ghana-tts-36k β€” GGUF quantized variants

GGUF conversions of ghananlpcommunity/ghana-tts-36k for use with bluryar/VoxCPM.cpp.

The .gguf files are backend-agnostic β€” the same file runs on both a CPU-only and a CUDA build of the inference engine. Only the binary you compile differs between CPU and GPU deployment, not the weight file.

Files

File Quant AudioVAE Size Notes
ghana-tts-36k-f32.gguf F32 original largest Reference/max-accuracy baseline
ghana-tts-36k-f16.gguf F16 mixed
ghana-tts-36k-f16-audiovae-f16.gguf F16 f16
ghana-tts-36k-q8_0.gguf Q8_0 mixed Recommended for CPU
ghana-tts-36k-q8_0-audiovae-f16.gguf Q8_0 f16 Recommended for GPU (CUDA)
ghana-tts-36k-q4_k.gguf Q4_K mixed Smallest, more accuracy loss
ghana-tts-36k-q4_k-audiovae-f16.gguf Q4_K f16 smallest of the practical options Fastest CPU model-only RTF; good compact CUDA option too

Which one to use

Based on bluryar/VoxCPM.cpp's own published benchmarks on the same "voxcpm" architecture family (not run on this exact checkpoint β€” validate on your own audio before committing to one in production):

CPU inference:

  • Default pick: ghana-tts-36k-q8_0.gguf β€” best full-pipeline RTF at this model scale on CPU.
  • Smaller/faster, slight accuracy trade-off: ghana-tts-36k-q4_k-audiovae-f16.gguf.

GPU (CUDA) inference:

  • Default pick: ghana-tts-36k-q8_0-audiovae-f16.gguf β€” best full-pipeline RTF at this model scale on CUDA.
  • Smallest CUDA-friendly option: ghana-tts-36k-q4_k-audiovae-f16.gguf.

Inference

This repo includes two scripts that build and run VoxCPM.cpp against these weights:

  • infer_cpu.sh β€” builds a CPU-only voxcpm_tts and runs it against ghana-tts-36k-q8_0.gguf.
  • infer_gpu.sh β€” builds a CUDA-enabled voxcpm_tts (requires an NVIDIA GPU + CUDA toolkit) and runs it against ghana-tts-36k-q8_0-audiovae-f16.gguf.

Usage (either script):

bash infer_cpu.sh "Text to synthesize" prompt.wav "Exact transcript of prompt.wav" out.wav
bash infer_gpu.sh "Text to synthesize" prompt.wav "Exact transcript of prompt.wav" out.wav

Swap in a different .gguf from this repo by editing the MODEL_PATH variable at the top of either script.

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