Cross-Platform ACT File Viewer: Why FileViewPro Works
File extension .ACT refers to a low-bitrate digital voice-recorder format typically created by small portable MP3/voice devices to store quick voice reminders and simple recordings. Unlike high-quality music formats, ACT files typically pack the signal into a narrow-band, ADPCM-compressed stream optimized for intelligible voice, not rich, full-range sound. Because native ACT support is rare on …