thr3ads.net - Speex dev - [Speex-dev] problem: The decoded frame is not as the original one [Mar 2012]

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Mashal al-shboul

2012-Mar-10 19:20 UTC

[Speex-dev] problem: The decoded frame is not as the original one

Hi All,
i need your help in determining the problem in the following sample code (taken
from speex manual) for fixed point encoding.
i tested encoding a 160 sample frame and then decoding it back But The problem
is that the decoded frame is totally different from the original frame(see
output below).What is the possible reason for this?.thanks for any help


#include<stdio.h>
#include"intel16.h"
#include <speex/speex.h>

#define FRAME_SIZE 160
#define MAX_NB_BYTES 25
SpeexBits bits;
void *enc_state;
int quality=4;?????? 
int nbBytes;
int byte_ptr;
int frame_size;
short frame[FRAME_SIZE];? 
char outBuffer[20];

SpeexBits decBits;
void *dec_state;
short decFrame[FRAME_SIZE];
/*===========END ===============================*/


int z=0;
int frame_size;


int main (int argc,char **argv)
{
for( z=0;z<160;z++)
??? {
??? frame[z]=intel_theme[z];? //array of short from "intel16" header
file
??? }
?printf("\n =================================== \n");

?for( z=0;z<160;z++)
??? {
??????? printf("%i",frame[z]);
??? printf ("? ");
??????? }

/*===============================ENCODING==============================================*/

???? speex_bits_init(&bits);
???? enc_state = speex_encoder_init(&speex_nb_mode);
???? speex_encoder_ctl(enc_state,SPEEX_GET_FRAME_SIZE,&frame_size);
???? speex_encoder_ctl(enc_state,SPEEX_SET_QUALITY,&quality);
???? speex_bits_reset(&bits);
?
//-----------TWO CALLS FOR ENCODING-------------------
???? speex_encode_int(enc_state, frame, &bits);??????????????? // encoding
from frame to &bits
???? nbBytes = speex_bits_write(&bits, outBuffer, MAX_NB_BYTES); //writing
from &bits to outBuffer
//----------------------------------------------------
???? 
???? speex_bits_destroy(&bits);
???? speex_encoder_destroy(enc_state);??? 

printf("\n outBuffer: ");
for(z=0;z<20;z++)
{
printf("%c",outBuffer[z]);
}
printf("\n \n");
/*===============================END OF
ENCODING=========================================*/


/*===============================DECODING==============================================*/

speex_bits_init(&decBits);
dec_state=speex_decoder_init(&speex_nb_mode);
speex_decoder_ctl(dec_state, SPEEX_GET_FRAME_SIZE, &frame_size);

//-----------TWO CALLS FOR DECODING-------------------
speex_bits_read_from(&decBits,outBuffer,nbBytes);
speex_decode_int(dec_state,&decBits,decFrame);
//----------------------------------------------------
printf("\n BUFFER DECODED BACK \n");


for(z=0;z<160;z++)
{
printf("%i",decFrame[z]);
printf ("? ");
}

speex_bits_destroy(&decBits);
speex_decoder_destroy(dec_state);
/*===============================END OF
DECODING==============================================*/
printf("\n nbBytes: ");
printf("%i",nbBytes);
printf("\n frame_size= ");
printf("%i",frame_size);
printf ("\n");
//-----------------
printf("end of run!");

return 0;
}

OUTPUT:
//the original frame

1? -512? 16384? 512? -768? -2048? -1280? 256? -1024? 12288? 0? 8192? 253? 256?
-768? 12288? 0? -16? -768? -512? -1? 0? -512? -768? -1536? -512? -512? -768?
16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280? 256? -1024? 12288? 0?
8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0? -512? -768? -1536? -512?
-512? -768? 16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280? 256? -1024?
12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0? -512? -768?
-1536? -512? -512? -768? 16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280?
256? -1024? 12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0?
-512? -768? -1536? -512? -512? -768? 16384? 0? 8192? -512? 16384? 512? -768?
-2048? -1280? 256? -1024? 12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768?
-512? -1? 0? -512? -768? -1536? -512?
 -512? -768? 16384? 0? -1? 0? -512? -768? -1536? -512? -512? -768? 16384? -1? 
?=================================== 

?outBuffer: ?9?p?C??m?Cx6??
?
//the decoded frame .totally different
?BUFFER DECODED BACK 
0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0?
0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0?
0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0?
2838? -3982? 4801? -4136? 432? -1945? 610? 1035? -1090? 2752? -558? 1431? -2320?
-1016? 789? 5084? -2395? -2916? -225? -311? -703? 586? 1110? -557? -1152? 1096?
229? 425? 5825? -933? 3922? -6289? 7423? -6636? -793? -2123? -354? 991? -1947?
3958? -1070? 1380? -2120? -2777? -679? 9010? -2451? -4210? -1845? 229? -1687?
317? 1443? -1355? -2818? 214? 721? -313? 9997? -60? 3489? -5953? 9277? -6990?
-2716? -1642? -792? 477? -2417? 5801? -1200? 1055? -1744? -2927? -2053? 10273?
-1913? -4342? -2718? 427?
?nbBytes: 20
?frame_size= 160
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Mashal al-shboul

2012-Mar-11 17:17 UTC

head link

[Speex-dev] problem: The decoded frame is not as the original one

Hi All,
i need your help in determining the problem in the following sample code (taken
from speex manual) for fixed point encoding.
i tested encoding a 160 sample frame and then decoding it back But The problem
is that the decoded frame is totally different from the original frame(see
output below).What is the possible reason for this?.thanks for any help


#include<stdio.h>
#include"intel16.h"
#include <speex/speex.h>

#define FRAME_SIZE 160
#define MAX_NB_BYTES 25
SpeexBits bits;
void *enc_state;
int quality=4;?????? 
int nbBytes;
int byte_ptr;
int frame_size;
short frame[FRAME_SIZE];? 
char outBuffer[20];

SpeexBits decBits;
void *dec_state;
short
 decFrame[FRAME_SIZE];
/*===========END ===============================*/


int z=0;
int frame_size;


int main (int argc,char **argv)
{
for( z=0;z<160;z++)
??? {
??? frame[z]=intel_theme[z];? //array of short from "intel16" header
file
??? }
?printf("\n =================================== \n");

?for( z=0;z<160;z++)
??? {
??????? printf("%i",frame[z]);
??? printf ("? ");
??????? }

/*===============================ENCODING==============================================*/

???? speex_bits_init(&bits);
???? enc_state = speex_encoder_init(&speex_nb_mode);
????
 speex_encoder_ctl(enc_state,SPEEX_GET_FRAME_SIZE,&frame_size);
???? speex_encoder_ctl(enc_state,SPEEX_SET_QUALITY,&quality);
???? speex_bits_reset(&bits);
?
//-----------TWO CALLS FOR ENCODING-------------------
???? speex_encode_int(enc_state, frame, &bits);??????????????? // encoding
from frame to &bits
???? nbBytes = speex_bits_write(&bits, outBuffer, MAX_NB_BYTES); //writing
from &bits to outBuffer
//----------------------------------------------------
???? 
???? speex_bits_destroy(&bits);
???? speex_encoder_destroy(enc_state);??? 

printf("\n outBuffer: ");
for(z=0;z<20;z++)
{
printf("%c",outBuffer[z]);
}
printf("\n
 \n");
/*===============================END OF
ENCODING=========================================*/


/*===============================DECODING==============================================*/

speex_bits_init(&decBits);
dec_state=speex_decoder_init(&speex_nb_mode);
speex_decoder_ctl(dec_state, SPEEX_GET_FRAME_SIZE, &frame_size);

//-----------TWO CALLS FOR DECODING-------------------
speex_bits_read_from(&decBits,outBuffer,nbBytes);
speex_decode_int(dec_state,&decBits,decFrame);
//----------------------------------------------------
printf("\n BUFFER DECODED BACK \n");


for(z=0;z<160;z++)
{
printf("%i",decFrame[z]);
printf ("? ");
}

speex_bits_destroy(&decBits);
speex_decoder_destroy(dec_state);
/*===============================END OF
DECODING==============================================*/
printf("\n nbBytes: ");
printf("%i",nbBytes);
printf("\n frame_size= ");
printf("%i",frame_size);
printf ("\n");
//-----------------
printf("end of run!");

return 0;
}

OUTPUT:
//the original frame

1? -512? 16384? 512? -768? -2048? -1280? 256? -1024? 12288? 0? 8192? 253? 256?
-768? 12288? 0? -16? -768? -512? -1? 0? -512? -768? -1536? -512? -512? -768?
16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280? 256? -1024? 12288? 0?
8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0? -512? -768? -1536? -512?
-512? -768? 16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280? 256? -1024?
12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0? -512? -768?
-1536? -512? -512? -768? 16384? 0? 8192? -512? 16384? 512? -768? -2048? -1280?
256? -1024? 12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768? -512? -1? 0?
-512? -768? -1536? -512? -512? -768? 16384? 0? 8192? -512? 16384? 512? -768?
-2048? -1280? 256? -1024? 12288? 0? 8192? 253? 256? -768? 12288? 0? -16? -768?
-512? -1? 0? -512? -768? -1536? -512?
 -512? -768? 16384? 0? -1? 0? -512? -768? -1536? -512? -512? -768? 16384? -1? 
?=================================== 

?outBuffer: ?9?p?C??m?Cx6??
?
//the decoded frame .totally different
?BUFFER DECODED BACK 
0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0?
0? 0? 0? 0?
 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0?
0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 0? 2838?
-3982? 4801? -4136? 432? -1945? 610? 1035? -1090? 2752? -558? 1431? -2320?
-1016? 789? 5084? -2395? -2916? -225? -311? -703? 586? 1110? -557? -1152? 1096?
229? 425? 5825? -933? 3922? -6289? 7423? -6636? -793? -2123? -354? 991? -1947?
3958? -1070? 1380? -2120? -2777? -679? 9010? -2451? -4210? -1845? 229? -1687?
 317? 1443? -1355? -2818? 214? 721? -313? 9997? -60? 3489? -5953? 9277? -6990?
-2716? -1642? -792? 477? -2417? 5801? -1200? 1055? -1744? -2927? -2053? 10273?
-1913? -4342? -2718? 427?
?nbBytes: 20
?frame_size= 160
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邓尧

2012-Mar-12 01:50 UTC

head link

[Speex-dev] problem: The decoded frame is not as the original one

It's lossy encoding.

On Mon, Mar 12, 2012 at 1:17 AM, Mashal al-shboul <shboul8989 at
yahoo.com>wrote:
> Hi All,
> i need your help in determining the problem in the following sample code
> (taken from speex manual) for fixed point encoding.
> i tested encoding a 160 sample frame and then decoding it back But The
> problem is that the decoded frame is totally different from the original
> frame(see output below).What is the possible reason for this?.thanks for
> any help
>
> #include<stdio.h>
> #include"intel16.h"
> #include <speex/speex.h>
>
> #define FRAME_SIZE 160
> #define MAX_NB_BYTES 25
> SpeexBits bits;
> void *enc_state;
> int quality=4;
> int nbBytes;
> int byte_ptr;
> int frame_size;
> short frame[FRAME_SIZE];
> char outBuffer[20];
>
> SpeexBits decBits;
> void *dec_state;
> short decFrame[FRAME_SIZE];
> /*===========END ===============================*/
>
>
> int z=0;
> int frame_size;
>
>
> int main (int argc,char **argv)
> {
> for( z=0;z<160;z++)
>     {
>     frame[z]=intel_theme[z];  //array of short from "intel16"
header file
>     }
>  printf("\n =================================== \n");
>
>  for( z=0;z<160;z++)
>     {
>         printf("%i",frame[z]);
>     printf ("  ");
>         }
>
>
>
/*===============================ENCODING==============================================*/
>
>      speex_bits_init(&bits);
>      enc_state = speex_encoder_init(&speex_nb_mode);
>      speex_encoder_ctl(enc_state,SPEEX_GET_FRAME_SIZE,&frame_size);
>      speex_encoder_ctl(enc_state,SPEEX_SET_QUALITY,&quality);
>      speex_bits_reset(&bits);
>
> //-----------TWO CALLS FOR ENCODING-------------------
>      speex_encode_int(enc_state, frame, &bits);                //
encoding
> from frame to &bits
>      nbBytes = speex_bits_write(&bits, outBuffer, MAX_NB_BYTES);
//writing
> from &bits to outBuffer
> //----------------------------------------------------
>
>      speex_bits_destroy(&bits);
>      speex_encoder_destroy(enc_state);
>
> printf("\n outBuffer: ");
> for(z=0;z<20;z++)
> {
> printf("%c",outBuffer[z]);
> }
> printf("\n \n");
> /*===============================END OF
> ENCODING=========================================*/
>
>
>
>
/*===============================DECODING==============================================*/
>
> speex_bits_init(&decBits);
> dec_state=speex_decoder_init(&speex_nb_mode);
> speex_decoder_ctl(dec_state, SPEEX_GET_FRAME_SIZE, &frame_size);
>
> //-----------TWO CALLS FOR DECODING-------------------
> speex_bits_read_from(&decBits,outBuffer,nbBytes);
> speex_decode_int(dec_state,&decBits,decFrame);
> //----------------------------------------------------
> printf("\n BUFFER DECODED BACK \n");
>
> for(z=0;z<160;z++)
> {
> printf("%i",decFrame[z]);
> printf ("  ");
> }
>
> speex_bits_destroy(&decBits);
> speex_decoder_destroy(dec_state);
> /*===============================END OF
> DECODING==============================================*/
> printf("\n nbBytes: ");
> printf("%i",nbBytes);
> printf("\n frame_size= ");
> printf("%i",frame_size);
> printf ("\n");
> //-----------------
> printf("end of run!");
>
> return 0;
> }
>
> OUTPUT:
> //the original frame
> 1  -512  16384  512  -768  -2048  -1280  256  -1024  12288  0  8192  253
> 256  -768  12288  0  -16  -768  -512  -1  0  -512  -768  -1536  -512  -512
> -768  16384  0  8192  -512  16384  512  -768  -2048  -1280  256  -1024
> 12288  0  8192  253  256  -768  12288  0  -16  -768  -512  -1  0  -512
> -768  -1536  -512  -512  -768  16384  0  8192  -512  16384  512  -768
> -2048  -1280  256  -1024  12288  0  8192  253  256  -768  12288  0  -16
> -768  -512  -1  0  -512  -768  -1536  -512  -512  -768  16384  0  8192
> -512  16384  512  -768  -2048  -1280  256  -1024  12288  0  8192  253  256
> -768  12288  0  -16  -768  -512  -1  0  -512  -768  -1536  -512  -512
> -768  16384  0  8192  -512  16384  512  -768  -2048  -1280  256  -1024
> 12288  0  8192  253  256  -768  12288  0  -16  -768  -512  -1  0  -512
> -768  -1536  -512  -512  -768  16384  0  -1  0  -512  -768  -1536  -512
> -512  -768  16384  -1
>  ==================================>
>  outBuffer: ?9?p?C??m?Cx6??
>
> //the decoded frame .totally different
>  BUFFER DECODED BACK
> 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0
> 0  0  0  0  0  2838  -3982  4801  -4136  432  -1945  610  1035  -1090
> 2752  -558  1431  -2320  -1016  789  5084  -2395  -2916  -225  -311  -703
> 586  1110  -557  -1152  1096  229  425  5825  -933  3922  -6289  7423
> -6636  -793  -2123  -354  991  -1947  3958  -1070  1380  -2120  -2777
> -679  9010  -2451  -4210  -1845  229  -1687  317  1443  -1355  -2818  214
> 721  -313  9997  -60  3489  -5953  9277  -6990  -2716  -1642  -792  477
> -2417  5801  -1200  1055  -1744  -2927  -2053  10273  -1913  -4342  -2718
> 427
>  nbBytes: 20
>  frame_size= 160
>
>
>
>
>
>
>
>
> _______________________________________________
> Speex-dev mailing list
> Speex-dev at xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
>
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Arthurc

2012-Mar-12 02:59 UTC

head link

[Speex-dev] problem: The decoded frame is not as the original one

1. Sound encoding and decoding is a lossy process.
2. To determine that it is working correctly, you either play it back or look at
he wave form.

Arthur

On 2012?3?12?, at ??1:17, Mashal al-shboul <shboul8989 at yahoo.com>
wrote:
> Hi All,
> i need your help in determining the problem in the following sample code
(taken from speex manual) for fixed point encoding.
> i tested encoding a 160 sample frame and then decoding it back But The
problem is that the decoded frame is totally different from the original
frame(see output below).What is the possible reason for this?.thanks for any
help
> 
> #include<stdio.h>
> #include"intel16.h"
> #include <speex/speex.h>
> 
> #define FRAME_SIZE 160
> #define MAX_NB_BYTES 25
> SpeexBits bits;
> void *enc_state;
> int quality=4;       
> int nbBytes;
> int byte_ptr;
> int frame_size;
> short frame[FRAME_SIZE];  
> char outBuffer[20];
> 
> SpeexBits decBits;
> void *dec_state;
> short decFrame[FRAME_SIZE];
> /*===========END ===============================*/
> 
> 
> int z=0;
> int frame_size;
> 
> 
> int main (int argc,char **argv)
> {
> for( z=0;z<160;z++)
>     {
>     frame[z]=intel_theme[z];  //array of short from "intel16"
header file
>     }
>  printf("\n =================================== \n");
> 
>  for( z=0;z<160;z++)
>     {
>         printf("%i",frame[z]);
>     printf ("  ");
>         }
> 
>
/*===============================ENCODING==============================================*/
> 
>      speex_bits_init(&bits);
>      enc_state = speex_encoder_init(&speex_nb_mode);
>      speex_encoder_ctl(enc_state,SPEEX_GET_FRAME_SIZE,&frame_size);
>      speex_encoder_ctl(enc_state,SPEEX_SET_QUALITY,&quality);
>      speex_bits_reset(&bits);
>  
> //-----------TWO CALLS FOR ENCODING-------------------
>      speex_encode_int(enc_state, frame, &bits);                //
encoding from frame to &bits
>      nbBytes = speex_bits_write(&bits, outBuffer, MAX_NB_BYTES);
//writing from &bits to outBuffer
> //----------------------------------------------------
>      
>      speex_bits_destroy(&bits);
>      speex_encoder_destroy(enc_state);    
> 
> printf("\n outBuffer: ");
> for(z=0;z<20;z++)
> {
> printf("%c",outBuffer[z]);
> }
> printf("\n \n");
> /*===============================END OF
ENCODING=========================================*/
> 
> 
>
/*===============================DECODING==============================================*/
> 
> speex_bits_init(&decBits);
> dec_state=speex_decoder_init(&speex_nb_mode);
> speex_decoder_ctl(dec_state, SPEEX_GET_FRAME_SIZE, &frame_size);
> 
> //-----------TWO CALLS FOR DECODING-------------------
> speex_bits_read_from(&decBits,outBuffer,nbBytes);
> speex_decode_int(dec_state,&decBits,decFrame);
> //----------------------------------------------------
> printf("\n BUFFER DECODED BACK \n");
> 
> for(z=0;z<160;z++)
> {
> printf("%i",decFrame[z]);
> printf ("  ");
> }
> 
> speex_bits_destroy(&decBits);
> speex_decoder_destroy(dec_state);
> /*===============================END OF
DECODING==============================================*/
> printf("\n nbBytes: ");
> printf("%i",nbBytes);
> printf("\n frame_size= ");
> printf("%i",frame_size);
> printf ("\n");
> //-----------------
> printf("end of run!");
> 
> return 0;
> }
> 
> OUTPUT:
> //the original frame
> 1  -512  16384  512  -768  -2048  -1280  256  -1024  12288  0  8192  253 
256  -768  12288  0  -16  -768  -512  -1  0  -512  -768  -1536  -512  -512  -768
16384  0  8192  -512  16384  512  -768  -2048  -1280  256  -1024  12288  0  8192
253  256  -768  12288  0  -16  -768  -512  -1  0  -512  -768  -1536  -512  -512 
-768  16384  0  8192  -512  16384  512  -768  -2048  -1280  256  -1024  12288  0
8192  253  256  -768  12288  0  -16  -768  -512  -1  0  -512  -768  -1536  -512 
-512  -768  16384  0  8192  -512  16384  512  -768  -2048  -1280  256  -1024 
12288  0  8192  253  256  -768  12288  0  -16  -768  -512  -1  0  -512  -768 
-1536  -512  -512  -768  16384  0  8192  -512  16384  512  -768  -2048  -1280 
256  -1024  12288  0  8192  253  256  -768  12288  0  -16  -768  -512  -1  0 
-512  -768  -1536  -512  -512  -768  16384  0  -1  0  -512  -768  -1536  -512 
-512  -768  16384  -1
>  =================================== 
> 
>  outBuffer: ?9?p?C??m?Cx6??
>  
> //the decoded frame .totally different
>  BUFFER DECODED BACK 
> 0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0  0 
0  2838  -3982  4801  -4136  432  -1945  610  1035  -1090  2752  -558  1431 
-2320  -1016  789  5084  -2395  -2916  -225  -311  -703  586  1110  -557  -1152 
1096  229  425  5825  -933  3922  -6289  7423  -6636  -793  -2123  -354  991 
-1947  3958  -1070  1380  -2120  -2777  -679  9010  -2451  -4210  -1845  229 
-1687  317  1443  -1355  -2818  214  721  -313  9997  -60  3489  -5953  9277 
-6990  -2716  -1642  -792  477  -2417  5801  -1200  1055  -1744  -2927  -2053 
10273  -1913  -4342  -2718  427
>  nbBytes: 20
>  frame_size= 160
> 
> 
> 
> 
> 
> 
> 
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