44 lines
963 B
Matlab
44 lines
963 B
Matlab
%COMMBLUETOOTHVOICE_INIT Initializes variables for Bluetooth Voice Transmission
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% example (commbluetoothvoice.slx)
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% Copyright 1996-2012 The MathWorks, Inc.
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% modified for Matlab 2022a by mag, HES-SO Valais, course SDi
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% Set input wave sample rate to be 8kHz
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Input_Fs=8000;
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sigin = audioread('commbluetoothvoice_input.wav');
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% Coefficients for speech interpolation
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[y,interp_coeffs]=interp(ones(1,10),8);
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% Header Information
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% Header_Info=[Slave_Address;Packet_Type;Flow_Control;ARQ;Sequence];
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Slave_Address= [1 0 1]';
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Packet_Type= [1 0 1 0]';
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Flow_Control= [1];
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ARQ=[1];
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Sequence=[1];
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Access_Code=zeros(72,1); Access_Code(1:2:72)=1;
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% Initialize 1,0,1,0, sequence
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One_Zero_Payload=zeros(240,1);
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One_Zero_Payload(1:2:240)=1;
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% Set Seeds
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% modified by mag: replaced randseed() by ''
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hop_seed=1;
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awgn_channel_seed=2;
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awgn_802_seed=3;
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rate_802_seed=4;
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data_seed=5;
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% Hop frequency if fixed
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fixed_hop_freq=20;
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% Assign payload bits
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Num_Payload_Bits=80;
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