pdaufft(audio_in,Fs​,FFT_sample_duratio​n,pda_threshold,aud​io_gap_time,CHECK_V​OICING,med_smooth)

Dear all, I am facing a problem in this function. Could you please correct me ?

function [f0_time,f0_value,SHR,f0_candidates]= pdaufft(audio_in,Fs,FFT_sample_duration,pda_threshold,audio_gap_time,CHECK_VOICING,med_smooth)
%*****************************************************************************************************************************************
%________________________________ INPUT ARGUMENTS_________________________________________________________________________________________
%*****************************************************************************************************************************************
% audio_in is the input audio file with extension .wav or .mp3 or any other format
% Fs is the sampling frequency in Hertz
% FFT_sample_duration is the smallest chunk of the sudio signal whose FFT has to be found out. Default value is chosen as 30 milliseconds.
% audio_gap_time is the gap between the consecutive chunks of the audio signal for calculating FFT. Maximum value is 10 milliseconds
%_________________________________________________________________________________________________________________________________________
%*****************************************************************************************************************************************
%_______________________________OUTPUT ARGUMENTS__________________________________________________________________________________________
%*****************************************************************************************************************************************
% FFT_segment stores the values of 1024-point FFT of the normalized audio input
% max_value stores the value of the maximum amplitude in the absolute value plot of FFT_segment.
% max_index corresponds to the index value of the maximum amplitude.
% frequency has the value of frequency computed using the index.
% note corresponds to MIDI note.
%******************************************************************************************************************************************
if nargin<7
med_smooth=0;
end
if nargin<6
%frame_len=40; % default 40 ms
CHECK_VOICING=0;
end
if nargin<5
audio_gap_time=10;% default 10 ms
end
if nargin<4
%frame_len=40; % default 40 ms
pda_threshold=0.4;
end
if nargin<3
FFT_sample_duration=30; % default 30 ms
end
if nargin<2
error(':Sampling rate must be supplied!')
end
%timestep=10;
%total_len=length(audio_in);
%segmentduration=frame_l
%segmentlen = round(segmentduration*(Fs/1000));
%inc=round(timestep*(Fs/1000));
%nf = fix((total_len-segmentlen+inc)/inc);