Matlab Coder: Fail to call phased.FrostBeamformer().

Question

亚杰颜 2022-12-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1876187-matlab-coder-fail-to-call-phased-frostbeamformer

编辑： Areej Varamban Kallan 2023-1-19

在 MATLAB Online 中打开

I use phased.FrostBeamformer() in my matlab code, and I want to transfer this code into c++ code through matlab coder.

The matlab coder construct phased.FrostBeamformer successfully, but fail to call this callable object.

Here are the error message and my codes:

function EnhancedAudio = AudioEnhance(OriginalAudio, BFAngle)
    % OriginalAudio: samples * channels
    InputSize = size(OriginalAudio);
	DataLength = InputSize(1);
	NumOfChannels = 5; 
    Angle = [BFAngle ; 0];
     
    microphone = phased.OmnidirectionalMicrophoneElement('FrequencyRange',[20 20e3]);
    ula = phased.ULA(NumOfChannels, 0.024, 'Element', microphone);
    c = 340;
    Beamformer = phased.FrostBeamformer(...
		'SensorArray',ula,...
		'SampleRate',16000,...
        'PropagationSpeed',c,...
		'FilterLength',30,...
		'DirectionSource','Input port'...
	); 
   
	FrameLength = 2000;
    EnhancedAudio = zeros(DataLength, 1);
    for i = 1:FrameLength:DataLength
		InvolvedAudio = OriginalAudio(i: i + FrameLength - 1, :);
        EnhancedAudio(i: i + FrameLength - 1, :) = Beamformer(InvolvedAudio, Angle);
    end
end

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Ji Lee 2022-12-12

Would you be able to provide the project (PRJ) file associated with this code and error?

亚杰颜 2022-12-18

AudioEnhance.zip

Sorry for replying so lately, I tried to solve it by myself but failed.

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Answer 1

Areej Varamban Kallan 2023-1-19

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1876187-matlab-coder-fail-to-call-phased-frostbeamformer#answer_1151770

编辑：Areej Varamban Kallan 2023-1-19

在 MATLAB Online 中打开

Hi,

This is an internal error from phased.FrostBeamformer. We have made an internal note for more investigation.

Meanwhile with some changes to your function AudioEnahance.m, we can successfully generate code. Please find the modified code below.

function EnhancedAudio = AudioEnhance(OriginalAudio, BFAngle)
%#codegen
% OriginalAudio: samples * channels
InputSize = size(OriginalAudio);
DataLength = InputSize(1);
NumOfChannels = 5; 
Angle = [BFAngle ; 0];
 
microphone = phased.OmnidirectionalMicrophoneElement('FrequencyRange',[20 20e3]);
ula = phased.ULA(NumOfChannels, 0.024, 'Element', microphone);
c = 340;
Beamformer = phased.FrostBeamformer(...
	'SensorArray',ula,...
	'SampleRate',16000,...
    'PropagationSpeed',c,...
	'FilterLength',30,...
	'DirectionSource','Input port'...
); 
FrameLength = 2000;
EnhancedAudio = zeros(DataLength, 1);
InvolvedAudio = coder.nullcopy(zeros(FrameLength,size(OriginalAudio,2),'like',OriginalAudio));
for i = 1:FrameLength:DataLength
    if coder.target('MATLAB')
		InvolvedAudio = OriginalAudio(i: i + FrameLength - 1, :);
    else
        for ch = 1:FrameLength
            InvolvedAudio(ch,:) = OriginalAudio(i+ch-1,:);
        end
    end
    EnhancedAudio(i: i + FrameLength - 1, :) = Beamformer(InvolvedAudio, Angle);
end
end