These settings affect stability and responsiveness more than basic musical quality for a beginner. A practical starting point is 44.1 or 48 kHz and a 64–128 sample buffer for live playing, increasing the buffer if clicks occur.
Buffer size determines how much audio the computer processes at one time. Sample rate determines how many samples represent each second of audio. Together they affect latency, processor load and project compatibility.
Buffer size
Measured in samples. Small buffers respond quickly but give the computer less time.
Sample rate
44.1 kHz and 48 kHz are common. All devices and apps should agree on the selected rate.
Latency relationship
At the same sample rate, fewer samples mean a shorter buffer time.
CPU load
Higher sample rate and complex effects require more calculations.
Mixing versus playing
Use a small buffer for performance and a larger buffer for heavy mixing when latency is less important.
Smaller buffers reduce delay but increase deadlines
With fewer samples in each block, the computer must complete processing more frequently. That feels more immediate but leaves less time for plugins and background work, increasing the chance of crackles.
Higher sample rates are not automatically better
They increase data and processor use and can reduce buffer time at the same sample count. Common rates such as 44.1 or 48 kHz are fully suitable for guitar recording and online audio.
Set up the signal path
- Start at 48 kHz.
- Try 128 samples.
- Lower to 64 for better feel if stable.
- Raise to 256 or 512 when projects become heavy.
- Choose one sample rate for the project and keep the interface, software and exported files consistent.
- Use a small stable buffer while monitoring live guitar, then increase it during mixing if the project becomes heavy.
When you hear noise, delay or no signal
Changing sample rate causes wrong speed or errors
The device, operating system and app disagree. Set the same rate everywhere.
The smallest buffer always crackles
Use the smallest stable value, not the smallest available number.
Playback speed or pitch is wrong
The device and project may disagree about sample rate. Set both to the same value and restart the audio engine if required.