Bitrate Formula:
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Bitrate represents the amount of data processed per unit of time in audio recording. It's calculated from sample rate, bit depth, and number of channels, determining the quality and file size of digital audio.
The calculator uses the bitrate formula:
Where:
Explanation: Higher values for any of these parameters will increase the bitrate, resulting in higher quality audio but larger file sizes.
Details: Understanding bitrate helps in balancing audio quality with storage requirements and bandwidth limitations, especially important for streaming and professional audio production.
Tips: Enter sample rate in Hz (e.g., 44100), bit depth in bits (e.g., 16), and number of channels (1 for mono, 2 for stereo). All values must be positive numbers.
Q1: What are common sample rates?
A: Common rates include 44.1kHz (CD quality), 48kHz (professional audio), 96kHz (high-resolution), and 192kHz (ultra-high-resolution).
Q2: What bit depths are typically used?
A: 16-bit (CD quality), 24-bit (professional recording), and 32-bit (high-end audio processing).
Q3: How does bitrate affect file size?
A: Higher bitrate means larger files. For example, CD-quality stereo audio (44.1kHz, 16-bit, 2 channels) has a bitrate of 1,411.2 kbps.
Q4: What's the difference between bitrate and sample rate?
A: Sample rate is how often samples are taken, while bitrate is the total data flow combining sample rate, bit depth, and channels.
Q5: How does this relate to compressed formats like MP3?
A: MP3 uses lossy compression, so its bitrate is typically much lower than the uncompressed PCM bitrate calculated here.