AI 服务暂时不可用，以下为来源正文，待恢复后补全翻译。
— FREQ 0.0 Hz −500+50 PIT VOL OUT Play the air. Right hand steers pitch across the field. Left hand rides the volume — lift to swell, drop to hush. No camera? The instrument follows your mouse, finger, or the music keyboard row instead. Camera frames stay on this device. Nothing is uploaded. Controls SpaceHold the note at full swell KMusic keyboard mode (A–; plays notes) MMute / unmute RRecord / stop CEnable camera LLatch — freeze the current volume FFullscreen the field [Octave down ]Octave up 1…6 load preset EscPanic — silence everything ?This card In music keyboard mode the letter shortcuts become notes; use the panel buttons instead. Termenvox · heterodyne scale