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ChatterBlocker uses digital audio technology to mask the sound of speech and other distractions so you can stay focused.

ChatterBlocker does not use noise-cancellation. Instead, it masks unwanted conversations with a soothing blend of nature sounds, music and background chatter. The goal is to render speech less intelligible, because intelligible speech is often the most distracting sound in the workplace.

ChatterBlocker also offers mindfulness meditation tracks intended to increase concentration, reduce distractibility and minimize the stress response to office noise.

What's New

Version 1.0: Release notes were unavailable when this listing was updated.


Mac OS X 10.3.9 or later

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ChatterBlocker User Discussion

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Kantorde Member IconReview+24

This is the quintessential sound mask app for your working duties. Definitively worth the money. Highly recommended.

Reply0 replies
Version 1.0
Momijigari Member IconComment+32

The link to the developer is now:

And the current version number is 1.1.4, direct download link:

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Version 1.0
alas! Member IconReview+571

I work at home and do a lot of writing. My housemates consist of several sometimes noisy adults and a couple of rambunctious kids.
Chatterblocker allows me to maintain my sanity.
I've also got Sonic Mood which is designed more for setting a peaceful, tranquil environment rather than blocking noise.
Each has its own purpose and both work beautifully for their intended functions.
Chatterblocker uses about 18 or 19% CPU and Sonic Mood uses about 22% which my Macbook Pro w/4 Gigs of RAM can handle with applomb, including while using other apps with CB or SM running in the background. And both come with stellar support.
Both Chatterblocker and Sonic Mood have really enhanced the quality of my life.

Reply1 reply
Version 1.0

Should read 'aplomb' above....shame on me!

Lvdoc Member IconReview+534

Oh dear. I was a longtime fan of Sonic Mood. That is a very nice program with a lot of features, good customer support, and regular updates. I do recommend people look into it.

At the same time, I was immensely impressed by ChatterBlocker from the moment I started it up. Although SM is nice in the background, CB literally put me in a more tranquil mood almost immediately. I was highly skeptical before trying it, but as some other reviewers here have also pointed out, it has a nice user interface and good options to work with.

I bought a license this morning. The sounds and the ease of use were the selling points for me. I hate to knock it, but SM's instruction manual is very lengthy and almost menacing. CB is a lot more straightforward. I simply don't have either the time or inclination to wade through an instruction manual.

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Version 1.1.4
Zgibek Member IconReview+1

I've just tried the demo and it works.
I have to say that the background is nice and I really started to think why not to buy this.
But then I noticed that after selecting (mixing) two simple soundtracks and two or three effects this app takes more then 12 percent of my cpu. Choosing one soundtrack and one effect is ok, takes about 5-6%, but mixing more takes much more power of your cpu, 12, 15, 20, 25 and even more.
5%, or at least less then 10 is ok for me, but no more :(
That's why I'm giving only 3/5 in overall - I found it useful, but it eats too much my cpu

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Version 1.1.4
Jimge Member IconComment+24

I compared ChatterBlocker with SonicMood. Both are similar, yet offer different experiences. Under MUPromo, bith were the same price. I chose ChatterBlocker because it gave me a little more choice to single out the sounds I wanted, rather than a melange.

ChatterBlocker also allows the choice of combined sounds, maybe not quite the range, as well as instruments, and respective volumes for each.

Working in home office, I doubt I will use the voice chatter, but I can see how for corporate settings this would be good. I have to contend with 50,000 HP mach leaf blowers, and endless neighborhood barking that make me feel like I am living in a dog pound.

Uh-Oh - there goes another screaming leafblower. Time to scream out the window "Use a ***** rake!", or simply up the master volume on ChatterBlocker.

ChatterBlocker masks most of this and saves my sanity!

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Version 1.1.3
dlwhite Member IconComment+153

It helped me through 2 weeks on a critical project in a chatty office environment. It's surprisingly customizable, making it worth more than the standard NATURE SOUNDS CDs or other meditational music. I showed my wife, and she fell in love with the CONCENTRATION music setting coupled with the CYPRUS GOATS sound effect. There is a little something for everyone. I hope they continue to update the program with additional sounds. OR even if they offered an expansion pack of sounds to buy, that would be great! I've got it running right now: the Voice, Music, Nature Sounds 2 setting is the one that helps me through the day!

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Version 1.1.3
Jobby Member IconComment+41

Why does the installer need root privs? That seems to be overkill for a program that plays sounds...

Reply1 reply
Version 1.1.3
The Sound Guy, Inc. (Developer)

The installer we're using (Apple's PackageMaker) requires users to log in before installing the program in the Applications directory. I don't think there's anything unusual about this.

fonix Member IconReview+256

I use this software at the office and it is great for toning down noise from people talking, construction, and other distractions. The registered version has some extra goodies as well, like a few meditation tracks, which is nice.

I also like the Ocean Waves app listed on MU. For a simulation of waves, it's very effective.

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Version 1.1.3
Roadmouse Member IconReview+2

Love this little app. It's simple, but does the job. Creating relaxing background noise.
There was something similar called 'Forrest' years ago. But this is more stable, and has more features.

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Version 1.1
user icon+84
Version 1.1.4
user icon+0
Version 1.1.4
user icon+0
Version 1.1.4
> 4 9


Current Version (1.x)


Downloads 12,664
Version Downloads 5,509
License Demo
Date 19 Dec 2009
Platform OS X / PPC 32 / Intel 32
Price $19.95
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