starkdmi/MossFormer2_SR_48K_MLX

MossFormer2 SR 48K (MLX)

Audio super resolution, 16 kHz in to 48 kHz out. This model was converted to MLX format from alibabasglab/MossFormer2_SR_48K.

Code: starkdmi/mossformer_sr_mlx

Files

file	size
model_fp32.safetensors	418 MiB
model_int8.safetensors	293 MiB
config.json	392 B

config.json is required: this model builds its architecture from the file rather than hardcoding one, so a download without it cannot load.

Precision

precision	size	speed	peak memory	quality vs fp32
fp32	418 MiB	2.1x	4149 MiB	reference
int8	293 MiB	2.1x	3985 MiB	62.5 dB

Bold marks the best value in each column. Quality is int8 against this model's own fp32 output — the cost of the precision change, not a score for the model.

Integer quantization reaches only the Linear modules, and this model's Generator is almost entirely convolutions, so speed and memory are close to unchanged between the two. int8 trades 30% of the download for 62.5 dB.

Measured on an Apple M1 Pro (16 GB), 30 s of audio, three timed runs per configuration; speed is realtime factor. These are single-machine figures — expect different absolute numbers on other hardware, and treat the ordering as indicative rather than guaranteed.

Used by

AudioToolSwift