How to adjust the loudness (volume)

Important: The loudness parameter is only supported for bulbul:v2. It is not available for bulbul:v3.

The loudness parameter controls the volume level of the generated audio.

It is optional — if omitted, the default value 1.0 (normal loudness) is used.

Valid range: 0.1 (quietest) to 3.0 (loudest)
Values < 1.0 reduce volume; values > 1.0 increase volume.

Example Code

Rest API

Streaming API

1 from sarvamai import SarvamAI
2 from sarvamai.play import save
3 
4 # Initialize the REST client
5 client = SarvamAI(api_subscription_key="YOUR_SARVAM_API_KEY")
6 
7 # Generate speech using REST (loudness is only supported in bulbul:v2)
8 audio = client.text_to_speech.convert(
9     text="Welcome to Sarvam AI!",
10     model="bulbul:v2",
11     target_language_code="en-IN",
12     speaker="anushka",
13     loudness=2.0  # Increase loudness for a louder output
14 )
15 save(audio, "output1.wav")

1	from sarvamai import SarvamAI
2	from sarvamai.play import save
3
4	# Initialize the REST client
5	client = SarvamAI(api_subscription_key="YOUR_SARVAM_API_KEY")
6
7	# Generate speech using REST (loudness is only supported in bulbul:v2)
8	audio = client.text_to_speech.convert(
9	text="Welcome to Sarvam AI!",
10	model="bulbul:v2",
11	target_language_code="en-IN",
12	speaker="anushka",
13	loudness=2.0 # Increase loudness for a louder output
14	)
15	save(audio, "output1.wav")