AVR Core now supports the ability to add ambient background sounds to calls.
This feature allows you to simulate real-world environments (e.g., office, café, nature) or introduce controlled background noise during testing.
AVR includes a default set of pre-recorded sound files inside the ambient_sounds directory.
These files are already present if you clone avr-infra locally.
You can also provide your own files, as long as they follow the format:
office_background.raw – Subtle office environment sounds👉 You can find example files here: ambient_sounds/
You can generate your own files using SoX:
sox input_file.wav -r 8000 -c 1 -b 16 -e signed output_file.raw
Below is an example configuration with ambient noise enabled:
avr-core:
image: agentvoiceresponse/avr-core
platform: linux/x86_64
container_name: avr-core
restart: always
environment:
- PORT=5001
...
- AMBIENT_NOISE_FILE=ambient_sounds/office_background.raw
- AMBIENT_NOISE_LEVEL=0.90
volumes:
- ./ambient_sounds:/usr/src/app/ambient_sounds
ports:
- 5001:5001
networks:
- avr
| Variable | Description | Example Value |
|---|---|---|
| AMBIENT_NOISE_FILE | Path to the ambient sound file (inside container) | ambient_sounds/office_background.raw |
| AMBIENT_NOISE_LEVEL | Volume level for the background noise (0.0 = mute, 1.0 = 100% volume) | 0.10 (10%), 0.50 (50%), 0.90 (default 90%) |
volumes:
- ./ambient_sounds:/usr/src/app/ambient_sounds
With this feature, AVR can simulate more realistic environments and make your tests or demos closer to real-world conditions.