1. What is Bluetooth Audio Delay?

Bluetooth audio delay refers to the time lag between audio transmission and reception in wireless Bluetooth devices. This delay is crucial for audio-video synchronization and real-time audio applications.

2. How Does the Calculator Work?

The calculator uses the Bluetooth audio delay formula:

Where:

• \( \text{Latency Bluetooth} \) — Bluetooth transmission latency in milliseconds
• \( \text{Buffer Size} \) — Audio buffer size in samples

Explanation: The equation calculates the total audio delay by multiplying the inherent Bluetooth latency by the buffer size used in the audio processing pipeline.

3. Importance of Audio Delay Calculation

Details: Accurate delay calculation is essential for maintaining audio-video synchronization, reducing lip-sync issues, and optimizing performance in real-time audio applications like gaming and video conferencing.

4. Using the Calculator

Tips: Enter Bluetooth latency in milliseconds and buffer size in samples. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is typical Bluetooth latency?
A: Standard Bluetooth audio latency ranges from 100-200ms, while low-latency codecs like aptX LL can achieve 30-40ms.

Q2: How does buffer size affect audio delay?
A: Larger buffer sizes increase delay but provide more stable audio, while smaller buffers reduce delay but may cause audio glitches.

Q3: What is acceptable audio delay for video sync?
A: Generally, delays under 45ms are imperceptible, while delays over 100ms become noticeable as lip-sync issues.

Q4: Can Bluetooth version affect latency?
A: Yes, newer Bluetooth versions (5.0+) typically offer improved latency and better audio codec support compared to older versions.

Q5: How to reduce Bluetooth audio delay?
A: Use low-latency codecs, optimize buffer sizes, ensure strong signal connection, and use devices specifically designed for low-latency audio.