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Hello,
I am a beginner and trying to understand the working of G.723 ADPCM.

I have been able to get all the C files from ITU for the G.723 ADPCM.

I have a basic question.

According to the documentation and block diagram the first block
converts the input signal from linear or A-law or U-law to uniform PCM
signal. Then come the next steps of finding the difference signal,
etc..

I have written code to read in a .wav file one sample at a time(16
bit, sampled at 8000 Hz). That is, I read in 16 bits.

Then I want to give this as input to the G.723 codec. Can I do this?
Can I give the program a .wav (16 bit, sampled at 8000 Hz) input?
Do I have to modify it in any way before giving as input to this
program.

After doing the encoding and decoding, I again want to write the
output to .wav file. Can I do this?

Sorry, this might be too basic for some of you, but I am trying to
understand the working of this.

Hoping for a reply,
Thanks,
Still Learning.

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learningdsp wrote:

> Hello,
> I am a beginner and trying to understand the working of G.723 ADPCM.
<snip>

I already answered this exact post on comp.compression. Please learn to properly 
cross post.

-- 
Phil Frisbie, Jr.
Hawk Software
http://www.hawksoft.com

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Phil Frisbie, Jr. wrote:

> learningdsp wrote:
> 
>> Hello,
>> I am a beginner and trying to understand the working of G.723 ADPCM.
> 
> <snip>
> 
> I already answered this exact post on comp.compression. Please learn to 
> properly cross post.
> 
Phil,

Since I upgraded it, my browser doesn't mark as read separate instances
of properly cross-posted messages. (I lost some other nice fratures,
too.)

Jerry
-- 
Engineering is the art of making what you want from things you can get.
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

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Jerry Avins wrote:

> Phil Frisbie, Jr. wrote:
> 
>> learningdsp wrote:
>>
>>> Hello,
>>> I am a beginner and trying to understand the working of G.723 ADPCM.
>>
>> <snip>
>>
>> I already answered this exact post on comp.compression. Please learn 
>> to properly cross post.
>>
> Phil,
> 
> Since I upgraded it, my browser doesn't mark as read separate instances
> of properly cross-posted messages. (I lost some other nice fratures,
> too.)

I know what you mean. Are you using Netscape/Mozilla also? I hope they fix this 
in the next version.

> Jerry

-- 
Phil Frisbie, Jr.
Hawk Software
http://www.hawksoft.com

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