StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POSpeex decoded frame is not as the original frame
primarykey
Id
9653070
data
AcceptedAnswerId
0
AnswerCount
1
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2012-03-11T06:58:57.093
FavoriteCount
0
LastActivityDate
2012-04-06T20:21:51.580
LastEditDate
LastEditorUserId
0
OwnerUserId
1216882
ParentId
0
PostTypeId
1
Score
0
ViewCount
893
LastEditorDisplayName
text
Body
<p>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 in a comment).What is the possible reason for this?.thanks for any help</p> <pre><code>#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]; 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 (" "); } 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); 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"); //-----------DECODING------------------- speex_bits_init(&decBits); dec_state=speex_decoder_init(&speex_nb_mode); speex_decoder_ctl(dec_state, SPEEX_GET_FRAME_SIZE, &frame_size); 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; } </code></pre>
Tags
<c><compression><frame><encode><speex>
Title
Speex decoded frame is not as the original frame
singulars
PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USMashal al-shboul
plurals
PostLinksPostIdRelatedPostId
1. PL
  singulars
  LinkTypeLinkTypeId
  LTLinked
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
  singulars
  PostTypePostTypeId
  PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.