Automatic cable equalizer for AES3

hwb · 3rd February 2006, 10:01 AM

Hi!

I want to improve the performance of an AES3 input by a cable equalizer. I have already worked with different kinds of EQ and had some good results. The problem is, that a permanent equalisation decreases signal quality due to overcompensation for short cable lengths. I have seen professional equipment with automatic or adaptive EQ, and I wonder how this works.
Any hints?

Holger

davidsrsb · 3rd February 2006, 11:53 AM

DSP I should think, it's quite hard to compensate for cable frequency attenuation with an electronic filter. How long are your cables?

hwb · 3rd February 2006, 12:24 PM

The device is used in mobile applications, therefore cable type and length are variable. I could use a manual switch for different equalizer characteristics, but preferably it should work autonomous.

I know that in telecommunication applications adaptive filters on DSP are used for equalisation and echo cancellation, but this would be overkill in my case.

rfbrw · 3rd February 2006, 01:55 PM

Embed the audio in a SMPTE259 datastream. Video transmission has built in cable equalisation.

3rd February 2006, 10:01 AM	#1
hwb diyAudio Member Join Date: Jan 2005	Automatic cable equalizer for AES3 Hi! I want to improve the performance of an AES3 input by a cable equalizer. I have already worked with different kinds of EQ and had some good results. The problem is, that a permanent equalisation decreases signal quality due to overcompensation for short cable lengths. I have seen professional equipment with automatic or adaptive EQ, and I wonder how this works. Any hints? Holger

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3rd February 2006, 11:53 AM	#2
davidsrsb diyAudio Member Join Date: Dec 2005 Location: Kuala Lumpur	DSP I should think, it's quite hard to compensate for cable frequency attenuation with an electronic filter. How long are your cables?

3rd February 2006, 12:24 PM	#3
hwb diyAudio Member Join Date: Jan 2005	The device is used in mobile applications, therefore cable type and length are variable. I could use a manual switch for different equalizer characteristics, but preferably it should work autonomous. I know that in telecommunication applications adaptive filters on DSP are used for equalisation and echo cancellation, but this would be overkill in my case.

3rd February 2006, 01:55 PM	#4
rfbrw diyAudio Member Join Date: Oct 2001 Location: .	Embed the audio in a SMPTE259 datastream. Video transmission has built in cable equalisation.

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