Interface PreprocessingConfig.AudioOrBuilder (0.16.0)

Enable boosting high frequency components. The default is false. Note: This field is not supported.

bool high_boost = 2;

Enable boosting low frequency components. The default is false. Note: This field is not supported.

bool low_boost = 3;

Specify audio loudness normalization in loudness units relative to full scale (LUFS). Enter a value between -24 and 0 (the default), where:

• -24 is the Advanced Television Systems Committee (ATSC A/85) standard
• -23 is the EU R128 broadcast standard
• -19 is the prior standard for online mono audio
• -18 is the ReplayGain standard
• -16 is the prior standard for stereo audio
• -14 is the new online audio standard recommended by Spotify, as well as Amazon Echo
• 0 disables normalization

double lufs = 1;