Troubleshooting
Audio Latency Issues
Room correction adds some processing delay. While this is inaudible for music listening, it can cause issues with video playback or real-time applications.
Understanding Latency Sources
Total latency in Sounn comes from several sources:
| Source | Typical Latency | Adjustable? |
|---|---|---|
| Audio buffer | 5-20 ms | Yes |
| IIR filter | <1 ms | No (negligible) |
| FIR filter (short) | ~170 ms | Yes |
| FIR filter (medium) | ~340 ms | Yes |
| FIR filter (long) | ~680 ms | Yes |
FIR Latency is Intentional
Solutions by Use Case
For pure music listening, latency generally doesn't matter. You won't hear a half-second delay when pressing play.
Use the longest FIR filter your system supports for maximum bass correction. The latency is completely transparent during playback.
Checking Current Latency
Sounn displays current system latency in Settings > Audio:
- Buffer latency: From audio buffer settings
- Filter latency: From current filter settings
- Total latency: Combined processing delay
Adjusting Buffer Size
Smaller audio buffers reduce latency but increase CPU load and risk of dropouts:
- 64 samples: ~1.5ms at 48kHz, requires fast CPU
- 128 samples: ~3ms at 48kHz, good balance
- 256 samples: ~5ms at 48kHz, safe default
- 512 samples: ~10ms at 48kHz, very stable
If you experience audio dropouts or glitches, increase buffer size. If latency is critical and your system is stable, decrease it.