Audio Energy Calculation

The Audio Energy Calculation feature calculates the audio energy of the audio packets. In case of multi-channel audio packets, it calculates the average energy across the channels of the audio packet. The energy is calculated in decibels (dB).

This feature is available as Audio Energy Calculation codelet.

Parameter

Description

Type

channel_indices

List of indices of audio channels which are used for calculating the audio energy.

List of Ints

reference_energy

Energy (in dB) of the microphone’s max capture volume. This value can be obtained from the microphone specification sheet as Acoustic Overload Point or maximum dB. For example, the reference_energy of a ReSpeaker 4-mic array v2.0 is 120dB. Default is 0.

Float

Message

Proto Type

Name

Input

AudioDataProto

audio_packets

Output

AudioEnergyState

audio_energy

The calculated energy is available in Sight as average_energy_per_audio_packet.

The sound source localization sample application demonstrates this feature.

Platforms: Desktop, Jetson TX/2, Jetson Xavier, Jetson Nano

© Copyright 2018-2020, NVIDIA Corporation. Last updated on Feb 1, 2023.