Hard Audio Compression

I don't want to restart a discussion on the commercials being louder than t he show, it's all been done. They are upcompressed so even if they aren't t hey seem like it.

I am tired of fantastic dynamic range. My hearing is a bit off finally and I don't even want decent dynamic range. You could almost say I want NO dyna mic range. I know there is such a feature on alot of TVs now but I don't ha ve a TV. I watch whatever I watch on the internet. The sound goes from the computer to a stereo amp.

It's not just the middle of the night trying to hear whispers and then havi ng something blow up, it's just normal dialogue.

I want it so hard upcompressed it brings up the noise. Really, I will put u p with it. If you remember how old movies used to sound, when the film went real quiet and you heard the ALC bring up the noise ? Well I want it like that but with a much faster time constant. Much faster.

Does such a unit exist or will I have to build one ? I am not above that yo u know, but if I do I might want to knock heads with those around here fami liar with audio, I might need at least two bands, and I think there should be a user settable limit so it doesn't really get too out of hand.

The laptop I'm on right now has a compressor to keep the amp from clipping into the eentsy yittle speakers but all it does is to make music sound like shit. Really, like an AM radio. It really doesn't do what I want, but it's closer than alot of things I heard.

If there is a program that can do this in software that would suit me as we ll.

If I have to build it I think I got a pair of old ECG 829 which are MC 3340 . I am not that concerned with quality, don't need a delta gain stage, just the right equalization and limits etc. When I want quality I will bypass t he thing.

I know the MC3340 is not quite esoteric hifi to say the least, but the appl ication I was going to use it for was a dynamic power limiter, or anti-clip circuit in an audio amp where the design would have it out of circuit when inactive so its distortion would only be there when the amp would have bee n clipping anyway. It was going to partially bypass the main negative feedb ack but only when a comparator sensed major differences in the input and ou tput. Of course that feature was never installed which is why I still have the ICs after 20+ years.

Anyhoo, something off the shelf or even downloadable would be fine. If I ha ve to build something I'll burn that bridge when I come to it.

Reply to
jurb6006
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On a sunny day (Fri, 6 Sep 2013 22:43:42 -0700 (PDT)) it happened snipped-for-privacy@gmail.com wrote in :

The Philips Philips NE570 chip (if you can still get one ebay?) makes an excellent compander / expander (you want the compander). If you have the material on the PC as wave file for exmple, then you can use sox (Linux): sox example.wav example_companded.wav compand 0.003,.013.5 -80,-40,-60,-30,-40,-20,0,0 1

See my page at:

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Reply to
Jan Panteltje

Nice program there but will it run in Windows ? I have not yet graduated to Linux. Also I was thinking that my Mother for example could use something like this and she has a conventional TV. (CRT and all for now) I'll have t o look at the sheet on that chip.

You know if I could make the effect of this thing not too offensive there c ould be a smalll market for it. Not huge, but somewhat a market. I'm sure n ot to sell many to folks with a $50,000 home theater in a custom built room , but plenty of people might just like something like this.

Low tech folks, you know - who still have a cable box. Unfortunately I don' t see all that many TVs with a loop out/in these days like some bigscreens etc. used to have. Maybe I could make a few bucks installing such jacks on TVs.

If that proves impossible then plenty of people are getting those surround amps now so it could ho between the TV and that.

Reply to
jurb6006

Yep:

-- Jeff Liebermann snipped-for-privacy@cruzio.com

150 Felker St #D
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Santa Cruz CA 95060
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Skype: JeffLiebermann AE6KS 831-336-2558
Reply to
Jeff Liebermann

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