No toggling between volumes, just keep listening.

Gaudio Loudness Norm promotes a gapless and consistent listening experience when you play music, video, or even podcast.


Your platform hurts your listeners’ ears

”Hey, the volume difference episode to episode I move to the next video, the ads are so loud my ears hurt.”

“I can’t believe I pay for this service. The volume is ridiculously unstable. PLEASE deal with audio quality!”

”It’s hard to understand the episode because I can not hear the conversations.”

“The volume is lower than other apps. ”

“Okay..the ads are louder that the shows. Are you kidding?”

No one likes to toggling between volume levels when listening to music.
No one likes to offend their ears when a sudden ad blasts through earphones when watching videos.
This is all about the loudness problem.

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Why loudness normalization is essential for your platform

Loudness is the subjective “feeling” of how we perceive the strength of sound.
The variance in loudness creates a very inconsistent experience for the viewer or listener.

Unlike TV broadcasting there is no regulation for loudness normalization on OTT and Music Streaming services so each servcie platforms have different loudness.

As content produced for TV broadcasting are re-transmitted to mobile phones, the ‘Targeted loudness’ applied to these smartphones are unfit.

Not all content creators are audio experts, nor are experts at controlling the volumes with tools they use. 

Advertisers aim at even louder sound than the main programs to catch the interests of their viewers and listeners.

Make listening safe

Nothing should come between users and your content.
Start creating a balanced listening experience across your platform.
Our solution normalizes every content’s loudness and protects your ears from
sudden and unwanted loudness jumps that cause hearing loss.

Released Date: 2022-07-01

Choose the way to suit your needs

Loudness Server-Client (LNSC)

Enhance listening experience on your platform. A ‘server’ generates the metadata of the measured loudness, and the ‘client’s platform’ utilizes this metadata to normalize the loudness of the content in accordance with the target loudness.

Loudness Stand-alone (LNSA)

Enable automatic loudness control for smart device. It’s optimally designed to run on smartphone in the background and manage the loudness for any sounds blasting from any apps in smart way.

Loudness Server-Tools / File-based (LNST)

Transferring pre-consistent of loudness for all content on the server. It is almighty solution conveniently integrating into any workflow living in your server. It can serve as a companion tool for Gaudio Loudness Normalization Server-Client especially when your application should cover web client where no client SDK can place.

Key Features

International/national standards compliance

ITU-R 1770 loudness measurement,
EBU R-128 (Europe), ATSC A/85 (North America), TTAK.KO-07.0114 (Korea), ARIB TR-B32 (Japan), OP-59 (Australia), and more.

High Quality Sound

As signal processing is performed at the last stage of playback, any alteration and/or transcoding is avoided during content delivery. In addition, advanced metadata precisely controls the normalization gain to secure sound quality (“Quality Secure Mode”).

Wide normalization options

Gaudio provides diverse options depending on how you want your loudness normalization to be like, including Strict, Basic, Quality Secure, Transparent, Album, and Dialogue-gated.

Device-specific loudness control (DSLCTM)

Alteration of loudness originated from a connected transducer frequency response is further considered and compensated.

Very low-bitrate of metadata

Only less than 100 bytes per a program required.


As the loudness metadata is independently analyzed, transmitted, and decoded on top of any audio codec system, a platform doesn’t need to worry about the codec compatibility

Low complexity

With many-year experience as a seasoned audio SDK provider for mobile, it is designed to consume very low power as embedded in any client devices.

Complete SDK with easy integration

Intuitively designed API and accompanying target-dedicated example codes make integration simple and easy.

Customer oriented customization

Onsite & remote technical supports ensure complete integration.

Where to apply?

Wherever sound goes.
Our technologies can be built into a wide range of platforms and devices.

Media Platforms

Immersive sound quality for music, movie, broadcasting, sports live-streaming, and OTT.

  • Video Streaming(OTT), Music Streaming, Live Streaming, Broadcasting
  • e.g) Youtube, Spotify, Twitch, Sinclair
Hardware Devices

For built in-audio mode on
smartphones, tablets, laptops, TVs, earphones/headphones, speakers.


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