GSPx is the major (digital and analog) signal processing technology forum and product exposition covering DSPs, mixed-signal and analog ...

GSPx is the major (digital and analog) signal processing technology forum and product exposition covering DSPs, mixed-signal and analog products, EDA tools, software and applications. This year's event will cover the latest technology in video compression, cellular, software defined radio (SDR), multi-core/multiprocessors, and much more. Keynote Speakers:

Ladies & Gentlemen I encountered the problem of transmission of music by MELP codec. MELP is intended for coding human speech, so it is...

Ladies & Gentlemen I encountered the problem of transmission of music by MELP codec. MELP is intended for coding human speech, so it is not surprising that the quality of the music synthesized by MELP is very low. One of the problems is failure of the pitch detector to recognize pitch-doubling/tripling in music. I think that transmission of phase

I am trying t0 measure the amplitude from an MS-GSM 6.10 data stream. While 3GPP has specs on various GSM codecs, I am trying to wade thru ...

I am trying t0 measure the amplitude from an MS-GSM 6.10 data stream. While 3GPP has specs on various GSM codecs, I am trying to wade thru and determine what or where I can find a description of the bits. For example is MS GSM 6.10 FR? etc any help is appreciated!

Dear Experts, I am new to this group and speech coding (But not to DSP) I want to know the details of G.723. But from ITU web ...

Dear Experts, I am new to this group and speech coding (But not to DSP) I want to know the details of G.723. But from ITU web site its not available and it recomended to use G.726 and G.729. What are the basic differences among G.723, G.726, G.729 ? How can I get G.723 standards ?. Regards, Ramya.

Hi all, Can anybody help me with the fixed point conversion of following code: while (iCoef < iNextBandR) { *pfltXformSubBark...

Hi all, Can anybody help me with the fixed point conversion of following code: while (iCoef < iNextBandR) { *pfltXformSubBark = 0.0; i = 0; while (i < iWidth) { *pfltXformSubBark += *pfltOuterEarXform * *pfltOuterEarXform; i++; } iCoef += iWidth; pfltXformSubBark++; iWidth = (1<

Hello all, Thank You for help and useful tips. Is there any special way for implementing variable increment in fixed point such...

Hello all, Thank You for help and useful tips. Is there any special way for implementing variable increment in fixed point such as p++; for eg. plc[i]+=(*p0)*a; p++; or this can be left as such? because p++ is euqivalent to p=p+1.Shouldnt this cause a prob if 'p' is in a different representation

Hi all, How to avoid the problem of overflow when doing the floating point to fixed point conversion? For eg. suppose...

Hi all, How to avoid the problem of overflow when doing the floating point to fixed point conversion? For eg. suppose a=b*c..if the product is out the range of 16bit representation then there is a problem.Should a and b be scaled before they are multiplied or 'a' be scaled after multiplication. Can two numbers in differ

Hello All, I am doing a floating point C code to fixed point conversion of iLBC (Internet Low Bit rate Codec).Kindly help me with...

Hello All, I am doing a floating point C code to fixed point conversion of iLBC (Internet Low Bit rate Codec).Kindly help me with the following: 1) How to convert numbers such as -1.85,-10.45,-1.008 to fixed point? 2) How to convert numbers such as 1.85,10.45 etc to fixed point? 3) Is there any general rule to follow when doing these conversi

Hi friends, I have implemented complete AMR-NB Enc-Dec on proprietary DSP chip. As we know AMR-NB works on 8 rates from...

Hi friends, I have implemented complete AMR-NB Enc-Dec on proprietary DSP chip. As we know AMR-NB works on 8 rates from 12.2kb/s to 4.75kb/s. One thing I'll still not clear is - Why in 12.2kb/s rate LPC analysis is done twice as compared to other rates whe

Hi All, I am currently implementing the GSM EFR vocoders. There is one thing that i don't really understand. After encoding...

Hi All, I am currently implementing the GSM EFR vocoders. There is one thing that i don't really understand. After encoding a file, i have to pass the file to another module so that the output format of that module will will allow my decoder to decode the file correctly. Why that module is not implemented on the encoder itsel