AI SFX Lab vs MMAudio

AI SFX Lab is a web tool for generating custom sound effects from text prompts. Users can set duration, ask for variations, choose loop behavior and style, and specify sounds the AI should avoid. A prompt enhancer can refine a description before generation. The maker says results may differ between generations and recommends previewing clips, changing settings, and trying again. The free plan costs nothing and provides 100 credits each month, with generations up to five seconds; it has no downloads or commercial use. Starter costs $4.90 a year, billed annually at $59/year, and includes 600 monthly credits. Creator costs $9.90 a year, billed annually at $119/year, with 2,000 credits and up to three simultaneous generations. Pro costs $24.90 a year, billed annually at $299/year, with 7,000 credits and up to five simultaneous generations. These paid plans support clips up to 22 seconds and downloads in WAV, MP3, and FLAC. Monthly credits do not roll over. Commercial use is restricted to paid plans and governed by the maker’s terms and policies, which prohibit deceptive audio, rights infringement, and misleading emergency sounds. The product is aimed at creators, game developers, editors, podcasters, streamers, marketers, Foley artists, and creative teams.

MMAudio generates audio from video or text, with a synchronization module that aligns generated sound to video frames. Its command-line demo and Gradio interface support video-to-audio and text-to-audio generation. The interface also has an experimental image-to-audio mode: the model was not trained for image input, and the demo turns a still image into a video for processing. The project is free, with repository code under the MIT license and pretrained checkpoints under CC-BY-NC 4.0. It runs on Linux or in a self-hosted setup. Installation calls for Python 3.9 or later and PyTorch 2.5.1 or later, with corresponding torchvision and torchaudio; the project says it has only been tested on Ubuntu. In the default large_44k_v2 configuration, inference in 16-bit mode uses around 6 GB of GPU memory. The demo saves audio as FLAC and video as MP4, with an eight-second default duration. Output may include unintelligible speech-like sounds or background music, and unfamiliar concepts can be difficult for the model.