Project AURIONAI Use-Cases Research & Innovation
NVIDIA
speech recognition

QuartzNet

Compact convolutional CTC speech recognition model; QuartzNet 15x5 is also in the OpenVINO model zoo.

NVIDIANVIDIAUSA
Figure from the QuartzNet paper: QuartzNet BxR architecture.
Levelmodel
Classspeech recognition
Parametersnot in the notes
Contextnot in the notes
Released22 Oct 2019
Opennessopen weights permissive
Runs onnot in the notes
Statusactive

R&D Topics

Efficient acoustic encoder architectures for speech recognitionproduced by

Identity

Developer
NVIDIA
Family
not in the notes
Released
22 Oct 2019 sourcesannouncement page
Weights published
–
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
CNN 1D time-channel separable convolutions, CTC
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Note
QuartzNet 15x5 is the common English checkpoint.
Context length
not in the notes
Input
audio
Output
text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
open weights permissive
Licence
not in the notes sources
Access routes
open weights download
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. arxiv.org/abs/1910.10261 https://arxiv.org/abs/1910.10261
  2. github.com/openvinotoolkit/open_model_zoo/tree/master/mo... https://github.com/openvinotoolkit/open_model_zoo/tree/master/models/public/quartznet-15x5-en

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "QuartzNet", https://aurion.semai.id/models/nvidia-quartznet/, records of October 2026.