Alex f99f8831a5 Add Nemotron 160ms and 80ms chunk size support (#490) ...

## Summary

- Add support for Nemotron streaming ASR with 160ms and 80ms chunk sizes
- Expose chunk size variants that were already available on HuggingFace
but not in the public API

## Changes

- **NemotronChunkSize**: Add `.ms160` and `.ms80` enum cases
- **ModelNames**: Add `nemotronStreaming160` and `nemotronStreaming80`
to `Repo` enum with correct subdirectory mappings
- **CLI Commands**: Update `NemotronTranscribe` and `NemotronBenchmark`
to accept 160 and 80ms options
- **Tests**: Update `NemotronChunkSizeTests` to verify all 4 chunk size
variants

## Available Chunk Sizes

| Chunk Size | Latency | Use Case |
|------------|---------|----------|
| 1120ms | 1.12s | Best accuracy & speed (original) |
| 560ms | 0.56s | Lower latency |
| 160ms | 0.16s | Very low latency |
| 80ms | 0.08s | Ultra low latency |

## Usage Examples

\`\`\`bash
# Transcribe with 160ms chunks
fluidaudio nemotron-transcribe --input audio.wav --chunk 160

# Benchmark with 80ms chunks
fluidaudio nemotron-benchmark --chunk 80 --max-files 50
\`\`\`

## Test Plan

- ✅ All `NemotronChunkSizeTests` pass
- ✅ Build completes successfully
- ✅ swift-format compliance verified
<!-- devin-review-badge-begin -->

---

<a href="https://app.devin.ai/review/fluidinference/fluidaudio/pull/490"
target="_blank">
  <picture>
<source media="(prefers-color-scheme: dark)"
srcset="https://static.devin.ai/assets/gh-open-in-devin-review-dark.svg?v=1">
<img
src="https://static.devin.ai/assets/gh-open-in-devin-review-light.svg?v=1"
alt="Open with Devin">
  </picture>
</a>
<!-- devin-review-badge-end -->

2026-04-06 23:06:14 -04:00

..

NemotronBenchmark.swift

Add Nemotron 160ms and 80ms chunk size support (#490)

2026-04-06 23:06:14 -04:00

NemotronTranscribe.swift

Add Nemotron 160ms and 80ms chunk size support (#490)

2026-04-06 23:06:14 -04:00

ParakeetEouCommand.swift

Reorganize ASR directory by model family and add StreamingAsrEngine protocol (#440)

2026-03-28 02:00:11 -04:00