Meeting ACX Requirements w/ Audacity

Narrating and Producing Audiobooks.
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kozikowski
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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Sun Aug 24, 2014 7:47 pm

Yes, don't post anything to them until we settle on a protocol and effects values. Raw clips will never pass popping and noise. You'll have to be able to process work by yourself once we get one through the system. As above, some of the tools I used are brute force that happened to work in your particular instance, but may not be generally applicable.

Analyze > Audiobook Noise Floor and Effect > Equalization > LF Rolloff for Speech are custom designed tools and have to be hand-installed in Audacity.

I will post the recipe shortly.

Koz

The_zatanna
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Re: Meeting ACX Requirements w/ Audacity

Post by The_zatanna » Sun Aug 24, 2014 9:37 pm

Haha, my apologies! Although one day I can hope to narrate a comic (maybe?) this is a novel with graphic content ;)

Homemade recipes are my favorite!

kozikowski
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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Sun Aug 24, 2014 11:10 pm

The rule is five to one. So 15 minutes of finished, delivered show is good for an hour and a quarter to an hour and a half of work. You're not accustomed to the tools and shortcuts yet, so it's a bit longer. Also, we haven't applied the ACX Conformance tools yet.

"Alice slowly lay back in the warm, sweet-smelling hay, her heaving...."

I know it's common to think you can record a show, slap it on the fanny and go. I don't know that production has ever worked like that. You always want to correct your mistakes and polish the work.

Oh, wait. I can think of one violation of the 5:1 rule. I used to do this.

"We are live from the fourteenth street bridge where the Air Florida flight Palm 90 has plunged into the Potomac River. Rescue divers and emergency lighting....."

Koz

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Re: Meeting ACX Requirements w/ Audacity

Post by The_zatanna » Mon Aug 25, 2014 12:38 am

I had just deleted it once I realized that I hadn't connected a good 3-5 seconds of clips. UGHHHH, I'll post the new one here, that doesn't have that blank space I forgot to connect haha

I'm uploading it as an mp3 because apparently that's ACX standards?

I remember reading somewhere, maybe in this forum http://forum.audacityteam.org/viewtopic ... ng#p243573
that ACX requirements are a ball park and their really just looking for it to sound consistent, and not garbled. I'm not sure if that was ever confirmed, but nonetheless

THANK YOU AGAIN FOR YOU HELP! :P

https://drive.google.com/file/d/0B3HW7y ... sp=sharing

There's the file, with no weird gap, raw stuff, no recipes!

kozikowski
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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Mon Aug 25, 2014 2:54 am

I'm uploading it as an mp3 because apparently that's ACX standards?
True. That's ACX Final Deliverable Standards. However you can't Edit, Filter and Effect in MP3. That has to be done on the WAV or Project. You did keep a WAV or Project of the final before you made the MP3 right? ...... Right?

MP3 is a dead-end road. It's what you make when you're sure you will never have to do anything to the file ever again — except listen to it.

We have a number of things we need to do to it.

People who make podcasts from downloaded MP3s always complain that the Podcast MP3 is ratty and doesn't sound very good. That's correct. They have two MP3's worth of compression sound damage in the show and it's permanent.

Koz

kozikowski
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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Mon Aug 25, 2014 3:33 am

So we need a WAV or Project posted if I never got around to saying that.
Koz

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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Mon Aug 25, 2014 4:41 am

Where is "LF rolloff for speech?" Assume I want to hand someone a thumb drive with the filter on it.

Koz

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Re: Meeting ACX Requirements w/ Audacity

Post by steve » Mon Aug 25, 2014 9:00 am

kozikowski wrote:Where is "LF rolloff for speech?" Assume I want to hand someone a thumb drive with the filter on it.

Koz
Here: http://forum.audacityteam.org/viewtopic ... 81#p244881
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

kozikowski
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Re: Meeting ACX Requirements w/ Audacity

Post by kozikowski » Mon Aug 25, 2014 12:02 pm

Thank you.
I'm using your "filter list" for Ian as a base for corrections in this case, and maybe many other cases as well.

http://forum.audacityteam.org/viewtopic ... 20#p244941

The first mod is in step 2, Normalize to 0 and remove DC thereby solving a possible popping problem in step 3, LF rolloff.

An additional task is building tests into the list. Audiobook Noise Test, Analyze > Compare, etc. Finding and collecting all the bits and pieces has been quite a chore.

Koz

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Re: Meeting ACX Requirements w/ Audacity

Post by The_zatanna » Mon Aug 25, 2014 2:15 pm

Sorry I'm late,

I did save a WAV just in case! Hope you still need it!

https://drive.google.com/file/d/0B3HW7y ... sp=sharing

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