Read wav file in hexa

I want to read wav file in hexa, how i'm supposed to do that?

rawsignal=wavread('tes.wav','native');

above code returns me sample data in int16, can i convert it to hexa ? or even it's possible?

Answer 1

[per isakson]

Try something:

    >> dec2hex(int8([126:127]),2)
    ans =
    7E
    7F

and

    >> dec2hex(int16([32765:32767]),4)
    ans =
    7FFD
    7FFE
    7FFF

[I Made]

Yeah i read about it, but how about the minus integer like -114 for example ? from the documentation that function apply only on non minus integer. Do you know another function?

[Walter Roberson]

dec2hex( typecast( rawsignal(:,1), 'uint16') )

[per isakson]

FEX: http://www.mathworks.se/matlabcentral/fileexchange/21336-int2hex

Wiki: http://en.wikipedia.org/wiki/Hexadecimal

Signs

The hexadecimal system can express negative numbers the same way as in decimal: −2A to represent −4210 and so on.

Google: "negative hexadecimal number"

[I Made]

Thanks Walter, but it's seems strange why after i change it to hexa the sample become more than before it was changed to hexa? it like :

rawsignal < 250608 x 2 double > -> < 1002432 x 4 char >, shouldn't it become more few after i change it to hexa?

[Walter Roberson]

You said that the above code returned you rawsignal as int16, but now you are saying that rawsignal is double ??

[I Made]

Oh i'm really sorry i remove the 'native' code in

     y=wavread('tes.wav','native');

My bad, sorry it's the same < 250608 x int16 > to < 250608 x 4char >

But it cannot display it, it's say : Cannot display summaries of variables with more than 524288 elements.

[Walter Roberson]

I'm not sure what kind of summary you expect for characters anyhow?

The summary in the workspace browser is just a convenience and has no effect on the program.

[I Made]

Nothing important, i just wanna see it and solve the problem if anyhow i meet this kinda problem again. Anyway i've found how to do it, well we only need to write it down on excel. And very thank to both of you, you guys are great :D