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Open-weight model · Audio classification

wav2vec-vm-finetune

by Jake Downie jakeBland/wav2vec-vm-finetune

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m for voicemail detection. It is trained on a dataset of call recordings to distinguish between voicemail greetings and live human responses.

Parameters316M
Context
Weights1.3 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads24.9k

Runs On

What it takes to serve wav2vec-vm-finetune (316M parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 0.6 GB 0.8 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 0.3 GB 0.4 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 0.2 GB 0.2 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

Model Card

By Jake Downie, published under apache-2.0, revision 663b7dfbe8e0.

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m for voicemail detection. It is trained on a dataset of call recordings to distinguish between voicemail greetings and live human responses. This model builds on wav2vec2-xls-r-300m, a self-supervised speech model trained on large-scale multilingual data. We fine-tuned it on the first two seconds of a call. - Automated voicemail detection in AI-powered call assistants. - Filtering voicemail responses in customer service and sales call automation. - Only trianed on the English language. - Assumes the voicemail track is isolated and contains no audio from the caller. - Designed for the first two seconds of audio when calling a…

Read Jake Downie's full model card

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m for voicemail detection. It is trained on a dataset of call recordings to distinguish between voicemail greetings and live human responses.

Model description

This model builds on wav2vec2-xls-r-300m, a self-supervised speech model trained on large-scale multilingual data. We fine-tuned it on the first two seconds of a call.

Intended uses & limitations

  • Automated voicemail detection in AI-powered call assistants.
  • Filtering voicemail responses in customer service and sales call automation.

  • Only trianed on the English language.

  • Assumes the voicemail track is isolated and contains no audio from the caller.
  • Designed for the first two seconds of audio when calling a voicemail.

Training and evaluation data

The model was trained on a proprietary dataset of call recordings, labeled as: - Live human responses
- Voicemail greetings

The dataset includes diverse voicemail recordings across multiple types to improve generalization.

Evaluation metrics

The model achieved: - 98% accuracy on voicemail detection.

Training procedure

Training hyperparameters

The following hyperparameters were used during training: - learning_rate: 0.0003 - train_batch_size: 16 - eval_batch_size: 8 - seed: 42 - gradient_accumulation_steps: 2 - total_train_batch_size: 32 - optimizer: Use OptimizerNames.ADAMW_TORCH with betas=(0.9,0.999) and epsilon=1e-08 and optimizer_args=No additional optimizer arguments - lr_scheduler_type: linear - lr_scheduler_warmup_steps: 500 - num_epochs: 10 - mixed_precision_training: Native AMP

Framework versions

  • Transformers 4.48.2
  • Pytorch 2.5.1+cu124
  • Datasets 1.18.3
  • Tokenizers 0.21.0

Configuration

Architecture
Wav2Vec2ForSequenceClassification
Layers
24
Hidden size
1,024
Feed-forward size
4,096
Attention heads
16
Vocabulary size
32
Stored precision
float32
Model type
wav2vec2

Identity and Version

Repository
jakeBland/wav2vec-vm-finetune
Publisher
Jake Downie
Task
Audio classification
Modality
Audio
Library
transformers
Parameters
316M parameters
Languages
en
Revision
663b7dfbe8e08d615c6a83353a119e35d47903bd
First published
2025-02-09
Last updated
2025-02-16

Files and Weights

8 files, 1.3 GB in total. The weights are 2 files totalling 1.3 GB in bin, safetensors.

Weights2 files · 1.3 GB
Configuration2 files · 2.4 KB
Documentation1 file · 2.1 KB
Other2 files · 38.5 KB
Repository1 file · 1.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights1.3 GB 8cd1aa8a3a41
training_args.binWeights5.3 KB 83197abdac10
config.jsonConfiguration2.2 KB
preprocessor_config.jsonConfiguration214 B
README.mdDocumentation2.1 KB
runs/Feb09_20-59-53_78d6fe21dcab/events.out.tfevents.1739134797.78d6fe21dcab.1166.0Other6.5 KB 18150456c32b
runs/Feb09_21-00-18_78d6fe21dcab/events.out.tfevents.1739134821.78d6fe21dcab.1166.1Other32.0 KB 94d5a7d5f9ca
.gitattributesRepository1.5 KB

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
1.3 GB
Download from Jake Downie

Released by Jake Downie through its official repository on Hugging Face. Read the license.

Built From

  • Derived from facebook/wav2vec2-xls-r-300m

Memory Requirements

PrecisionWeights in memory
As published1.3 GB
16-bit0.6 GB
8-bit0.3 GB
4-bit0.2 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About wav2vec-vm-finetune

How much GPU memory does wav2vec-vm-finetune need?

About 0.8 GB at 16-bit and 0.2 GB at 4-bit: the weights (316M parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run wav2vec-vm-finetune on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use wav2vec-vm-finetune commercially?

Yes. wav2vec-vm-finetune is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

Similar Models

This model is a fine-tuned version of facebook/wav2vec2-xls-r-300m on Librispeech-clean-100 for gender recognition. It achieves the following results on the evaluation set: The Librispeech-clean-100 dataset was used to train the model, with 70% of the data used for training, 10% for validation, and 20% for testing. The following hyperparameters were used during training: - learningrate: 3e-05 - trainbatchsize: 4 - evalbatchsize: 4 - gradientaccumulationsteps: 4 - totaltrainbatchsize: 16 - lrschedulertype: linear - lrschedulerwarmupratio: 0.1 - numepochs: 1 - mixedprecisiontraining: Native AMP - Transformers 4.28.0 - Pytorch 2.0.0+cu118 - Tokenizers 0.13.3

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