audio - how to combine different frequence into one .wav -



audio - how to combine different frequence into one .wav -

i want creat .wav 12khz 13khz matlab.i know how create single frequence,but idont know how combine them 1 file. there simple command?

class="lang-matlab prettyprint-override">fs =44100; tonefreq1 = 12000; nseconds = 25; f1 = sin(linspace(0, nseconds*tonefreq1*2*pi, round(nseconds*fs))); tonefreq2 = 12100; nseconds = 25; f2 = sin(linspace(0, nseconds*tonefreq2*2*pi, round(nseconds*fs))); tonefreq3 = 12200; nseconds = 25; f3 = sin(linspace(0, nseconds*tonefreq3*2*pi, round(nseconds*fs))); tonefreq4 = 12300; nseconds = 25; f4 = sin(linspace(0, nseconds*tonefreq4*2*pi, round(nseconds*fs))); tonefreq5 = 12400; nseconds = 25; f5 = sin(linspace(0, nseconds*tonefreq5*2*pi, round(nseconds*fs))); tonefreq6 = 12500; nseconds = 25; f6 = sin(linspace(0, nseconds*tonefreq6*2*pi, round(nseconds*fs))); tonefreq7 = 12600; nseconds = 25; f7 = sin(linspace(0, nseconds*tonefreq7*2*pi, round(nseconds*fs))); tonefreq8 = 12700; nseconds = 25; f8 = sin(linspace(0, nseconds*tonefreq8*2*pi, round(nseconds*fs))); tonefreq9 = 12800; nseconds = 25; f9 = sin(linspace(0, nseconds*tonefreq9*2*pi, round(nseconds*fs))); tonefreq10 = 12900; nseconds = 25; f10 = sin(linspace(0, nseconds*tonefreq10*2*pi, round(nseconds*fs))); f_12345678910= [f1+f2+f3+f4+f5+f6+f7+f8+f9+f10]; f_z=[f_12345678910]; sound(f_z,fs) wavwrite(f_z, fs, 24, '12_13zkhz.wav');

your info wavwrite needs in range of -1.0 1.0. can prepare dividing 10.

f_12345678910= [f1+f2+f3+f4+f5+f6+f7+f8+f9+f10]/10;

your sine wave generation more readable if generate time axis once.

t = [1:1:(fs*nseconds)]; f1 = sin(2*pi*t*tonefreq1/fs);

audio matlab-figure

Comments

Post a Comment

Popular posts from this blog

Delphi change the assembly code of a running process -

Delphi change the assembly code of a running process - i'm trying alter address 00741fa5 has push test.009e721c . alter push test.009e71c8 . procedure callback; asm force $9e71c8 end; procedure tform2.btn1click(sender: tobject); var ppid :dword; pprocess : cardinal; begin getwindowthreadprocessid(findwindow(nil,pchar('test')), @ppid); pprocess := openprocess(process_all_access, false, ppid); injectasm(pprocess, $741fa5, 10, integer(@callback), 0); end; here injectasm function (with error checking) function injectasm(process: longword; injectaddress, injectsize, codeaddress, codesize : integer): pointer; var csize, rsize : integer; replaced : array of byte; jmp : array [0..4] of byte; jmpaddress : integer; nopv : byte; : integer; nbr: ulong_ptr; begin //injectsize must equal or greater 5, because need space our //(far) jmp wwxxyyzz instruction //if there's no space, inject in place of few instructions if injectsize ...
Read more

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) -

json - Hibernate and Jackson (java.lang.IllegalStateException: Cannot call sendError() after the response has been committed) - hello have problem hibernate , jackson. have 2 pojos @entity @table(name = "users") public class user implements serializable { static final long serialversionuid = 4235637833262722256l; @id @generatedvalue private int id; @column(name = "creation_date") private date creationdate; @column(name = "first_name") private string firstname; @column(name = "last_name") private string lastname; @version @column(name = "version") private int version; @column(name = "e_mail") private string email; @column(name = "enabled") private boolean enabled; @column(name = "login") private string login; @column(name = "password") private string password; @jsonmanagedreference("role") @onetomany(mappedby = "user", cascade = cascadetype.all,fetch = fetchtyp...
Read more

C++ 11 "class" keyword -

C++ 11 "class" keyword - i've started using c++ 11 little bit more , have few questions on special uses of class keyword. know it's used declare class, there's 2 instances have seen don't understand: method<class t>(); and class class_name *var; why precede typename keyword class in first example, , keyword pointer in sec example? that known elaborated type specifier , necessary when class name "shadowed" or "hidden" , need explicit. class t { }; // love of god don't t t; t t2; if compiler smart, give these warnings: main.cpp:15:5: error: must utilize 'class' tag refer type 't' in scope t t2; ^ class main.cpp:14:7: note: class 't' hidden non-type declaration of 't' here t t; ^ if class not defined, deed forwards declaration. for example: template <typename t> void method() { using type = typename t::value_type; } method...
Read more