Документация

classdef myEchoSystemObjectPlugin < audioPlugin & matlab.System
    properties
        Gain = 1.5;
        Delay = 0.5;
    end
    properties (Access = private)
        CircularBuffer = zeros(192001,2);
        BufferIndex = 1;
        NSamples = 0;
    end
    properties (Constant)
        PluginInterface = audioPluginInterface(...
            audioPluginParameter('Gain',...
            'DisplayName','Echo Gain',...
            'Mapping',{'lin',0,3}),...
            audioPluginParameter('Delay',...
            'DisplayName','Echo',...
            'Label','seconds'))
    end
    methods (Access = protected)
        function out = stepImpl(plugin, in)
            out = zeros(size(in));
            writeIndex = plugin.BufferIndex;
            readIndex = writeIndex - plugin.NSamples;
            if readIndex <= 0
                readIndex = readIndex + 192001;
            end
            
            for i = 1:size(in,1)
                plugin.CircularBuffer(writeIndex,:) = in(i,:);
                
                echo = plugin.CircularBuffer(readIndex,:);
                out(i,:) = in(i,:) + echo * plugin.Gain;
                
                writeIndex = writeIndex + 1;
                if writeIndex > 192001
                    writeIndex = 1;
                end
                
                readIndex = readIndex + 1;
                if readIndex > 192001
                    readIndex = 1;
                end
            end
            plugin.BufferIndex = writeIndex;
        end
        function resetImpl(plugin)
            plugin.CircularBuffer = zeros(192001,2);
            plugin.NSamples = floor(getSampleRate(plugin) * plugin.Delay);
        end
    end
    methods
        function set.Delay(plugin, val)
            plugin.Delay = val;
            plugin.NSamples = floor(getSampleRate(plugin) * val);
        end
    end
end

classdef myBasicPlugin < audioPlugin
    % myBasicPlugin is a template basic plugin. Use this template to create
    % your own basic plugin.
    
    properties
        % Use this section to initialize properties that the end-user interacts
        % with.
    end
    properties (Access = private)
        % Use this section to initialize properties that the end-user does not
        % interact with directly.
    end
    properties (Constant)
        % This section contains instructions to build your audio plugin
        % interface. The end-user uses the interface to adjust tunable
        % parameters. Use audioPluginParameter to associate a public property
        % with a tunable parameter.
    end
    methods
        function out = process(plugin, in)
            % This section contains instructions to process the input audio
            % signal. Use plugin.MyProperty to access a property of your
            % plugin.
        end
        function reset(plugin)
            % This section contains instructions to reset the plugin between
            % uses or if the environment sample rate changes.
        end
        function set.MyProperty(plugin, val)
            % This section contains instructions to execute if the
            % specified property is modified. Properties associated with
            % parameters are updated automatically. Use the set method to
            % execute more complicated instructions.
        end
    end
end

classdef myBasicSourcePlugin < audioPluginSource
    % myBasicSourcePlugin is a template for a basic source plugin. Use this
    % template to create your own basic source plugin.
    
    properties
        % Use this section to initialize properties that the end-user
        % interacts with.
    end
    properties (Access = private)
        % Use this section to initialize properties that the end-user does
        % not interact with directly.
    end
    properties (Constant)
        % This section contains instructions to build your audio plugin
        % interface. The end-user uses the interface to adjust tunable
        % parameters. Use audioPluginParameter to associate a public
        % property with a tunable parameter.
    end
    methods
        function out = process(plugin)
            % This section contains instructions to produce the output
            % audio signal. Use plugin.MyProperty to access a property of
            % your plugin. Use getSamplesPerFrame(plugin) to get the frame
            % size used by the environment.
        end
        function reset(plugin)
            % This section contains instructions to reset the plugin
            % between uses, or when the environment sample rate changes.
        end
        function set.MyProperty(plugin, val)
            % This section contains instructions to execute if the
            % specified property is modified. Properties associated with
            % parameters are updated automatically. Use the set method to
            % execute more complicated instructions.
        end
    end
end

classdef mySystemObjectPlugin < audioPlugin & matlab.System
    % mySystemObjectPlugin is a template for System object plugins.
    % Use this template to create your own System object plugin.
    
    properties
        % Use this section to initialize properties that the end-user interacts
        % with.
    end
    properties (Access = private)
        % Use this section to initialize properties that the end-user does not
        % interact with directly.
    end
    properties (Constant)
        % This section contains instructions to build your audio plugin
        % interface. The end-user uses the interface to adjust tunable
        % parameters. Use audioPluginParameter to associate a public property
        % with a tunable parameter.
    end
    methods (Access = protected)
        function out = stepImpl(plugin)
            % This section contains instructions to process the input audio
            % signal. Use plugin.MyProperty to access a property of your
            % plugin.
        end
        function resetImpl(plugin)
            % This section contains instructions to reset the plugin between
            % uses or if the environment sample rate changes.
        end  
    end
    methods
        function set.MyProperty(plugin, val)
            % This section contains instructions to execute if the specified
            % property is modified. Properties associated with parameters are updated
            % automatically. Use the set method to execute more complicated
            % instructions.
        end
    end
end

classdef mySystemObjectSourcePlugin < audioPluginSource & matlab.System
    % mySystemObjectPlugin is a template for System object source plugins.
    % Use the template to create your own System object source plugin.
    
    properties
        % Use this section to initialize properties that the end-user
        % interacts with.
    end
    properties (Access = private)
        % Use this section to initialize properties that the end-user does
        % not interact with directly.
    end
    properties (Constant)
        % This section contains instructions to build your audio plugin
        % interface. The end-user uses the interface to adjust tunable
        % parameters. Use audioPluginParameter to associate a public
        % property with a tunable parameter.
    end
    methods (Access = protected)
        function out = stepImpl(plugin)
            % This section contains instructions to produce the output
            % audio signal. Use plugin.MyProperty to access a property of
            % your plugin. Use getSamplesPerFrame(plugin) to get the frame
            % size used by the environment.
        end
        function resetImpl(plugin)
            % This section contains instructions to reset the plugin
            % between uses or if the environment sample rate changes.
        end
    end
    methods
        function set.MyProperty(plugin, val)
            % This section contains instructions to execute if the
            % specified property is modified. Properties associated with
            % parameters are updated automatically. Use the set method to
            % execute more complicated instructions.
        end
    end
end