compressor of a speech signal

[crackintosh]

ne572 application

The circuit of the compressor of a speech signal for transiver is necessary.

 

[zorro]

ne572

Hi cr@ckintosh,

surely you are looking for a syllabic compressor/expander (not a digital coder).
If so, look for data sheets, application notes, etc of compandors (NE571, NE572 or others).
Regards

Z

 

[loki]

ne571 compressor circuit

More specifically, are you looking for

a-law, mu-law, adpcm, celp, etc?
Are your in/out signals in the digital or analog domain?

Loki.

 

[sda]

ne571 application note

Here's a link for a nice circuit
**broken link removed**
Or if you are looking for something simple and don't care much about the harmonic contents added (being for speech), try this one
http://www.geocities.com/ResearchTriangle/Lab/1635/circuits/circ05.html

Cheers
sda

 

[algilsan]

audio expander ne571

check audio codecs in internet