.1; | |
| obj.tune = []; | |
| obj.extern = []; | |
| end | |
| function obj = render(obj) | |
| %RENDER create user interface | |
| %%% --- create widget panel --- %%% | |
| obj.ui_panel = uipanel(... | |
| 'Parent', obj.ui_parent,... | |
| 'Title', 'Audio Stimuli',... | |
| 'TitlePosition', 'lefttop',... | |
| 'BorderType', 'line',... | |
| 'HighlightColor', obj.FOREGROUND_COLOR,... | |
| 'ForegroundColor', obj.FOREGROUND_COLOR,... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'normalized',... | |
| 'Position', [0, 0, 1, 1],... | |
| 'Units', 'pixels'); | |
| %%% --- create grid object --- %%% | |
| obj.ui_grid = uiGridLayout(... | |
| 'Parent', obj.ui_panel,... | |
| 'VGrid', 7,... | |
| 'HGrid', 4,... | |
| 'VGap', obj.GRID_VGAP,... | |
| 'HGap', obj.GRID_HGAP); | |
| %%% --- add UI elements --- %%% | |
| ui_text = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'duration [sec]',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 1, 'HIndex', 1:2)); | |
| obj.ui_grid.align(ui_text,... | |
| 'VIndex', 1,... | |
| 'HIndex', 1:2,... | |
| 'Anchor', 'east'); | |
| obj.ui_edit_duration = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'edit',... | |
| 'String', sprintf('%.2f', obj.duration),... | |
| 'Callback', @obj.fcnCallback_parse,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.EDITBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_edit_duration,... | |
| 'VIndex', 1,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'west'); | |
| ui_text = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'freq.range [Hz]',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 2, 'HIndex', 1:2)); | |
| obj.ui_grid.align(ui_text,... | |
| 'VIndex', 2,... | |
| 'HIndex', 1:2,... | |
| 'Anchor', 'east'); | |
| obj.ui_edit_freqBase = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'edit',... | |
| 'String', sprintf('%d', obj.freqBase),... | |
| 'Callback', @obj.fcnCallback_parse,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.EDITBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_edit_freqBase,... | |
| 'VIndex', 2,... | |
| 'HIndex', 3,... | |
| 'Anchor', 'west'); | |
| obj.ui_edit_freqThresh = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'edit',... | |
| 'String', sprintf('%d', obj.freqThresh),... | |
| 'Enable', 'off',... | |
| 'Callback', @obj.fcnCallback_parse,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.EDITBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_edit_freqThresh,... | |
| 'VIndex', 2,... | |
| 'HIndex', 4,... | |
| 'Anchor', 'west'); | |
| ui_text = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'chirp function',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 3, 'HIndex', 1:2)); | |
| obj.ui_grid.align(ui_text,... | |
| 'VIndex', 3,... | |
| 'HIndex', 1:2,... | |
| 'Anchor', 'east'); | |
| obj.ui_popup_chirp = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'popup',... | |
| 'String', obj.CHIRP_TYPE,... | |
| 'Value', 1,... | |
| 'Callback', @obj.fcnCallback_chirp,... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.POPUP_SIZE); | |
| obj.ui_grid.align(obj.ui_popup_chirp,... | |
| 'VIndex', 3,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| obj.ui_checkbox_train = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'checkbox',... | |
| 'String', 'use train',... | |
| 'Value', 1,... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Callback', @obj.fcnCallback_checkTrain,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.CHECKBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_checkbox_train,... | |
| 'VIndex', 4,... | |
| 'HIndex', 1:2,... | |
| 'Anchor', 'center'); | |
| obj.ui_checkbox_extern = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'checkbox',... | |
| 'String', 'use extern',... | |
| 'Value', 0,... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Callback', @obj.fcnCallback_checkExtern,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.CHECKBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_checkbox_extern,... | |
| 'VIndex', 4,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| ui_text = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'pulses',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 5, 'HIndex', 1)); | |
| obj.ui_grid.align(ui_text,... | |
| 'VIndex', 5,... | |
| 'HIndex', 1,... | |
| 'Anchor', 'east'); | |
| obj.ui_edit_pulses = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'edit',... | |
| 'String', sprintf('%d', obj.pulses),... | |
| 'Enable', 'on',... | |
| 'Callback', @obj.fcnCallback_parse,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.EDITBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_edit_pulses,... | |
| 'VIndex', 5,... | |
| 'HIndex', 2,... | |
| 'Anchor', 'west'); | |
| ui_text = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'offset [sec]',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 6, 'HIndex', 1)); | |
| obj.ui_grid.align(ui_text,... | |
| 'VIndex', 6,... | |
| 'HIndex', 1,... | |
| 'Anchor', 'east'); | |
| obj.ui_edit_offset = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'edit',... | |
| 'String', sprintf('%.2f', obj.offset),... | |
| 'Enable', 'on',... | |
| 'Callback', @obj.fcnCallback_parse,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.EDITBOX_SIZE); | |
| obj.ui_grid.align(obj.ui_edit_offset,... | |
| 'VIndex', 6,... | |
| 'HIndex', 2,... | |
| 'Anchor', 'west'); | |
| obj.ui_pushbutton_load = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'pushbutton',... | |
| 'String', 'Load',... | |
| 'Enable', 'off',... | |
| 'Callback', @obj.fcnCallback_load,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.PUSHBUTTON_SIZE); | |
| obj.ui_grid.align(obj.ui_pushbutton_load,... | |
| 'VIndex', 5,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| obj.ui_text_extern = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'text',... | |
| 'String', 'load sound file',... | |
| 'Enable', 'off',... | |
| 'BackgroundColor', obj.BACKGROUND_COLOR,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.ui_grid.getGrid('VIndex', 6, 'HIndex', 3:4)); | |
| obj.ui_grid.align(obj.ui_text_extern,... | |
| 'VIndex', 6,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| obj.ui_pushbutton_spectrum = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'pushbutton',... | |
| 'String', 'Spectrum',... | |
| 'Callback', @obj.fcnCallback_spectrum,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.PUSHBUTTON_SIZE); | |
| obj.ui_grid.align(obj.ui_pushbutton_spectrum,... | |
| 'VIndex', 7,... | |
| 'HIndex', 1:2,... | |
| 'Anchor', 'center'); | |
| obj.ui_pushbutton_play = uicontrol(... | |
| 'Parent', obj.ui_panel,... | |
| 'Style', 'pushbutton',... | |
| 'String', 'Play',... | |
| 'Callback', @obj.fcnCallback_play,... | |
| 'Units', 'pixels',... | |
| 'Position', obj.PUSHBUTTON_SIZE); | |
| obj.ui_grid.align(obj.ui_pushbutton_play,... | |
| 'VIndex', 7,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| end | |
| function obj = enable(obj, varstate) | |
| %ENABLE toggle on/off enable state | |
| if strcmp('on', varstate) || strcmp('off', varstate) | |
| handles = [obj.ui_edit_duration,... | |
| obj.ui_edit_freqBase,... | |
| obj.ui_edit_freqThresh,... | |
| obj.ui_edit_pulses,... | |
| obj.ui_edit_offset,... | |
| obj.ui_popup_chirp,... | |
| obj.ui_checkbox_train,... | |
| obj.ui_checkbox_extern,... | |
| obj.ui_pushbutton_load,... | |
| obj.ui_pushbutton_spectrum,... | |
| obj.ui_pushbutton_play]; | |
| set(handles, 'Enable', varstate); | |
| % check a chirp function condition | |
| if get(obj.ui_popup_chirp, 'Value') == 1 | |
| set(obj.ui_edit_freqThresh, 'Enable', 'off'); | |
| end | |
| end | |
| end | |
| end | |
| %% --- callback methods --- %% | |
| methods | |
| function obj = fcnCallback_close(obj, ~, ~) | |
| %FCNCALLBACK_CLOSE user request on destructor | |
| obj.dispose(); | |
| end | |
| function obj = fcnCallback_parse(obj, hSrc, ~) | |
| %FCNCALLBACK_PARSE parse edit box | |
| % parse edin box | |
| varchar = get(hSrc, 'String'); | |
| varnum = str2double(regexp(varchar, '[0-9]+\.?[0-9]*', 'match')); | |
| varnum(isempty(varnum)) = 0; | |
| % assign to property | |
| switch hSrc | |
| case obj.ui_edit_duration | |
| set(obj.ui_edit_duration, 'String', sprintf('%.2f', varnum)); | |
| obj.duration = varnum; | |
| obj.compose(); | |
| case obj.ui_edit_freqBase | |
| varnum = setRange(varnum, obj.MIN_FREQUENCY, obj.MAX_FREQUENCY); | |
| set(obj.ui_edit_freqBase, 'String', sprintf('%d', varnum)); | |
| obj.freqBase = varnum; | |
| obj.compose(); | |
| case obj.ui_edit_freqThresh | |
| varnum = setRange(varnum, obj.MIN_FREQUENCY, obj.MAX_FREQUENCY); | |
| set(obj.ui_edit_freqThresh, 'String', sprintf('%d', varnum)); | |
| obj.freqThresh = varnum; | |
| obj.compose(); | |
| case obj.ui_edit_pulses | |
| varnum = setRange(varnum, 1, obj.MAX_PULSES); | |
| set(obj.ui_edit_pulses, 'String', sprintf('%d', varnum)); | |
| obj.pulses = varnum; | |
| obj.compile(); | |
| case obj.ui_edit_offset | |
| set(obj.ui_edit_offset, 'String', sprintf('%.2f', varnum)); | |
| obj.offset = varnum; | |
| obj.compile(); | |
| end | |
| end | |
| function obj = fcnCallback_chirp(obj, ~, ~) | |
| %FCNCALLBACK_CHIRP | |
| if get(obj.ui_popup_chirp, 'Value') == 1 | |
| set(obj.ui_edit_freqThresh, 'Enable', 'off'); | |
| else | |
| set(obj.ui_edit_freqThresh, 'Enable', 'on'); | |
| end | |
| obj.compose(); | |
| end | |
| function obj = fcnCallback_checkTrain(obj, ~, ~) | |
| %FCNCALLBACK_CHECKTRAIN callback on check box click | |
| if get(obj.ui_checkbox_train, 'Value') == 1 | |
| varstate = 'on'; | |
| else | |
| varstate = 'off'; | |
| obj.pulses = 1; | |
| obj.offset = 0; | |
| set(obj.ui_edit_pulses, 'String', sprintf('%d', obj.pulses)); | |
| set(obj.ui_edit_offset, 'String', sprintf('%.2f', obj.offset)); | |
| end | |
| set(obj.ui_edit_pulses, 'Enable', varstate); | |
| set(obj.ui_edit_offset, 'Enable', varstate); | |
| end | |
| function obj = fcnCallback_checkExtern(obj, ~, ~) | |
| %FCNCALLBACK_CHECKEXTERN toggle enable state of load button | |
| % set Enable state | |
| if get(obj.ui_checkbox_extern, 'Value') == 1 | |
| varstate = 'off'; | |
| varinvstate = 'on'; | |
| obj.load(); | |
| else | |
| varstate = 'on'; | |
| varinvstate = 'off'; | |
| set(obj.ui_text_extern, 'String', 'load sound file'); | |
| obj.ui_grid.align(obj.ui_text_extern,... | |
| 'VIndex', 6,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| obj.compose(); | |
| end | |
| % toggle Enable property | |
| set(obj.ui_pushbutton_load, 'Enable', varinvstate); | |
| set(obj.ui_text_extern, 'Enable', varinvstate); | |
| set(obj.ui_edit_duration, 'Enable', varstate); | |
| set(obj.ui_edit_freqBase, 'Enable', varstate); | |
| set(obj.ui_edit_freqThresh, 'Enable', varstate); | |
| set(obj.ui_popup_chirp, 'Enable', varstate); | |
| % check if threshold frequency required | |
| if strcmp(varstate, 'on') && get(obj.ui_popup_chirp, 'Value') == 1 | |
| set(obj.ui_edit_freqThresh, 'Enable', 'off'); | |
| end | |
| end | |
| function obj = fcnCallback_load(obj, ~, ~) | |
| %FCNCALLBACK_LOAD on press load button | |
| obj.load(); | |
| end | |
| function obj = fcnCallback_spectrum(obj, ~, ~) | |
| %FCNCALLBACK_SPECTRUM on press spectrum button | |
| obj.spectrum(); | |
| end | |
| function obj = fcnCallback_play(obj, ~, ~) | |
| %FCNCALLBACK_PLAY on press play button | |
| obj.play(); | |
| end | |
| end | |
| %% --- applied methods --- %% | |
| methods | |
| function obj = load(obj) | |
| %LOAD add external file | |
| [filename, pathname] = uigetfile({'*.wav'; '*.mp3'; '*.mp4'}, 'Pick an audio file'); | |
| if ~(isequal(filename, 0) || isequal(pathname, 0)) | |
| [~,filetag] = fileparts(filename); | |
| obj.extern = filetag; | |
| if length(filetag) > 16 | |
| filetag = filetag(1:16); | |
| end | |
| set(obj.ui_text_extern, 'String', filetag); | |
| obj.ui_grid.align(obj.ui_text_extern,... | |
| 'VIndex', 6,... | |
| 'HIndex', 3:4,... | |
| 'Anchor', 'center'); | |
| [obj.ydata, samplingFreq] = audioread([pathname, filesep, filename]); | |
| obj.ydata = obj.ydata(:, 1)'; | |
| obj.tdata = 0 : (1/samplingFreq) : length(obj.ydata)*(1/samplingFreq); | |
| obj.tdata = obj.tdata(1:length(obj.ydata)); | |
| obj.compile(); | |
| end | |
| end | |
| function obj = spectrum(obj) | |
| %SPECTRUM plots current tune spectrogram | |
| % create current figure label | |
| if get(obj.ui_checkbox_extern, 'Value') == 0 | |
| label = sprintf('Spectrogram: t=%.2f sec, freq=(%d, %d)[Hz], type=%s',... | |
| obj.duration,... | |
| obj.freqBase,... | |
| obj.freqThresh,... | |
| obj.CHIRP_TYPE{get(obj.ui_popup_chirp, 'Value')}); | |
| else | |
| label = sprintf('Spectrogram: %s', obj.extern); | |
| end | |
| % add figure to handle array | |
| obj.ui_spectrogram = cat(1, obj.ui_spectrogram,... | |
| figure(... | |
| 'NumberTitle', 'off',... | |
| 'Name', label)); | |
| spectrogram(obj.tune,... | |
| hamming(128),... | |
| 120,... | |
| [],... | |
| obj.SAMPLING_FREQ,... | |
| 'yaxis'); | |
| end | |
| function obj = play(obj) | |
| %PLAY plays current tune | |
| play(obj.audio); | |
| end | |
| function obj = compose(obj) | |
| %COMPOSE creates audio tune for stimuli | |
| % time span | |
| obj.tdata = 0 : 1/obj.SAMPLING_FREQ : obj.duration; | |
| % generate audio signal | |
| switch get(obj.ui_popup_chirp, 'Value') | |
| case 1 % 'pure' | |
| obj.ydata = chirp(obj.tdata, obj.freqBase, obj.duration, obj.freqBase, 'linear'); | |
| case 2 % 'linear' | |
| obj.ydata = chirp(obj.tdata, obj.freqBase, obj.duration, obj.freqThresh, 'linear'); | |
| case 3 % 'exp' | |
| obj.ydata = chirp(obj.tdata, obj.freqBase, obj.duration, obj.freqThresh, 'logarithmic'); | |
| end | |
| % compile tune | |
| obj.compile(); | |
| end | |
| function obj = compile(obj) | |
| %COMPILE compile tune in train and filter for fade in/out | |
| % time offset | |
| tOffset = 0: 1/obj.SAMPLING_FREQ : obj.offset; | |
| yOffset = zeros(1, length(tOffset)); | |
| % fade in filter | |
| idxFade = obj.tdata < obj.FADE_TIME; | |
| fadeInFilter = cat(2,... | |
| linspace(0,1,sum(idxFade)),... | |
| ones(1,sum(~idxFade))); | |
| % fade out filter | |
| idxFade = obj.tdata > (obj.duration - obj.FADE_TIME); | |
| fadeOutFilter = cat(2,... | |
| ones(1,sum(~idxFade)),... | |
| linspace(1,0,sum(idxFade))); | |
| % fade fileter | |
| fadeFilter = fadeInFilter .* fadeOutFilter; | |
| obj.ydata = obj.ydata .* fadeFilter; | |
| % generate audio train | |
| if obj.pulses > 1 | |
| lastPoint = length(obj.ydata) * obj.pulses + length(yOffset) * (obj.pulses - 1); | |
| obj.tune = repmat([obj.ydata,yOffset], 1, obj.pulses); | |
| obj.tune = obj.tune(1:lastPoint); | |
| else | |
| obj.tune = obj.ydata; | |
| end | |
| % update audio object | |
| obj.audio = audioplayer(obj.tune, obj.SAMPLING_FREQ); | |
| end | |
| end | |
| end | |
| %% --- Assistance --- %% | |
| function varnum = setRange(varnum, freqMin, freqMax) | |
| % round number | |
| varnum = round(varnum); | |
| % fix lower range | |
| if varnum < freqMin | |
| varnum = freqMin; | |
| end | |
| % fix upper range | |
| if varnum > freqMax | |
| varnum = freqMax; | |
| end | |
| end |