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Loudness Normalization

A perfect loudness solution ready for OTT/music streaming.
Our technology reduces the loudness variance between sources to protect our users’ hearing.

Loudness Normalization 비주얼 이미지

Provide an optimal playback experience with consistant loudness.

Key Features

Unlike in typical file-based solutions, the metadata-driven “server-client ” architecture eliminates the need for additional transcoding.

You can set different target loudness for TV and mobile for one source saved in the server.

Mobile devices' inbuilt speakers have weak low-frequency response, resulting in very mild bass sound when music is played. We fixed this problem.

Distinct loudness modes are available based on the platform or service.

Reduce the loudness variance between sources
for a comfortable listening experience

LM1 is an international standard.

LM1 has been recongnized by Consumer Technology Association (CTA)
and American National Standards Institute (ANSI) as an international standard.
LM1 has been recongnized by
Consumer Technology Association (CTA)
and American National Standards Institute (ANSI)
as an international standard.

Your platform can be compatible with CTA-compliant smartphones, TVs, and cars, including iOS and Android, by applying LM1.

Your platform can be compatible with CTA-compliant smartphones, TVs, and cars, including iOS and Android, by applying LM1.

Loudness 이미지
Loudness 이미지

Our product lineup can meet your various needs and environment. Enjoy comfortable and safe hearing environment!

Our product lineup can meet your various needs and environment. Enjoy comfortable and safe hearing environment!

  • Loudness Server-Tools

    The solution transmits pre-normalized loudness
    for all contents from the server.

    The solution transmits pre-normalized
    loudness for all contents from the server.

  • Loudness Sever-Client

    The server generates metadata of measured loudness
    through the “server-client architecture”,
    and the client platform uses this metadata to normalize
    loudness to reach the contents’ target loudness.

    The server generates metadata of
    measured loudness through the
    “server-client architecture”,
    and the client platform uses this
    metadata to normalize loudness to reach
    the contents’ target loudness.

  • Loudness Stand-alone

    Loudness so lution for live streaming, live
    broadcasting, and hardware devices where
    metadata cannot be applied.

    Loudness solution for live streaming,
    live broadcasting, and hardware devices
    where metadata cannot be applied.

Our Partners

Gaudio Lab has provided solutions to these partners

Bugs 로고
Naver TV 로고
VIBE 로고
FLO

Related Content

Learn more about Gaudio Lab's solutions!

FAQ

Frequently Asked Questions about Gaudio Lab’s Solutions

  • LM1 can be used with any audio codec because it is an audio codec-independent metadata. For example, it can be used with MP3, AAC, FLAC, etc. that do not have separate loudness metadata.

  • The LM1 standard is designed to be an audio codec-agnostic form of extrinsic metadata that can be used in combination with a variety of audio codecs.

    As such, it can be delivered in a number of ways, depending on the streaming service's approach.

    It can be embedded in a container within the streaming content, or it can be passed as a base64 encoded string along with other metadata embedded in the content.

  • It is challenging to extract metadata in real-time with the LM1 in live broadcasting scenarios.

    In the LN SDK, there is a mode (LCO) that can handle loudness normalization without metadata, which is usually sufficient. However, there are some limitations in hitting the exact target loudness.

  • The server is only responsible for extracting and transmitting the LM1 metadata. Once the LM1 metadata is extracted for each sound source, no further processing for loudness leveling is required on the server.

    When playing the sound source, the client receives the LM1 metadata and uses it to process the loudness level in real-time.

  • The LM1 decoder includes a built-in DRC function, which enables comfortable loudness normalization with controlled dynamic range regardless of the listening environment, whether it's a noisy environment like a bus or subway, or when you need to listen quietly like in a quiet room.